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The following are other carrier options that may be specified. Defaults are in
parentheses.
Changing attributes
The DS-1 attributes for a given carrier are changed as follows:
PRI facility-related tables
Facility-related tables describe the characteristics of the PRI hardware
interface and B-channel allocation. These parameters are datafilled in tables
TRKGRP, TRKSGRP, and TRKMEM.
bit error ratio base—bipolar violations (BPV) or CRC; CRC is only
available with ESF framing.
data link (NILDL)
inhibit alarm transmit (N)
local carrier group alarm set threshold (250) specified in units of 10 ms
local carrier group alarm clear threshold (1000) specified in units of 10
ms
remote carrier group alarm set threshold (50) specified in units of 10 ms
remote carrier group alarm clear threshold (50) specified in units of 10
ms
alarm indication signal set threshold (150) specified in units of 10 ms
alarm indication signal clear threshold (1000) specified in units of 10 ms
bit error rate maintenance limit threshold expressed as a negative
exponent of 10 (6 –> 10
bit error rate out-of-service limit threshold expressed as a negative
exponent of 10 (3 –> 10
errored second limit (864)
severe errored second limit (100)
Ensure the associated carriers are either manual busy (MANB) or offline
(OFFL).
Create a new tuple, if necessary, in Table CARRMTC, with the required
attributes. Usually it is recommended that you copy an existing tuple and
change only the fields you want to modify.
In the P-side inventory Table LTCPSINV, assign the new tuple to the
desired DS-1 carriers.
Busy and return the carrier to service.
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
Datafill and subscription parameters 9-13
–6
)
–3
)
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