sip based

  1. Unable to make and receive calls - new install- on prem with OPTUS SIP

    Hello, We just installed 3cx. We are unable to make and receive calls, however when we changed SIP providers we were able to make and receive calls. Is there any config details anyone can provide so 3cx can connect with OPTUS SIP. Appreciate any guidance.

  2. Metered SIP Trunk

    We need to limit metered use of SIP for specific users. Most users will primarily use their extensions to take inbound calls. Is it possible?

  3. Maxcom SIP Trunk Mexico

    Hi all, we are about to install a 3CX at a client using SIP trunk from Maxcom in Mexico. The trunk provided uses IP base authentication and it currently working with and old snomONE IP PBX. All these inside the premises of the client. On our initial tests, we have modified the firewall rules to...
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