Nat; Diffserv; Voice Mail Integration; Call Transfer Considerations - Avaya 1600 Series Administrator's Manual

Communication Manager Administration

NAT

Network Address Translation (NAT) usage can lead to problems that affect the consistency of
addressing throughout your network. All H.323 IP Telephones support NAT interworking.
Support for NAT does not imply support for Network Address Port Translation (NAPT). The
telephones do not support communication to the PBX through any NAPT device.
NAT requires specific administration on the media server. A direct Avaya IP Telephone-to-Avaya
IP Telephone call with NAT requires Avaya Communication Manager Release 3.0 or greater
software. For more information, see Administration for Network Connectivity for Avaya
Communication Manager (Document Number 555-233-504) on the Avaya support Web site.

DIFFSERV

The DiffServ values change to the values administered on the media server as soon as the
telephone registers. For more information, see Chapter 4 "Network Quality Administration" in
Administration for Network Connectivity for Avaya Communication Manager (Document
Number 555-233-504). Unless there is a specific need in your enterprise LAN, Avaya
recommends that you do not change the default values.

Voice Mail Integration

You can set the system parameter
telephone number users would dial to access your voice mail system such as AUDIX or Octel.
For more information, see
telephone, that number is automatically dialed, giving the user one-touch access to voice mail.

Call Transfer Considerations

This section provides information about call transfer behaviors to consider when administering
the call server. The telephone application presents a user interface, based in part on the
deduction of the call state. But, as the administrator, be aware that the following server-based
features can interact with the user interface resulting in a call state that might need explanation:
When the system parameter Abort Transfer? is set to Yes, once a transfer has been
●
started the user cannot press a non-idle call appearance until the transfer is complete or
the transfer is aborted.
34 1600 Series IP Telephone Administrator Guide Release 1.0
MSGNUM to any dialable string. An example is the
Table 7. When the user presses the Message button on the