ATM-TRK (Circuit Emulation Service Circuit Pack)
Issue 4 May 2002
10-227 555-233-123
ATM-TRK (Circuit Emulation Service
Circuit Pack)
This maintenance object explains how you test and repair TN230x ATM Interface
circuit packs (TN2305 and TN2306) that have been administered as virtual
ISDN-PRI trunks for ATM Circuit Emulation Service (CES). The maintenance
instructions for TN230x circuit packs that have been administered as Expansion
Interfaces for WAN connectivity are in the ATM-INTF (TN2305/6) maintenance
object.
Description
The TN2305 and TN2306 (Table 10-86 on page 10-227) are dual-purpose ATM
circuit packs that can be administered as either personality:
■ ‘‘ATM Circuit Emulation Service’’ or virtual ISDN-PRI signaling trunks.
■ Expansion Interfaces (ATM-EI) for Port Network Connectivity (ATM-PNC)
between the PPN and the EPNs.
Either circuit pack “personality” requires SONET OC-3 or SDH STM-1 fiber cable
connections between the circuit pack and the ATM switch. As a trunk board, it
supports direct connection between ATM CES circuit packs without an intervening
ATM switch.
NOTE:
TN230x circuit packs are not interchangeable.
MO Name (in
Alarm Log) Alarm Level
Initial Command to
Run
1
1 UU is the universal cabinet number (1 for PPN, 2 - 3 for EPNs). C is the carrier designation (A, B, C, D, or E). SS is the
number of the slot in which the circuit pack resides (01 to 21).
Full Name of MO
ATM-TRK MAJOR test board UUCSS ATM TRUNK (ATM Circuit Emulation Service)
ATM-TRK MINOR test board UUCSS ATM TRUNK (ATM Circuit Emulation Service)
ATM-TRK WARNING test board UUCSS ATM TRUNK (ATM Circuit Emulation Service)
Table 10-86. R7 ATM-TRK circuit packs
Circuit pack
Channel
types Interface Fiber
Echo
cancellation
TN2305 B and D
channels
24 or 32
channel
Multi mode Y
TN2306 B and D
channels
24 or 32
channel
Single mode Y
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