DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-228ATM-TRK (Circuit Emulation Service Circuit Pack)
3
NOTE:
TN230x circuit packs are not int erchangeable.
ATM Circuit Emulation Service
Under ATM Circuit Emulation Service (CES), you simulate ISDN-PRI circuits by
assigning ports to

signaling groups

. Each signaling group represents a PRI
circuit, and the por ts in the group represent the D-cha nnel and B-channels of that
circuit. TN230x circuit p acks support up to 248 ports per c ircuit pack.
Virtual D-channels. Non-facility associated signaling is not supported under
ATM-CES, so you must reserve one port in each signaling group for use as a
D-channel (channel 24 when emulating a T-1 ISDN facility, channel 16 when
emulating an E-1 facility). The D-channel c an be any physical p ort from 9 to 32.
Virtual circuits. The TN230x can support a varied number of virtual circ uits,
depending o n the switch and the admi nistration of the circuit pac k. Table 3-96
lists the possibilities f or various DEFINITY models.
Table 3-95. 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 Sing le mo de Y
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Table 3-96. Circuit and channel capacities, for each DEFINITY model
Model Ports
Emulated
circuits
(signaling
groups) Channels/circuit
Virtua l
D-channels
Virtua l
B-channels
R6csi 248 1 to 8 24 (T1), 31 (E1) 1-8 6-240
R6si 248 1 to 8 24 (T1), 31 (E1) 1-8 6-240
R6r 248 1 to 8 24 (T1), 31 (E1) 1-8 6-240
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