Our offer listed AMR-WB alone. A call we place TO a landline then depends
on the far side transcoding up to wideband; a gateway that will not is
entitled to refuse. AMR narrowband is the 3GPP-mandatory codec every IMS
core and PSTN gateway can answer, so it goes second, with telephone-event
at the 8 kHz clock beside the existing 16 kHz one. AMR-WB stays first, so
a mobile-to-mobile call negotiates exactly what it did before; if the
network does answer AMR, the engine already starts the media leg on the
answered codec.
Byte pins in tests/Sdp and tests/Messages re-pinned (INVITE body 323 ->
466 bytes).
NOTE FOR RELEASE: this changes the MO INVITE on the path the arranged 112
calls used. One bench MO call on KPN before it ships.
Jorijn van der Graaf
d5aaf57e49