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ISL software implementation 289
Dedicated mode
The DCHI uses the NTAK02 circuit card and does not support ISDN PRI
signaling. The DCHI is reserved for ISL use only. The D-channel can
communicate with the far-end by means of a dedicated leased line modem
or dialup modem.
Note that the following implementation relates to analogue TIE trunks being
used as B-channels. In the case where DTI/PRI trunks are also used, then
LD 17 digital loop (2.0 Mb PRI) and LD73 (2.0 Mb PRI/SYTI) must also be
configured with the appropriate clocking and threshold settings.
For ISL dedicated mode using a dialup modem, a 500 set, TIE trunk
route and member must be programmed (used for D-channel). Table 106
"Configuring basic ISL capability" (page 289) summarizes the required
steps.
Table 106
Configuring basic ISL capability
Step
LD Action
117
Configure the D-channel for ISL use.
215
Enable ISDN option.
316
Enable the ISL option on a per route basis, assign a D-channel
for each route.
414
Assign a channel identification to each trunk with the ISL
option.
LD 17 - Configure the D-channel for ISL
Prompt Response Description
REQ CHG Change existing data
TYPE CFN Configuration data block.
ADAN NEW DCH 0-79 Add primary D-channel.
CTYP DCHI D-channel card type.
CDNO
0-15
1-9 11-19 21-29,
31-39 41-49
1-50
Serial Data Interface (SDI) Card number.
Number the SDI cards logically with the
system.
MSDL application small system Card
number
DCHI small system Card number
PORT
1
Must be set to 1.
Nortel Communication Server 1000
ISDN Primary Rate Interface Installation and Commissioning
NN43001-301 02.03 Standard
Release 5.5 7 December 2007
Copyright © 2003-2007, Nortel Networks
.