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Nortel Modular Ics 6.1 Installer Guide

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P0603534  02Modular ICS 6.1 Installer Guide
MCDN trunk call features
The table below lists the MCDN features that are provided by 
an SL-1 link with MCDN active (the keycode is installed). The 
features affect call redirection and trunking functions, as 
shown in the table below.
To A:
Routing ServiceDestCode2
Normal rte001
Absorb0
To Public Network:
Routing ServiceRoute002
DialOutNo numbr
UsePool PRI-A
DN typePublic
DestCode9
Normal rte002
Absorb0
MCDN network...

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Network Call Redirection Information
NCRI builds on the following call features:
• External Call Forward
• Call Transfer
• Call Forward
NCRI adds the ability to redirect a call across an MCDN 
network using Call Forward (all calls, no answer, busy) and 
Call Transfer features. The call destination also receives the 
necessary redirection information. This feature allows the 
system to automatically redirect calls from...

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P0603534  02Modular ICS 6.1 Installer Guide
If you are using the centralized voice message system from a 
Meridian 1 system, you require the following programming on 
the M1:
M1 programming in LD 17
NASA set to Yes
NCRD set to Yes
Verifying NASA is Active
Overlay 22, LD 22
REQ: PRT
TYPE: ADAN DCH (slot number)
NASA should be set to yes
If NASA is 
not on:Disable the 
D channel
Overlay 
96, LD 
96
REQ: 
CHG
TYPE:DIS
DCHDisable the loop
Overlay 60, LD 60...

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ISDN Call Connection Limitation
The ICCL feature piggybacks on the call initiation request and 
acts as a check at transit PBX points to prevent misconfigured 
routes or calls with errors from blocking channels.
This feature adds a transit/tandem counter to a call setup 
message. This counter is compared at each transit PBX with a 
value programmed into the transit PBX, in a range from 0 to 
31. If the call setup counter...

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Call loop on system without ICCL
Meridian configurations:
The following settings are required on the Meridian system, 
using LD15:
•REQ = CHG
•TYPE = CDB
• Net_DATA=Yes
•CUST=0
• ISDN=Yes
•RCNT(5)
• PSTN=No
• TNDM=0-31(15)
• PCMC=0-31(15)
• SATD=0-5(1)
• Number plan CDP, UDP, and access code configured 
using LD 86, 87 and LD90
NorstarMeridian 1
Te l e p h o n e  A Norstar
Meridian 1
Norstar 

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Trunk Route Optimization
TRO finds the most direct route through the network to send a 
call between nodes. This function occurs during the initial 
alerting phase of a call.
Business Communications Manager configurations:
• Under Network Settings, MCDN, set TRO to Y(yes).
• Configure call routing for all optimal routes.
• Configure Call Forward (All Calls, No Answer, Busy) or 
Selective Line Redirection to use the...

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Call paths with and without TRO
If you are using a Meridian 1 system as part of the network, 
you need the following programming for each system:
Norstar configuration:
1. With the display showing System prgming press 
‘ until the display shows NetworkServices.
2. Press ≠ until MCDN displays.
3. Press ≠. NetwkICCL: displays.
4. Press ‘ until TRO:Y displays.
M1 TRO set to yes for Card1/Mod 1 
Norstar route:
LD 16
TYPE:...

Page 148

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5. Press CHANGE to choose either Y (yes) or N (no). 
Trunk Anti-tromboning
TAT is a call-reroute feature that works to find better routes 
during a transfer of an active call. This feature acts to prevent 
unnecessary tandeming and tromboning of trunks. This action 
occurs after the speech path has been established.
Note:  This feature is not applicable for alerting calls. 
This feature does not activate if TRO is set to...

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The diagram below shows how TAT reduces the line 
requirements. The solid line shows Telephone A calling 
Telephone B and being transferred over an additional PRI line 
to Telephone C. With TAT active, the same call is transferred 
to Telephone C over the same PRI line (the dashed-line).
Call paths with and without TAT
Norstar
Te l e p h o n e  A
Te l e p h o n e  B
Te l e p h o n e  C
For warded call (using TAT)...

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MCDN voice mail/auto attendant call features
Besides the general MCDN features described in MCDN trunk 
call features on page 141, an MCDN connection with a 
Meridian 1 with attached voice mail system, also provides 
some special call features.
Note:  Although these features have the same functions as 
Camp-on and Priority calls within each Norstar 
system, MCDN camp-on and break-in from M1 can 
access all network...
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