SIP-KPML to RFC 2833 Conversion for DTMF Events
The Oracle Communications Session Border Controller supports SIP KPML to RFC 2833 conversion for DTMF events.
SIP KPML to RFC 2833 Negotiation
The Oracle Communications Session Border Controller removes the Allow-Event header if it contains the value KPML.
A SUBSCRIBE request is sent for each KPML event upon a successful invite.
After the SUBSCRIBE even is successful, the Oracle Communications Session Border Controller will process all NOTIFY requests and respond with 200 OK messages.
The SDP-Insertion feature will be used if the Access-side does not offer a SDP in the invite and the core side does not accept an offer-less invite.
RFC 2833 to SIP KPML Negotiation
The Oracle Communications Session Border Controller adds an Allow-Event header with the value KPML to the INVITE message.
If a SUBSCRIBE message is received from the Access side, the Oracle Communications Session Border Controller will respond with a 200 OK message.
A KPML NOTIFY request is sent for each 2833 DTMF entered, until the subscription is terminated.