I have GXW4108 (latest sw version, FXO ports). I am trying to sort out the hook flash (for the GW to pass it from the SIP trunk to PSTN analogue line).
One of the old release notes state- “Added support for regeneration of hook flash event upon receiving event from VoIP side via SIN INFO or RFC2833”
I would like to send DTMF 16 out of band with RFC2833 indicating in the telephony events 0-16 in the INVITE SDP to the GW. However the GW respond with 0-11.
Could anyone please let me know if this can be changed/configured somewhere on the GW.