I set up a PBX extension, on SIP 2, of my Obi100. SIP 1 is my residential VOIP provider. The PBX requires the use of some star codes for access to various functions. For example *97 to access my voicemail. When I try to dial **2*97 it gives me a busy tone, after entering **2*, so the dial out will not complete. Anyone have any ideas on how to fix this (other than changing the PBX to SIP 1)?