Yealink SIP-T27P [552/841] Procedure

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series IP Phones

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example, shared lines, call recording and MWI) offered by the working server. It is

not applicable to outbound proxy servers

 Successive registration: The IP phone only registers to one server at a time. The IP

phone first registers to the working server. In a failure situation, the IP phone

registers to the fallback server.

For more information on server redundancy, refer to

Server Redundancy on Yealink IP

Phones.

Procedure

Server redundancy can be configured using the configuration files or locally.

Configuration File

<MAC>.cfg

Configure the SIP server redundancy.

Parameters:

account.X.sip_server.Y.address

account.X.sip_server.Y.port

account.X.sip_server.Y.expires

account.X.sip_server.Y.retry_counts

Configure the outbound proxy server

redundancy.

Parameters:

account.X.outbound_proxy_enable

account.X.outbound_host

account.X.outbound_port

account.X.backup_outbound_host

account.X.backup_outbound_port

Fallback Mode:

account.X.fallback.redundancy_type

account.X.fallback.timeout

account.X.outbound_proxy_fallback_interval

Failover Mode:

account.X.sip_server.Y.failback_mode

account.X.sip_server.Y.failback_timeout

account.X.sip_server.Y.register_on_enable

Local

Web User

Interface

Configure the server redundancy on the IP

phone.

Navigate to:

http://<phoneIPAddress>/servlet?p=account

-register&q=load&acc=0