Yealink SIP-T21 E2 Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
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Configure the outbound proxy server redundancy.
Parameters:
account.X.outbound_proxy_enable
account.X.outbound_proxy.Y.address
account.X.outbound_proxy.Y.port
Fallback Mode
Parameters:
account.X.fallback.redundancy_type
account.X.fallback.timeout
account.X.outbound_proxy_fallback_interval
Failover Mode
Parameters:
account.X.sip_server.Y.register_on_enable
account.X.sip_server.Y.only_signal_with_registered
account.X.sip_server.Y.invite_retry_counts
account.X.sip_server.Y.failback_mode
account.X.sip_server.Y.failback_timeout
account.X.sip_server.Y.failback_subscribe.enable
Web User Interface
Configure the server redundancy on the IP phone.
Navigate to:
http://<phoneIPAddress>/servlet?p=account-
register&q=load&acc=0
Details of Configuration Parameters:
Parameters
Permitted Values
Default
account.X.sip_server.Y.address
(X ranges from 1 to 16, Y ranges from 1 to 2)
String within 256
characters
Blank
Description:
Configures the IP address or domain name of the SIP server Y that accepts registrations for
account X.
X ranges from 1 to 16 (for SIP-T54S/T48G/T48S/T46G/T46S/T29G)
X ranges from 1 to 12 (for SIP-T52S/T42G/T42S)
X ranges from 1 to 6 (for SIP-T41P/T41S/T27P/T27G)
X ranges from 1 to 3 (for SIP-T40P/T40G/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)

Yealink SIP-T21 E2 Specifications

General

Brand	Yealink
Model	SIP-T21 E2
Category	IP Phone
Language	English