Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
556
Verifying the firmware version
Press the OK/
√
key or select Menu > Status when the phone is idle to check the firmware version. For example
28.82.0.20
.
Item
Description
1
28
Firmware ID.
The firmware ID for each IP phone model is:
l
97: T57W
l
96: T54W
l
95: T53W/T53
l
108: T48U/T46U/T43U
l
116: T42U
l
35: T48G
l
28: T46G
l
66: T48S/T46S/T42S/T41S
l
29: T42G
l
36: T41P
l
54: T40P
l
76: T40G
l
46: T29G
l
69: T27G
l
44: T23P/G
l
52: T21(P) E2
l
53: T19(P) E2
l
78: CP920
2
82
Major version.
Note: The larger it is, the newer the major version is.
3
0
A fixed number.
4
20
Minor version.
Note: With the same major version, the larger it is, the newer the minor version is.
The IP phone does not update the configurations
Do one of the following:
l
Ensure that the configuration is set correctly.
l
Reboot the phone. Some configurations require a reboot to take effect.
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