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dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.7.2 Events descriptor | Table 9 Events settable on termination types and stream types: Yes If yes Event ID Termination type Stream type g/* ALL Not Applicable ocp/* ROOT Not Applicable nt/netfail nt/qualert ALL except ROOT RTP Not Applicable rtp/* RTP Not Applicable xdd/xce, dd/[d0-d9], dd/da, dd/db, dd/dc, dd/dd, dd/do, dd/ds ANALOG, ISDN (s... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.7.3 EventBuffer descriptor | Table 14 Event buffer descriptor used: No If yes Event IDs Not Applicable |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.7.4 Signals descriptor | Table 15 Signals settable dependant on termination or streams types: Yes If yes Signal ID Termination type Stream type/ID cg/* ALL except ROOT Not Applicable srvtn/* ALL except ROOT Not Applicable xcg/* ALL except ROOT Not Applicable andisp/* ANALOG Not Applicable an/* ALL except ROOT Not Applicable xal/* ANALOG Not Ap... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.7.5 DigitMap descriptor | Media GateWays (MGWs) conforming to this profile shall support at least one DigitMap. Table 23 DigitMaps supported: Yes If yes DigitMap name Structure Timers It is recommended that the default initial digit map (i.e. first digit map used for collecting dialled numbers from ordinary subscriber lines) be named InitDM0. N... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.7.6 Statistics descriptor | Table 24 Statistics supported on: Termination Table 25 Statistics supported on subtract: Yes If yes Statistic IDs reported Termination type Stream type nt/dur nt/os nt/or ALL RTP RTP Not Applicable rtp/* RTP amet/* ANALOG |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.7.7 ObservedEvents descriptor | When the event is provisioned in the media gateway, the Request Id is set to FFFFFFFF'H. Table 26 Event detection time supported: Yes ETSI ETSI TS 183 002 V3.3.1 (2009-08) 21 |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.7.8 Topology descriptor | Support of the topology descriptor is optional. Table 27 Allowed triples: ALL values defined in ITU-T Recommendation H.248.1 [15] Version 3 [i.3] shall be supported. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.7.9 Error descriptor | MGC supported: Table 28 Supported H.248.8 error codes: ALL Supported error codes defined in packages: All error codes defined in supported packages need to be supported. MG supported: Table 29 Supported H.248.8 error codes: ALL Supported error codes defined in packages: All error codes defined in supported packages nee... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.8 Command API | |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.8.1 Add | Table 30 Descriptors used by Add request: ALL except Mux Table 31 Descriptors used by Add reply: ALL except Mux |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.8.2 Modify | Table 32 Descriptors used by Modify request: ALL except Mux Table 33 Descriptors used by Modify reply: ALL except Mux ETSI ETSI TS 183 002 V3.3.1 (2009-08) 22 |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.8.3 Subtract | Table 34 Descriptors used by subtract: Audit Table 35 Descriptors used by subtract: Statistics |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.8.4 Move | Table 36 Move command used: Yes Table 37 Descriptors used by Move Request: ALL except Mux Descriptors used by Move Reply: ALL except Mux |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.8.5 AuditValue | Table 38 Audited properties: ALL properties in ALL descriptors Audited statistics: ALL Audited signals: ALL Audited events: ALL Package audit possible? YES |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.8.6 AuditCapabilities | Table 39 Audited properties: ALL properties in ALL descriptors Audited statistics: ALL Audited signals: ALL Audited events: ALL |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.8.7 ServiceChange | Table 40 MGC supported: ServiceChange methods supported: ServiceChange reasons supported: ALL 900 to 920 ETSI ETSI TS 183 002 V3.3.1 (2009-08) 23 Table 41 MG supported: ServiceChange methods supported: ServiceChange reasons supported: ALL 900 to 920 Table 42 ServiceChangeAddress used: No Table 43 ServiceChangeDelay use... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.8.8 Manipulating and auditing context attributes | Table 47 Context attributes manipulated: ALL supported attributes (see table 3) Context attributes audited: ALL supported attributes (see table 3) |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.9 Generic command syntax and encoding | Table 48 Supported encodings: Text encoding shall be supported by both the MG and the MGC. Both the long and short form of text encoding shall be supported at the receiving side. ETSI ETSI TS 183 002 V3.3.1 (2009-08) 24 |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.10 Transactions | Table 49 Maximum number of transaction requests/replies/TransResponseAcks/segment replies per message: 2 NOTE: When two elements are conveyed in one message, it is recommended that this message comprises a transaction request/transaction reply/transaction pending plus a transaction response ACK. Table 50 Segmentation s... