I am using cisco AS5300 as a voice gateway, which is connected to our SIP proxy server. when block the caller id on a sip phone on our netwrok and make off-net phone calls to PSTN it goes through E1 on As5300 and main number of E1 is presenting as CLID.
any idea ? why this is happening, why the caller id is not blocking.
Thanks in advance
Thanks in advance.