Guidance on connecting ESP12F to a SIP server having SIM 800
Posted: Mon Aug 29, 2022 12:20 am
Hello all I was developing an IVRS planning to use SIM800 GSM module for calling gateway which will further be connected to a SIP server through ESP12-f to establish a call on IP Server .I wanted to know is there a way or any library with example that can establish call to another SIP server and do the usual task as setup in IP PBX server to connect to other extension etc or open IVRS menu like press 1 to connect to department x etc