Web Interface
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41-001516-00 REV00 – 06.2013
The table below describes the SIP Registration settings. Different SIP Call Server providers might use different names in
their setup. The descriptions below will help you in mapping the S850i fields to your SIP Call Server fields.
SIP Registration
Registrar
This is the IP address or DNS name of the SIP registrar server.
Backup Registrar
This field can hold the IP address of a failover SIP registrar, it should be configured with the failover or secondary SIP reg-
istrar IP address or domain name if applicable. If no failover or secondary SIP registrar is present in the VoIP infrastruc-
ture, this field should be left blank.
When this field is specified, the phone will register with the primary SIP registrar (The “Registrar” field) if it is accessible.
If the primary SIP registrar becomes inaccessible via UDP or TCP, the phone will attempt to register with the backup reg-
istrar. If the phone successfully registered with backup registrar, it will switch to the backup registrar to perform outgo-
ing calls and receive incoming calls. While the phone is registered with the backup registrar, it will monitor the primary
SIP registrar connection. Once the primary SIP registrar becomes available again, the phone will roll back to register
with the primary registrar and route SIP traffic from/to the primary registrar.
Use Proxy for Registration
Use this option to indicate whether or not the SIP proxy server(s) specified in the Outbound Proxy field should be used
when registering. Select “Use Outbound Proxy” to have the system add listed proxy servers to the route headers of the
SIP REGISTER request.
Outbound Proxy
Enter the outbound SIP proxy server’s IP address or name in the Outbound Proxy field. If there are multiple SIP proxies,
separate the addresses by a comma. Also note that on the SIP Settings page there’s an option to allow strict routing. If
that option is set and you have a SIP proxy that is configured for loose routing, add the “;lr” designation after the proxy’s
address, for example, “10.134.129.101;lr”.
ID
ID is the phone’s SIP ID used for SIP registration. If this field is left blank, the Username field will be used as the ID.
Display Name
Display Name is the string that is shown at the far side when you make outbound calls. If you do not provide a Display
Name, the Username will be used. Please note that your SIP Call Server might override the Display name sent by the
S850i and replace it with names configured in the SIP Call Server.
Username
This is the username for the account used to authentication with the SIP registrar and proxies.
Password
This is the password for the account used to authenticate with the SIP registrar and proxies.
Registration Timeout
Registration Timeout is the optional timeout for SIP account registration, in seconds. The default is 55. If set to 0, the
default will be used.
Auto Re-registration Retry
Interval
If SIP registration is unsuccessful, this field specified the time duration between retry attempts, in seconds. The default
is 300 seconds (5 minutes).