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.11 Messages | It is recommended that MG and MGC names are in the form of fully qualified domain name. For example the domain name of the MGC may be of the form mgc1.whatever.net and the name of the MG may be of the form mg1.whatever.net. The fully qualified domain name will be used by the MG and MGC as part of the "Message Identifie... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.12 Transport | Table 55 Supported transports: Transport over UDP shall be supported. Support of SCTP is optional and shall conform to ITU-T Rec. H.248.4 [17]. Choosing one option or the other is a network operator's decision, based on the network configuration. For UDP transport the destination IP addresses to be used for delivering ... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.13 Security | Table 57 Supported security: For the purpose of the present document the control protocols are considered to be inside the secured zone of a single operator as shown in figure 1. The specified H.248 security options should not be used, as these interfaces are considered to be within a secured zone. In clause 7 of the p... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14 Packages | |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.1 Overview | Table 58 Mandatory packages Package name/reference PackageID Version Generic (ITU-T Rec. H.248.1 [15]) g 1 or 2 - Base Root (ITU-T Rec. H.248.1 [15]) root 2 Call Progress Tones Generator (ITU-T Rec. H.248.1 [15]) cg 1or 2 - Overload Control Package (ITU-T Rec. H.248.11 [19]) ocp 1 Network (ITU-T Rec. H.248.1 [15]) nt 1... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2 Package usage information | Table 61 Package usage information Package name Support of properties, parameters, signals, events, statistics, error codes Package usage/provisioned value Generic ALL Base Root ALL Call Progress Tones Generator ALL If used, the release tone shall be identical to the congestion tone. Levels, cadences and frequencies of... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.1 Generic (g) | Table 62: Generic package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: None - - - Signal Parameters Mandatory/ Optional Supported Values: Duration Provisioned Value: - - - - ETSI ETSI TS 183 002... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.2 Base root (root) | Table 63: Base root package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: Maximum Number of Contexts (root/maxNumberOfContexts) O AUDITVALUE ALL YES Maximum Terminations Per Context (root/maxTerminationsPerContext) O AUDITVALUE ALL YES Normal MG Execution Time (root/normalMGExecut... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.3 Call progress tones generator (cg) | Table 64: Call progress tones package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Dial Tone (cg/dt) M ADD, MODIFY Yes Signal Parameters Mandatory/ Optional Supported Values: Duration Provisione... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.4 Media GateWay (MGW) overload control (ocp) | Table 65: Media GateWay (MGW) Overload Control Package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: None - - - Signal Parameters Mandatory/ Optional Supported Values: Duration Provisioned Value:... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.5 Network (nt) | Table 66: Network Package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: Maximum Jitter Buffer (nt/jit) - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: None - - - Signal Parameters Mandatory/ Optional Supported Values: Duration Provisioned Value: - ... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.6 TDM circuit (tdmc) | Table 67: TDM Circuit package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: Echo Cancellation (tdmc/ec) M ADD, MODIFY ALL "True" (note) Gain Control (tdmc/gain) O ADD, MODIFY ALL - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: None - - - Signal Parameter... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.7 RTP (rtp) | Table 68: RTP Package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Events Mandatory/ Optional Used in command: Payload Transition (rtp/pltrans) O MODIFY, NOTIFY Event Parameters Mandatory/ Optional Supported Values: Provisioned Value: None - - - ObservedEvent Paramet... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.8 Extended DTMF detection (xdd) | Table 69: Extended DTMF Detection package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Provisioned Value: None - - - Signal Parameters Mandatory/ Optional Supported Values: Provisioned Value: - - - - Events Mandatory/ Opti... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.9 Basic services tones generator (srvtn) | Table 70: Basic Service Tones Generator package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Recall Dial Tone, srvtn/rdt M ADD, MOD, AUDIT VALUE Timeout Signal Parameters Mandatory/ Optional Sup... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.10 Expanded call progress tones generator (xcg) | Table 71: Expanded Call Progress Tones Generator package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Comfort Tone, xcg/cmft O ADD, MOD, AUDIT VALUE Timeout Signal Parameters Mandatory/ Optional... