GAI-Tronics VoIP Telephone Software Configuration Guide - Manual (Page 19)

GAI-TRONICS
VoIP Telephone Configuration Guide Page 19 of 88
5.4 SIP settings
The SIP settings page is used to view or change parameters specific to the SIP signalling
protocol. GAI-Tronics VoIP phones can hold details of up to 4 SIP proxies. If the phone is
unable to register or make a call it can fail over to the next in a prioritised sequence. There is
a SIP Info page for each of the 4 possible endpoints, and a General SIP Info page containing
details common to all. The 4 endpoint pages are sub pages of the General page shown
below:
LOCALPORT: Configures the port number used for the local SIP signalling socket.
Default value: 5060
PROXYFAILOVERSTATUSES: This field contains a list of SIP error codes that will trigger a
fail over from one proxy to the next. Codes are 3 digits and the wildcard character “x” can be
used (ie 5xx would include any code from 500 to 599 inclusive). Codes are separated by
commas. Maximum field length 79 characters, ie 20 codes. The default list is 5xx, 6xx, 49x,
403, 406, 9xx. Codes are as defined in RFC3261 except 9xx, which is defined as "time-out"
and should always be included in the list.
Note that there are two failover mechanisms: one for proxies (defined here) and a second for
memories (defined in section 5.10.3). If a call fails due to a proxy error, the phone will then try
to place the call to the same number on the next proxy. If the call fails due to an endpoint
problem (for example "busy"), the phone will try the next number in the list, on the current
proxy.
DONTSTARTMEDIAATRING: This setting is not normally required. It can be used to delay
the sending of media packets to end points until the call has been answered. Only required if
problems are encountered with certain types of end point. Default value: OFF.
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