Nortel Networks 1000M - Manual (Page 313)

Configuring for Survivability 313
—End—
Advantages:
• Users can make outgoing calls at any time.
• Users can still access their mailboxes in survival mode if the Mail
intercept feature is configured.
• The outgoing DOD trunks are used in both normal and survival modes.
• Users with DID numbers have direct inward access in both normal and
survival modes.
Disadvantages:
• Non-DID users of the Expansion Cabinets or Chassis cannot directly
receive incoming calls in survival mode.
• The customer must purchase enough DID/DOD trunks to handle entire
outgoing call volume in survival mode.
Option 2: Outgoing-only, analog CO trunks
Procedure 57
Configuring analog CO trunks for Survivability
Step Action
1 Configure each IP Expansion Cabinet or Chassis with some
outgoing-only, analog CO trunks.
2 Configure the Main Cabinet or Chassis with incoming and outgoing
CO trunks to handle most external calls.
The operation is similar to Option 1 except that there are no inward
DID capabilities. The Mail intercept feature can again be used in
survival mode to allow incoming calls to be directed to the called
person’s voicemail.
—End—
Advantages:
• Users can make outgoing calls at any time.
• Users can still access their mailboxes in survival mode if the Mail
intercept feature is configured.
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Small System Installation and Commissioning
NN43011-310 01.04 Standard
Release 5.0 13 May 2008
Copyright © 2008, Nortel Networks
.