Related links
on page 73
Administering NAT
Network Address Translation (NAT) usage can lead to problems that affect the consistency of
addressing throughout your network. All H.323 IP deskphones support NAT interworking. Support
for NAT does not imply support for Network Address Port Translation (NAPT). The phones do not
support communication to the PBX through any NAPT device.
NAT requires specific administration on the call server. A direct Avaya IP phone-to-Avaya IP
phone call with NAT requires Avaya Communication Manager Release 3.0 or later software. For
more information, see
Administration for Network Connectivity for Avaya Communication
Manager
Related links
on page 73
Administering Voice mail
Voice mail for deskphones with Communication Manager
When you press the
Messages
button, the deskphone first determines if the call server has a
dedicated number for retrieving voice mail. If a dedicated number exists, the deskphone proceeds
with voice mail retrieval.
Related links
Communication Manager Administration
on page 72
Voice mail for deskphones aliased as 4600 Series IP Telephones
When native support does not apply, IP deskphones are aliased as 4600 Series IP telephones and
run under CM Release 3.1 or later. In this case, use the settings file to configure the
Messages
button by setting the system parameter MSGNUM to any dialable string.
Some MSGNUM examples:
• A standard telephone number the telephone should dial to access your voice mail system,
such as AUDIX or Octel.
• A Feature Access Code (FAC) that allows users to transfer an active call directly to voice
mail. FACs are supported only for QSIG-integrated voice mail systems like AUDIX or Octel.
QSIG is an enhanced signaling system with which the voice mail system and Avaya
Communication Manager Automated Call Processing (ACP) exchange information.
When the user presses the
Messages
button, the deskphone automatically dials the number or
FAC, giving the user one-touch access to voice mail.
On the settings file, specify the number to be dialed automatically when the user presses this
button. The command is:
Communication Manager Administration
May 2018
Installing and Administering Avaya J169/J179 IP Phone H.323
75