Yealink SIP-T33P Administrator's Guide

Administrator’s Guide for SIP-T2 /T3 /T4 /T5 /CP920 IP Phones
305
Values
that the primary and secondary servers share registration information. So the phone will directly send
the requests to the secondary server.
1-Enabled, the 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 phone only to send requests to the servers with different IP addresses when
encountering a failover.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Parameter
account.X.sip_server.Y.expires
[1][2]
<MAC>.cfg
Description
It configures the registration expiration time (in seconds) of SIP server Y for a specific account.
Permitted
Values
Integer from 30 to 2147483647
Default
3600
Web UI
Account > Register > SIP Server Y > Server Expires
Parameter
account.X.sip_server.Y.retry_counts
[1][2]
<MAC>.cfg
Description
It configures the retry times for the phone to resend requests when the SIP server Y is unavailable or
there is no response from the SIP server Y.
The phone moves to the next available server after three failed attempts.
Permitted
Values
Integer from 0 to 20
Default
3
Web UI
Account > Register > SIP Server Y > Server Retry Counts
Parameter
account.X.sip_server.Y.only_signal_with_registered
[1][2]
<MAC>.cfg
Description
It enables or disables the phone to only send requests to the registered server when encountering a
failover.
Note: It works only if “account.X.sip_server.Y.register_on_enable” is set to 1 (Enabled) and “accoun-
t.X.sip_server.Y.failback_mode” is set to 1, 2 or 3.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
account.X.sip_server.Y.invite_retry_counts
[1][2]
<MAC>.cfg
Description
It configures the number of retries attempted before sending requests to the next available server
when encountering a failover.
Permitted
Values
Integer from 1 to 10
Default
3
Parameter
account.X.sip_server.Y.failback_mode
[1][2]
<MAC>.cfg
Description
It configures the mode for the phone to retry the primary server in failover.
Note: It works only if “account.X.sip_server.Y.address” is set to the domain name of the SIP server.

Yealink SIP-T33P Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Gray
Wall mountable	Yes
Operating system installed	Linux
Lines quantity	4 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	4
Volume control	Buttons
Number of function keys	5
Display diagonal	2.4 \
Display resolution	320 x 240 pixels
Voice codecs	AGC, AJB, CNG, G.711a, G.711u, G.722, G.723.1, G.726, G.729, G.729A, PLC, VAD, iLBC
Security algorithms	AES, HTTPS
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
RJ-9 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Input frequency	50/60 Hz
AC adapter input voltage	100 - 240 V
Power consumption (typical)	3 W
Power consumption (Power over Ethernet (PoE))	5 W
Number of handles included	1 pc(s)
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %

Weight and Dimensions

Depth	186 mm
Width	212 mm
Height	146 mm