Delay on answer (outgoing calls, sometimes incoming)

Calls are completing and working fine now, but whenever calling out, and sometimes calling in, there is a click click noise (almost sounds like hanging up) that happens for about 2 seconds, then the call opens to conversation.

I’m using Asterisk on Debian Sarge, a standard PSTN phone hooked to a HandyTone 268 on Teliax voip service. This problem started occurring after working on another problem. The changes made include, switching to SIP from IAX and using the ULAW codec. Sound quality is now pretty good, but this delay on answer is not right.

Any ideas? Thanks

Fixed this issue, turned off the “Reverse Polarity” on call termination and connection. Good as new.