NEC Univerge SV8100 VM8000 InMail System Manual page 120

Issue 1.0
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Operation
Operation is automatic once set up in programming.
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Program the Common Abbreviated Dialing bin for External Transfer.
13-04-01 Abbreviated Dialing Number and Name or Service Code #2
The bin should contain just the outside telephone number you want
External Transfer to dial.
Refer to the SV8100 Programming Manual for more.
No common Abbreviated Dialing numbers are stored by default.

Enable Loop Supervision for the trunks you are going to use for External
Transfer.
14-01-13 Basic Trunk Data Setup - Loop Supervision
Enter 1 to enable Trunk to Trunk Transfer for each trunk to be used for
External Transfer.
By default, this option is enabled for all trunks.

Enable Trunk-to-Trunk Transfer for all VM8000 InMail extensions.
20-11-14 Class of Service Options (Hold/Transfer Service) - Trunk-to-Trunk
Transfer
For each VM8000 InMail extension to be used for External Transfer, enter 0
to enable Trunk-to-Trunk Transfer. (Entering 1 disables Trunk-to-Trunk
Transfer).
By default, Trunk-to-Trunk Transfer is enabled (0) for all VM8000 InMail

extensions.
20-06-01 Class of Service for Extensions
Assign Class of Service to extensions (1~15).
VM8000
Features