When I make a call from HQ IP phones to PSTN, It works. But when I make call from PSTN to IP phone, it gives the busy tone.
Its the same issue with Branch. Calls from branch to PSTN works but from PSTN to branch IP phones does not work.
In HQ, MGCP gateway is configured and In branch, SIP trunk is configured.
Its the same issue with Branch. Calls from branch to PSTN works but from PSTN to branch IP phones does not work.
In HQ, MGCP gateway is configured and In branch, SIP trunk is configured.