Am 09.11.2010 09:46, schrieb EiSl 1972: > Hello all, > > I basically agree with the e.g. "Alert Info" in the header of the > INVITE, but I think you're missing one kind of application: call > manipulation by application via PBX (CTI). Here the calls are > manipulated via the PBX and not via the endpoint (terminal) itself. The > NOTIFY-Event: talk is then used to tell the SIP-endpoint it has to > answer the phone. In the same way this NOTIFY is used to put the call on > hold so it looks like the terminal initiated the hold. Via re-INVITE > (from PBX) it would be a remote held while from user perspective it has > to be local held. Also the conference is handled this way. I googled for the "talk" event but couldn't find a specification - is it somewhere documented? I found this thread but it does not describe the talk event: http://comments.gmane.org/gmane.ietf.sip-implementors/17345 regards Klaus > > To complete how it can be done (because we did the same). > I suppose you do not subscribe and so you are working with unsolicited > NOTIFY's. This has been mentioned earlier. > 1. Create a new callback handler, e.g. > static pj_bool_t on_rx_unsolicitedrequest(pjsip_rx_data *rdata) > 2. Within this handler, check for NOTIFY message: > if ( pjsip_method_cmp(&rdata->msg_info.msg->line.req.method, > &pjsip_notify_method) == 0 ) {...} > 3. Extract and check the header value using: > pj_str_t hdr_name = pj_str("Event"); > hdr = (pjsip_generic_string_hdr*) > pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &hdr_name, NULL); > 4. Do NOT forget to respond with 200-OK (except when you get ACK, then > return with PJ_TRUE !!) > pjsip_endpt_respond_stateless( pjsua_get_pjsip_endpt(), > rdata, PJSIP_SC_OK, NULL, > NULL, NULL); > > BTW: You can maybe do this better as first action in step 2 (so first > check on ACK) > 5. Finally register this handle to PJSIP: > static pjsip_module unsolicited_requests_module; > > memset(&unsolicited_requests_module, 0, > sizeof(unsolicited_requests_module)); > unsolicited_requests_module.id <http://unsolicited_requests_module.id> = -1; > unsolicited_requests_module.priority = PJSIP_MOD_PRIORITY_APPLICATION+1; > unsolicited_requests_module.on_rx_request = &on_rx_unsolicitedrequest; > unsolicited_requests_module.name > <http://unsolicited_requests_module.name> = > pj_str("UnsolicitedRequests-Module"); > status = > pjsip_endpt_register_module(pjsip_ua_get_endpt(pjsip_ua_instance()), > &unsolicited_requests_module); > > With regards, > > Eize > > > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org
