In the RFC 2976 , it states:
"
The following are a few of the potential uses of the INFO message:
- Carrying mid-call PSTN signaling messages between PSTN
gateways.
- Carrying DTMF digits generated during a SIP session.
- Carrying wireless signal strength information in support of
wireless mobility applications.
"
How are these messages conveyed in INFO packet ? Do we have to come up
with some propriety headers to pass on this information or are there any
standard headers ? Where can i find information regarding this ?
Also i was reading on SIP Precednce mapping to MLPP Interworking draft.
It has explained the usage on prority headers for prempting a call.
Where can i find examples on priority usages ?
Thanks in advance,
Prabha N
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