I have a newly installed mitel awc system which is exhibiting very strage behaviour when devices connected via teleworker / Mitel Border Gateway try to access an audio conference. The AWC does not recognise the dtmf tones to enter the conference. This does not work for all teleworker devices including hardphone, UC advanced and SIP client. Audio conferences work fine with calls from external lines or internal extensions using both hardphone and UC advanced.
Any ideas welcome
-Lawrence