Attempting Native Bridge in CLI

I am getting the following message in the cli of asterisk when on a call

Attempting native bridge of SIP/6005-b6d004f0 and SIP/

This message seems to repat every time I press a button on the phones keyboard. It also seems to be causing aserisk to not read me pressing *# to start recording. If I press *# a load of times after about the 5th time it seems to recognise it and start recording.

This is causing me probems as this is for a call centre that have to record sales calls and there pressing the record button and it is not recoring.

Any help would be gratefully appreciated

Were using hard phones and a sip outbound trunk which is going into a NexTone SBC netwokr