Panasonic KX-TGP550T01 SIP Phone Firmware 22.38
- Extended the digit of "Line ID" from 24 to 63.
- Added the specification that the # key is treated as a regular dialed digit when dialed as or after the second digit.
(Y(default) : # is treated as the end of dialing delimiter)
(N : # is treated as a regular dialed digit)
- Added DTMF relay by using SIP-INFO method.
- DSCP value could be set separately for RTP and RTCP.
- Expanded the size of Refere-To header from 255 bytes to 511 bytes.
- Supported for some carriers to use the conference server of another domain.
- Improved the problem that the call transfer using REFER may be failed.
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