Panasonic KX-TGP550T08 SIP Phone Firmware 22.58

last update:
December 12th, 2012, 13:09 GMT
developed by:
file size:
3.6 MB
C: \ Firmware \ Panasonic
Windows XP / Vista / XP 64 bit / Vista 64 bit / 7 / 7 64 bit



- Supported DECT repeater (KX-A405).
- Added the function to input the user ID and Password for digest authentication from handset.
- Improved to hear the ring-back tone during calling to the destination by REFER transfer.
- Expanded the digit of SIP/HTTP User Agent from 40 to 64.
- Supported TR-069 remote maintenance.
- Supported the access code based redirection service.
- Made the phone idle when the other party hung up the call.
- Changed the schema of the embedded redirection server URL from http to https automatically.
- Added the parameter that specifies the range for the delay interval, in minutes, for the random timing to access the provisioning server.
- Added the parameter that Specifies whether or not to add Route headers when setting OutBoundProxy.
New parameter:SIP_ADD_ROUTE_[1-8]
- Supported failover feature.
Added new parameter:SIP_FOVR_MODE_[1-8]
Specifies whether INVITE/SUBSCRIBE will also follow the REGISTER Failover result.
Added new parameter:SIP_FOVER_DURATION_[1-8]
Specifies the number of transmission times for the REGISTER method at the Failover destination.


- Improved the feature to forward to the conference server.
- Improved so that the phone shows the shared line status in case of including Comma in call-info message.
- Improved the impossibility of some handset function after web settings are reset when repeater mode is on.
- This is the improvement for ver.22.53 of firmware.

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