SIP-KPML to RFC 2833 Conversion for DTMF Events
The Oracle® Enterprise Session Border Controller supports SIP KPML to RFC 2833 conversion for DTMF events.
SIP KPML to RFC 2833 Negotiation
The Oracle® Enterprise 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® Enterprise 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® Enterprise 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® Enterprise 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.