Yealink T21PE2 User Manual

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
208
Default 120
Parameter
account.X.outbound_proxy_fallback_interval
[1]
<MAC>.cfg
Description
It configures the time interval (in seconds) for the IP phone to detect whether the working outbound
proxy server is available by sending the registration request after the fallback server takes over call con-
trol.
Note: It is only applicable to outbound proxy servers.
Permitted
Values
Integer from 0 to 65535
Default 3600
Web UI Account->Register->Proxy Fallback Interval
Phone UI
T54S/T52S/T48S/T48G/T46S/T46G/T29G:
Menu->Advanced (default password: admin)->Accounts->Account X->Proxy Fallback Interval
T42G/T42S/T41P/T41S/T40P/T40G/T27G/T23P/T23G/T21(P) E2/T19(P) E2/CP920:
Menu->Settings->Advanced Settings->Accounts->Proxy Fallback Interval
Parameter
account.X.redundancy_with_reg_fail.enable
[1]
<MAC>.cfg
Description
It enables or disables the IP phone to send the request to the next server when failing to register an
account.
Note: It works only if “account.X.fallback.redundancy_type" is set to 1 (Successive registration).
Permitted
Values
0-Disabled. Only if the working server does not respond, will the IP phone send the request to the next
server.
1-Enabled
Default 0
[1]
X is the account ID. For T54S/T48S/T48G/T46S/T46G/T29G, X=1-16; for T52S/T42G/T42S, X=1-12; for T41P/T41S/T27G,
X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
Failover Server Redundancy Configuration
The following table lists the parameters you can use to configure failover server redundancy.
Parameter
account.X.sip_server.Y.register_on_enable
[1][2]
<MAC>.cfg
Description
It enables or disables the IP phone to send registration requests to the secondary server when encoun-
tering a failover.
Permitted
Values
0-Disabled, the IP phone will not attempt to register to the secondary server, since the phone assumes
that the primary and secondary servers share registration information. So the IP phone will directly send
the requests to the secondary server.
1-Enabled, the IP phone will register to the secondary server first, and then send the requests to it.
Default 0
Parameter sip.skip_redundant_failover_addr <y0000000000xx>.cfg
Description
It enables or disables the IP phone only to send requests to the servers with different IP addresses when
encountering a failover.
Permitted
Values
0-Disabled
1-Enabled

Yealink T21PE2 Specifications

General

Brand	Yealink
Model	T21PE2
Category	IP Phone
Language	English