Digium, Inc.
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Chapter 3: Telephone System Configuration
says you configure a single Polycom phone with two users. User 6000
with Line Number set to 1 and Line Key set to 2 will display user 6000
on line keys 1 and 2 on the phone. User 6001 with the same MAC,
Line Number set to 2, and Line Key set to 4 will display user 6001 on
line keys 3, 4, 5 and 6 on the phone.). Be sure not to select more line
keys than your phone supports.
SIP/IAX Password - The password used if the user has a SIP/IAX
account.
NAT - Try this setting when your Asterisk Appliance 50 is on a public
IP, communicating with devices behind a NAT device (broadband
router). If you have one-way audio problems, you usually have prob-
lems with your NAT configuration or your firewall's configuration of
SIP and RTP ports.
Can Reinvite - By default, the Asterisk Appliance 50 will route the
media streams from SIP endpoints through itself. Enabling this option
causes the Asterisk Appliance 50 to attempt to negotiate the endpoints
to route the media stream directly. It is not always possible for the
Asterisk Appliance 50 to negotiate endpoint-to-endpoint media rout-
ing. This option can be used to tell the Asterisk Appliance 50 whether
or not to issue a reinvite to the client.
DTMF Mode - Set the default DTMF mode for sending DTMF (touch
tone). The default setting is rfc2833. Other options include:
–
info - Used to display SIP Info messages
–
inband - Inband audio (requires 64 kbit codec - alaw, ulaw)
–
auto - Use rfc2833 if offered, inband otherwise.
Insecure - Insecure is a SIP parameter used to determine peer match-
ing. The setting determines whether or not an insecure connection will
be allowed, or if authentication is required. The valid options are:
