Originally posted by FONEFXR:
307 was in all DCS, