If the answer is YES, then you need CalnCall SIP Trunk services!
CalnCall integrates SIP Trunk services with VoIP technology without the need for IP-PSTN gateway. We provide superior quality SIP Trunks for IP-PBX and IP phones. We are certified with super brands like 3CX, Askozia, Allo, Asterisk, Grandstream, Cisco, Avaya, Beronet, Yealink, Htek, and others.
Supported Codec: G.729, GSM, G.711A, G.711U