Has anyone setup a phone system to tie to a dictation system using SIP trunks? We have a customer with a Toshiba CIX670 upgrading their dictation system. This seems fairly simple using SIP extensions off the PBX but not so much using SIP trunks. The dictation system will need to be accessed internally and externally by dialing a DID number. They have an option of supplying a media gateway and using analog ports off the Toshiba. Thanks