Nortel Communication Server 1000S Installation And Configuration Manual page 319

LD 73 — Defining the 2.0 Mb DTI timers (Part 2 of 2)
Prompt Response
N
P METR(R) abcd
N
EDGE 0
1
TIME 40-(240)-480
SASU 0-(1920)-8064
MFAO YES (NO)
<CR>
SZNI YES (NO)
MFF CRC
(AFF)
Description
If DIGT(S) signal not required
Metering (receive). Bits P, X or U. Only two P bits allowed.
COT and DID trunks only.
Note: PPM package must be enabled.
If METR(R) signal not required
PPM bit counted when changed from 1 to 0.
PPM bit counted when changed from 0 to 1.
Maximum time METR signal is in milliseconds.
Seize acknowledge supervision period in milliseconds.
2.0 Mb DTI default = 1920
DTI card will or will not set bit 3 of timeslot 0 if loss of
Multiframe Alignment Signal (MFAS) occurs.
2.0 Mb DTI default = NO
<cr> = no change is required
PSTN incoming seizure during lockout of MFAS and far-end
fault states allowed (denied)
Multiframe format - Cyclic Redundancy Check (CRC 4)
Alternative Frame Format
Note: Prompted for Small Systems and CS 1000S only.
The following prompts and associated responses define the grade of service
timers for the DTI card. Group I problems are treated individually. They are
bipolar violations, bit error rate (frame alignment) slips, and CRC-4 errors.
Group II problems are treated as a group. They are bit 3 of TS0 (far-end out
of service), bit 6 of TS16 (far-end lost multiframe alignment), AIS (alarm
indication signal), loss of frame alignment, and loss of multiframe alignment.
ISDN Primary Rate Interface
2.0 Mb DTI implementation
Installation and Configuration
Page 319 of 394