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.11 Enhanced alerting (alert) | Table 72: Enhanced Alerting package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Power Ring, alert/ri M ADD, MOD, AUDIT VALUE Timeout Signal Parameters Mandatory/ Optional Supported Values: Prov... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.12 Analog display signalling (andisp) | Table 73: Analogue Display package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Display with Alerting, andisp/dwa M ADD, MOD, AUDIT VALUE Brief Signal Parameters Mandatory/ Optional Supported Va... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.13 Generic announcement (an) | Table 74: Generic Announcement package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Fixed Announcement Play, an/apf M ADD, MOD, AUDIT VALUE Timeout Signal Parameters Mandatory/ Optional Supporte... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.14 Analog line supervision (al) | Table 75: Analogue Line Supervision package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Ring, al/ri M ADD, MOD. AUDIT VALUE Timepout Signal Parameters Mandatory/ Optional Supported Values: Prov... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.15 Extended analog line supervision (xal) | This package extends al. The additional parts are shown below. Table 76: Analogue Line Supervision package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Line Side Answer, xal/las M MOD. AUDIT VAL... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.16 Automatic metering (amet) | Table 77: Automatic Metering package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Enable Metering, amet/em M ADD, MOD. AUDIT VALUE On/Off Signal Parameters Mandatory/ Optional Supported Values: ... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.17 Intrusion tones generation (int) | Table 78: Intrusion Tones Generation package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Intrusion Pending Tone, int/pend M ADD, MOD, AUDIT VALUE Brief Signal Parameters Mandatory/ Optional Sup... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.18 Business tones generation (biztn) | Table 79: Business Tones Generation package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Off-Hook Queuing Tone, biztn/ofque M ADD, MOD, AUDIT VALUE Brief Signal Parameters Mandatory/ Optional Su... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.19 Differentiated Services (ds) | Table 80: Differentiated Services package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: ds/dscp M ADD, MODIFY ALL Not Applicable Signals Mandatory/ Optional Used in command: Duration Provisioned Value: None - - - Signal Parameters Mandatory/ Optional Supported Values: Duration Pro... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.20 Quality alert ceasing (qac) | Table 81: Quality Alert Ceasing package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: None - - - Signal Parameters Mandatory/ Optional Supported Values: Provisioned Value: - - - - Events Mandator... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.21 Inactivity timer (it) | Table 82: Inactivity Timer Package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: None - - - Signal Parameters Mandatory/ Optional Supported Values: Duration Provisioned Value: - - - - Events Mand... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.22 Call type discrimination (ctyp) | Table 83: Call Type Discrimination package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: Call Types, ctyp/calltyp O MOD, AUDIT VALUE - - Text Call Types, ctyp/ttyp O MOD, AUDIT VALUE - - Phase Reversal Detect, ctyp/V8bsup O MOD, AUDIT VALUE - - Probe Message, ctyp/probemsg O MOD, ... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.23 Stimulus analog line (stimal) | Table 84: Stimulus analog line package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Pulsed Signal (stimal/pulsedsig) M ADD, MODIFY, AUDIT VALUE Brief Signal Parameters Mandatory/ Optional Suppor... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.24 MGC information (MGCInfo) | Table 85: MGC Information Package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: Data Block (MGCInfo/db) M ADD, MODIFY, AUDITVALUE A range of 0 to 32 octets An empty string Signals Mandatory/ Optional Used in command: Duration Provisioned Value: None - - - Signal Parameters Mandato... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.25 Statistic Conditional Reporting (scr) | Table 86: Statistic Conditional Reporting Package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: None - - - Signal Parameters Mandatory/ Optional Supported Values: Duration Provisioned Value: - - ... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.26 ETSI Notification Rate Package (etsi_nr) | Table 87: ETSI Notification Rate Package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: Notification Rate (etsi_nr/notrat) M ADD, MODIFY, AUDITVALUE A range of 1 to 8 octets - Off-hook Notification (etsi_nr/offHookNot) M ADD, MODIFY, AUDITVALUE All YES Signals Mandatory/ Optional U... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.27 RTP Application Data Package (rtpad) | Table 88: RTP Application Data Package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: None - - - Signal Parameters Mandatory/ Optional Supported Values: Duration Provisioned Value: - - - - Events ... