No Ringtone on MGCP Endpoint

Hi Peeps,

I am having a problem with MGCP endpoints not ringing. When i call from the PSTN (Via Cisco AS5300) the endpoint doesn’t ring. I can see Asterisk saying (Ringing) but no ringtone. Also when we pick up you can only hear voice one way (PSTN Caller cant hear mgcp person)

However. If you dial from the MGCP endpoint this works cool. No issues at all.

Any ideas??