Справочник Пользователя для Lucent Technologies Release 7
DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-148
ATM-BCH (ATM B-Channel Trunk)
9
ATM-BCH (ATM B-Channel Trunk)
This maintenance object explains how you test and repair TN230x ATM Interface
circuit packs (TN2305 and TN2306) that have ATM B-channel trunks
administered for ATM Circuit Emulation Service (CES).
circuit packs (TN2305 and TN2306) that have ATM B-channel trunks
administered for ATM Circuit Emulation Service (CES).
For maintenance instructions for TN230x circuit packs that are administered as
Expansion Interfaces for ATM network connectivity, see the
Expansion Interfaces for ATM network connectivity, see the
‘‘ATM-EI (Expansion
Interface Circuit Pack)’’
maintenance object.
ATM Circuit Emulation Service
Under ATM Circuit Emulation Service, you simulate ISDN-PRI circuits by
assigning ATM ports to
assigning ATM ports to
signaling groups. Each signaling group represents a PRI
circuit, and the ports in the group represent the D-channel and B-channels of that
circuit. B-channels must also be assigned to ISDN-PRI trunk groups. TN230x
circuit packs support up to 248 ports per circuit pack.
circuit. B-channels must also be assigned to ISDN-PRI trunk groups. TN230x
circuit packs support up to 248 ports per circuit pack.
Signaling group components
Bearer (B) channels (ATM-BCH) transmit digitized voice or data, while a separate
D-channel (ATM-DCH) handles call-control signaling. One D-channel handles
signaling for a group of B-channels that combine to form a signaling group
(ATM-SGRP).
D-channel (ATM-DCH) handles call-control signaling. One D-channel handles
signaling for a group of B-channels that combine to form a signaling group
(ATM-SGRP).
B-channel service states
MO Name (in
Alarm Log)
Alarm Level
Initial Command to
Run
1
1.
UU is the universal cabinet number (1 for PPN, 2-44 for EPNs). C is the carrier designation (A, B,
C, D, or E). SS is the number of the slot where the circuit pack resides (01-21). ppp is the 3-digit
port number (9-256).
C, D, or E). SS is the number of the slot where the circuit pack resides (01-21). ppp is the 3-digit
port number (9-256).
Full Name of MO
ATM-BCH
2
2.
‘‘ATM-DCH (ATM D-Channel Port)’’
Signaling Group)’’
and PKT-BUS.
MAJOR
3
3.
A MAJOR alarm on a trunk means that alarms on these trunks are not downgraded by the set
options command, and at least 75% of the trunks in this trunk group are alarmed.
options command, and at least 75% of the trunks in this trunk group are alarmed.
test port UUCSSppp l
ATM B-Channel Trunk
ATM-BCH
MINOR
test port UUCSSppp l
ATM B-Channel Trunk
ATM-BCH
WARNING
test port UUCSSppp sh
ATM B-Channel Trunk