Template:SIP TEST V15 HINT
A most recent v15r1 firmware is required to use this SIP-profile. For hints regarding upgrade to v14r1, see Howto15r1:Firmware_Upgrade_V14r2_V15r1
New profiles are added in the course of our V14R1 software Service Releases, see ReleaseNotes15r1:Firmware. Here is an up to date list of tested SIP providers.