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.28 Keepalive Request (kar) | Table 89: Keepalive Request Package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Duration Provisioned Value: Send Keepalive Packet (kar/skap) M ADD, MODIFY NA Signal Parameters Mandatory/ Optional Supported Values: Provisi... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.14.2.29 Digit Dialling Method Information for Extended Digit Map Detection (xdmi) | Table 90: Digit Dialling Method Information for Extended Digit Map Detection package Properties Mandatory/ Optional Used in command: Supported Values: Provisioned Value: None - - - - Signals Mandatory/ Optional Used in command: Provisioned Value: None - - - Signal Parameters Mandatory/ Optional Supported Values: Provis... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 5.16 Procedures | Procedures for ephemeral H.248 terminations (here IP only) are described in clause 6. Procedures for physical H.248 terminations are described in clauses 7.2 and 7.3 providing the specifics of ANALOG and ISDN H.248 terminations respectively. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6 Procedures at the IP side | |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.1 General procedures | Media GateWays (MGWs) shall discard packets with RTP Payload Types (PT) that do not match the Local Descriptor contents. NOTE 1: Besides an incorrect RTP PT field might be also other reasons for discarding packets (invalid SSRC field, invalid CRC, etc.). NOTE 2: The MG has the option to collate statistics on discarded ... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.2 Voiceband Data (VBD) | |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.2.1 General | Voiceband data refers to traffic from facsimile/modem, data/modem or text/modem telephony applications. NOTE 1: The term "fax/modem" denotes traffic from so called Group 3 Fax Equipment (G3FE), which uses a suite of modem protocols for transport of image data and T.30/T.4 control data. There are also modem-less fax ter... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.2.2 Interworking between V.152-compliant GWs | A ARGW implementation according to this profile version provides a V.152-compliant GW function (see clause 6.2.1). For a connection between two such GWs, the media capability and bearer capability negotiation procedures are defined by ITU-T Recommendation V.152 [32]. As stated in ITU-T Recommendation V.152 [32], VBD ma... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.2.3 Interworking between V.152-compliant and non-V.152 GWs | This clause describes the inter-working between V.152 compliant and non-V152 compliant ARGWs. The essential difference between these ARGWs is in their support of a separate dynamic RTP payload for VBD handling (as described in ITU-T Recommendation V.152 [32]). All other aspects of VBD handling (e.g. silence suppression... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.2.4 VBD Transition - Change to G.711 Codec under MGC Control | This clause describes the transition from audio to VBD mode at a ARGW when the G.711 codec is not present n the H.248 Remote Descriptor and the current call scenario does not allow the use of a default VBD codec defined via the management plane (see clause 6.2.1). It is expected that this situation would occur for call... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.3 Support of ISDN unrestricted 64 kbit/s | When the MGC determines that a 64 kbit/s unrestricted bearer service is requested, the clearmode codec shall be used. A Dynamic Payload type with CLEARMODE as encoding name shall be included in both the local and remote descriptor. EXAMPLE: v= 0 c= IN <address type> <connection address> m= audio <port number> RTP/AVP 9... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.4 Comfort noise insertion and silence suppression | If a codec has built-in support for silence suppression and comfort noise insertion, the activation or deactivation of these features shall be indicated using the a= line according to RFC 3551 [35] and RFC 4855 [40]. If the selected codec does not have built in support for silence suppression and comfort noise (CN) ins... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.5 DTMF transmission | When a G.711 codec is used (see ITU-T Recommendation G.711 [27]), Media GateWays (MGWs) shall be able to generate, detect and forward DTMF tones inband. When other codecs are used, the MGC should request the use of the procedures defined in RFC 4733 [37] to send and receive DTMF tones: • If the Local Descriptor sent by... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.6 Call progress tones | Call progress tones shall be sent in-band using a voice codec. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.7 Support of G.711 variants | |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.7.1 G.711 encoding law | Media GateWays (MGWs) conforming to the present document are required to support ITU-T Recommendation G.711 [27] A-Law and may also support μ-Law in order to avoid call failure or transcoding in case the remote entity supports μ-Law only. How and where to perform transcoding in IP networks in case both terminals/gatewa... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.7.2 G.711 silence suppression mode | ITU-T Recommendation G.711 [27] -over-IP may be operated with or without silence suppression. In case of silence suppression, comfort noise generation shall be based on ITU-T Recommendation G.711 Appendix II [29]. These features may be enabled/disabled on a per session basis, using the procedure described in clause 6.4... