Avaya 1600 - Manual (Page 34)

Voice System Administration
34 Avaya one-X™ Deskphone Value Edition 1600 Series IP Telephones Administrator Guide Release 1.0
Note:
Note:
All local administrative procedures are on a phone-by-phone basis.
Administration using Communication Manager, DHCP, and HTTP applies to the
telephone system itself or to a range of telephones.
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 MSGNUM to any dialable string. An example is the
telephone number users would dial to access your voice mail system such as AUDIX or Octel.
For more information, see
Table 7 . When the user presses the Message button on the
telephone, that number is automatically dialed, giving the user one-touch access to voice mail.