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Dataset card Data Studio Files
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include the number of calls to billings that are offered to the system but are
delayed or lost because of marginal or faulty equipment.
Hardware Measurements are an indication of the condition of the system
hardware which is described in terms of the number of errors, trouble
indications, and out of service intervals. These measurements may not reflect
customers directly, but do indicate how well the system is functioning.
Base Measurements that are provided are counts of the total calls carried
by the system broken into various categories. These counts are necessary to
normalize service counts and performance counts of mechanical units if
comparisons are to be made of offices with dissimilar traffic characteristics.
Daily PM01 Output Message
=========================
The daily Plant Measurement data in the PM01 output message is organized
as follows:
o Base Measurements
o Selected Customer Service Measurements
o Maintenance Measurements including emergency action
(EA), maintenance interrupts, and network failures
o Performance measurements of system hardware including
the central processor and bus system
o Coded enable peripheral units, peripheral units, and
trunk and service circuits.
o Time-Out totals
o Attached processor measurements
o Circuit Switch Digital Capability measurements
o Improved Public Telephone Service measurements
o Remote Switch System measurements
===================
=Base Measurements=
===================
The base measurements provided by the PPMP1A00 are needed to normalize
the service counts and performance counts of units whose uses vary with the
traffic load. By using these counts, meaningful comparisons can be made with
past performance and with the performance of offices with dissimilar traffic
characteristics. The counts are taken in terms of carried load (excluding all
traffic overflow).
The BASE MEASUREMENTS are as follows, with the printout in parenthesis:
1. Originate Calls (ORIG CALLS): Counts the number customer receiver seizures
for which at least 1 digit is received. The count includes partial dials
(but not permanent signals) as well as additional partied added to a
conference circuit. The PPMP1A00 obtains this from the traffic measurements
program.
2. Incoming Calls (INC CALLS): Counts the number of calls originating from
trunks incoming from distant locations that seize an incoming register (and
in the case of a by-link, receive one digit). The PPMP1A00 obtains this
count directly from the traffic measurements program.
3. Outgoing Calls (OUTG CALLS): Counts the number of calls for which
outpulsing is required and a transmitter is successfully seized.
4. Coin Control Seizures (COIN CONTR SEIZ): Counts the number of times the
coin control circuit is successfully connected to a coin line. This count
will exceed coin line originations as the coin control circuit may be
seized more than once during a call.
5. CAMA Seizures (CAMA SEIZ): Counts then number of times an incoming CAMA
trunk (operator or ANI) is seized.
6. AMA Entries (AMA ENTRIES): Counts the number of billing entries put on AMA
tape.
7. Automatic ID. Outward Dialing Seizures (AIOD SEIZ): Counts the number of
successful connections to an AIOD receiver.
8. Centrex Data Link Seizures (CTX DL SEIZ): Counts the number of connections
to a centrex DL for transmission or reception of lamp and key orders. This
is NOT a count of centrex calls.
9. Output Message Register (OMR SEIZ): Counts the number of seizure output
message registers.
======================
=Service Measurements=
======================
The service measurements give valid indications of the level of customer
service. A count of the calls lost by the system, as a result of hardware
malfunctions, is a significant measure of the influence of the condition of
the central office hardware on customer service. The following service
measurements are provided.
1. Hardware Lost Calls (HWR LOST CALLS): Counts the number of calls dropped
when a trunk is suspected and is placed on the trunk maintenance list (TML)
for diagnosis or when a network failure has occurred on the call.
2. Hardware Lost Billing (HWR LOST BILLING): Counts the number of calls not
billed because both AMAs are out of service (local, long distance, and
special service calls are allowed to proceed without billing).