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.7.3 G.711 packet loss concealment | ITU-T Recommendation G.711 [27] -over-IP may be operated with or without error loss concealment. Typically is that decision dependent on the IP packet loss rate conditions. ITU-T Recommendation G.711 [27] error loss concealment is based on RTP packet granularity, therefore called as packet loss concealment (PLC). ITU-T... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.8 MG-Internal redirection of RTP traffic | There might be situations where both RTP session endpoints will be located in the same media gateway (e.g. for a local call). This is related to the case where the two corresponding H.248 RTP terminations, of a single RTP session, belong to two different H.248 Contexts. If RTP traffic turnaround is not supported by the... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.9.1 Problem statement in general | This profile supports residential and access gateways (clause 4.1). The physical MG would be located as Residential Media Gateway (RMG) on customer premises, or as an Access Media Gateway (AMG) on public network side (see figure 1). The media traffic (e.g. RTP-over-IP) and signalling traffic (H.248-over-IP) is transpor... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 6.9.2 Problem statement for multiple IP realm network configurations | The different realm configuration is the general case for RGW deployments. Figure 3 illustrates a more detailed network model with a NAT/FW device located at the border between customer network and public network. The RMG is on customer side located, the controlling RMGC is located in the public network. The NAT functi... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7 Procedures for Physical H.248 terminations | |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.1 General procedures | |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.1.1 Initial configuration | A default digit map shall be provisioned in the MG, so that it can be referred to by name rather than by value. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.1.2 DTMF detection | When a series of digit maps is used during called party's number dialling, it is recommended that the values of the timers defined in ITU-T Recommendation H.248.1 [15] be set in such a way that the T timer of the subsequent digit maps be set the same value than the L timer. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.1.3 Sending of tones | Signals shall be sent to the exterior of the gateway, according to the following principles: • When sending a tone to the calling party from the originating MG, the signal shall be applied to the physical termination. • When sending a tone to the calling party from the terminating MG, the signal shall be applied to the... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.1.4 Sending of announcements | Residential Gateways are not required to store recorded announcements nor to support the generic announcement package. Access Gateways may be able to store recorded announcements and shall support the generic announcement package. However, Access Gateways are not required to support variable announcements. When the ann... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.1.5 Support of emergency calls | The MGC is responsible for detecting emergency calls and setting the Emergency Call context property when creating the associated context. Prior to the context being created the MG makes no assumption on the priority of the events that take place. The priority context property shall not be used for emergency calls. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.1.6 Echo control | Physical terminations are required to support echo cancellation. Echo cancellation is automatically activated on physical terminations by the MG and may be deactivated using the TDM Circuit package (see note 1). NOTE 1: H.248 TDM Circuit Package Version 1 (see ITU-T Recommendation H.248.1 [15], annex E.13) is providing... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.2 Specific procedures for analog lines | Example signalling flows for call-dependent procedures for analog line access are provided by TR 183 040 [i.2]. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.2.1 Autonomous actions | Normally the MG detects and applies analogue signals to the analogue line under the instructions of the MGC. However, a MG may be provisioned to perform the following time critical autonomous actions: • Apply normal power feed when the analogue line state changes from On-Hook to Off-Hook. • Apply idle voltage/current f... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.2.2 Alerting | The signal to be used (andisp/dwa or alert/ri) depends on whether or not information need to be displayed to the terminal. See also clause 7.2.4. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.2.3 Automatic metering | The pulses in the automatic metering package have to be accurately reflected between the MGC and the MG. In order to achieve that accuracy the following procedures have to be followed. The MG stops the enable metering signal from the automatic metering package in the event of an H.248 control link failure. The MGC is a... