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Operational, Basic, and Advanced Parameters
41-001343-02 REV04 – 05.2014 A-76
Parameter –
sip lineN backup registrar ip
(N is a line number from 1 to 9)
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description The address of the backup registrar (typically, the backup SIP proxy) for which the IP
phone uses to send REGISTER requests if the primary registrar is unavailable.
A global value of 0.0.0.0 disables backup registration. However, the phone is still active
and you can dial using username@ip address of the phone.
If the backup registrar IP address is set to 0.0.0.0 for a per-line basis (i.e, line 1, line 2, etc.),
then the backup register request is not sent, the "No Service" message does not display,
and the message waiting indicator (MWI) does not come on.
Format IP address or fully qualified Domain Name
Default Value 0.0.0.0
Range Not Applicable
Example sip line1 backup registrar ip: 192.168.0.102
Parameter –
sip lineN backup registrar port
(N is a line number from 1 to 9)
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description The backup registrar's (typically the backup SIP proxy) port number.
Format Integer
Default Value 0
Range Not Applicable
Example sip line1 backup registrar port: 5060
Parameter –
sip lineN registration period
(N is a line number from 1 to 9)
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description The requested registration period, in seconds, from the registrar.
Format Integer
Default Value 0
Range 0 to 2147483647
Example sip line1 registration period: 3600