ZyXEL Communications IP PBX X6004 - Manual (Page 302)

Chapter 18 Outbound Line Group
X6004 User’s Guide
302
SIP Service
Domain Enter the SIP service domain name. In the full SIP URI, this is the part
after the @ symbol. You can use up to 127 printable ASCII Extended set
characters.
DTMF Mode Control how the X6004 handles the tones that the IP phones on your
network make when they push their buttons. One use of the tones is to
distinguish between numbers when trying to dial a PSTN phone
number. You should use the same mode as your trusted peer. The
choices are:
• rfc2833 - Follow the RFC 2833 standard and send the DTMF tones
in RTP packets.
• inband - Send the DTMF tones in the voice data stream. This works
best when you are using a codec that does not use compression (like
G.711). Codecs that use compression (like G.729) can distort the
tones.
• info - Send the DTMF tones in SIP messages.
Channel-limit Specify the maximum number of SIP calls (1~128) allowed to be made
through this trunk connection at one time.
Session Timer
Enable Session
Timer
Select this activate the X6004’s session timer. If you encounter
connectivity issues with your network or Internet, then it is suggested
that you use the session timer.
Minimum SE Enter the minimum session expiry time in seconds. The allowable range
is 90~1800 seconds.
When an incoming call requests a session expiry time that is lower than
this, the X6004 uses this value instead.
Session Expires Enter the session expiry time in seconds for all phone connections on
this trunk The allowable range is 90~86400 seconds. This value cannot
be lower than the Minimum SE.
This allows the X6004 to automatically disconnect any phone calls on
this trunk after a certain period of inactivity.
CallerID Setting
CallerID Viewer This field displays the caller ID format shown to the callees depending
on the setting you configure in the CallerID Name & Number and
The Extension Prefix fields.
Representative
Number Specify the representative number shown as source caller ID to the
callees when you make external calls through this trunk connection.
The default is “zyxel”.
Table 99 Trusted Peer Configuration (continued)
LABEL DESCRIPTION