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.2.4 Display service | |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.2.4.1 On hook data transmission | If "data transmission during ringing or prior to ringing" as described in EN 300 659-1 [4] is required (e.g. for the calling number display service), then the MGC shall use the andisp/dwa signal without or with the "TAS" parameter. The andisp/dwa signal without "TAS" parameter is used when the default method (i.e. "dur... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.2.4.2 Off hook data transmission: | For Off-Hook display the procedures for shall conform to EN 300 659-2 [5]. If data transmission is invoked after the initial Call Waiting Tone "Subscriber Alert Signal" (e.g. for the calling number display service), then the MGC shall use the andisp/dwa signal without or with the "TAS" parameter. The former mechanism i... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3 Specific procedures for ISDN interfaces | |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3.1 General | Support of ISDN Basic Access, Primary Rate Access and NMDS requires the use of a backhaul mechanism in conjunction with H.248. In particular H.248 shall be used for handling the adaptation of the B channels to RTP media streams, for applying tones and announcements, and for inband DTMF digit collection. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3.2 ISDN-BA signalling | An AGW or RGW shall support ISDN Q.921 (see ITU-T Recommendation Q.921 [46] User Adaptation (IUA) over SCTP as a backhaul mechanism for transporting D-channel (s-type frames) information to the MGC. It is recommended that the IUA interface identifier (IID) is mapped from the H.248 termination ID. An AGW or RGW shall su... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3.2.1 Discrimination of s-type frames (layer 2 call control signalling) | The discrimination of s-type frames is based on a SAPI value equals to zero. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3.2.2 Discrimination of p-type frames | The Media GateWays (MGWs) shall evaluate the DLCI field. For the SAPI value equals to 16, the media gateway shall send the X.25 PLP messages over SCTP and IUA to the destination address, which is pre-provisioned for this SAPI value in the media gateway. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3.2.3 Discrimination of f-type frames | The Media GateWay (MGW) shall evaluate the DLCI field. For the SAPI value range for 32 to 62 inclusive, the Media Gateway (MG) shall send the X.35/X.31 messages over SCTP and IUA to the destination address, which is pre-provisioned for this SAPI-values in the media gateway. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3.2.4 SCTP Association establishment | The NGN-Packet Handler (NGN-PH) or Frame Handler (FH) plays the role of the Softswitch in a packet mode or frame mode configuration. Therefore, the SCTP association shall be established/re-established by the NGN PH or FH. For signalling (s-type frames) and packet/frame relay (f and p-type frames) two separate SCTP asso... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3.2.4.1 IUA/SCTP for Q.931 call control signalling traffic | The H.248 registration/re-registration between the Media GateWay (MGW) and the Media Gateway Controller (MGC) shall trigger the initiation of the SCTP association between the Media GateWay (MGW) and the Media Gateway Controller (MGC) according to TISPAN TS 102 144 [59]. The H.248 de-registration between the Media GateW... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3.2.4.2 IUA/SCTP for X.25 or frame relay traffic | IUA shall be used asymmetrical as specified in RFC 4233 [12]. The X.25 endpoint, i.e. the NGN-PH shall be a standalone node. It is not the aim of the present document to have two X.25 terminals interconnected via two Access Gateways and an IP domain, but a X.25 terminal connected via an Access Gateway to the NGN-PH. |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3.3 ISDN-PRA signalling | The RGW and AGW requirements for ISDN-PRA are the same as for an ISDN-BA line as detailed above, with the following exceptions: • "Point to point" procedures are only applicable. • Relaying of p-type and f-type frames is not applicable. Unlike ISDN-BA, any OAM procedures related to the access digital section (e.g. Loop... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3.4 NMDS | Where the AGW or RGW supports NMDS, there are specific behaviours for the ISDN Basic Access (BA) at both Layer 1 and Layer 2. At Layer 1 permanent activation shall be supported. At layer 2 the range of Automatic TEI values available to be requested by the Terminal Equipment (TE) and TEIs used for the signalling for PST... |
dde9e2552d661348f67d747426d8c5c3 | 183 002 | 7.3.5 ISDN management | The operation and maintenance of an ISDN-BA access digital section (as defined in ETS 300 297 [47]) and an ISDN-PRA access digital section (as defined in ETS 300 233 [48]) is performed by the MG. The MG controls the access digital section for the whole ISDN access and not individual "B" channels. Therefore the MG shall... |
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