3pcc SIP NOTIFY

[kelptan]

Hold or resume for incoming SIP NOTIFY messages:
◆ A NOTIFY with the 'talk' event in early dialog triggers the softphone to accept a call
(OK response to NOTIFY followed by an OK response to INVITE).
◆ A NOTIFY with the 'hold' event during a call triggers the softphone to hold the call
(OK response to a received NOTIFY and INVITE request for hold).
◆ A NOTIFY with the 'talk' event during a held call triggers the softphone to send a
re-INVITE to resume the call (OK response to a received NOTIFY and INVITE request
to resume call).

My upstream sip server is configured as 3rd party call control which sends a SIP NOTIFY to sip endpoint to answer the call, hold and resume calls.

Any idea how to go about and implement this?

Thanks,

[InnovateAsterisk]

Brower Phone supports NOTIFY messages within the context of a subscription, like a voicemail subscription or a presence subscription.

Take a look here:

Browser-Phone/Phone/phone.js

Line 4725 in d343632

function ReceiveNotify(notification, selfSubscribe) {

This is the subscription NOTIFY handler: web_hook_on_notify(ContentType, buddyObj, notification.request.body) event built in, but as I mentioned, you have to be subscribed first.

Browser Phone also supports Out-of-Dialog messages:

Browser-Phone/Phone/phone.js

Line 5201 in d343632

function ReceiveOutOfDialogMessage(message) {

This is the handler for this message: web_hook_on_message(message); But in looking at the code now, I see it rejects the message if it doesn't recognize it.

Either you would have to make your own branch, and maintain it. In this branch you would add additional handling of the notify event for you own needs, or try the events above.

If you have more documents or an RFC for the notify messages we can try support it.

[kelptan]

Dear Conrad,

Basically the flow is based off rfc3725 (flow 1) with the addition of SIP Notify.
https://datatracker.ietf.org/doc/html/rfc3725#section-4.1

I'd attached the sample test calls (SIP Flow) as html file
flow.zip

you may refer to F8 and F9.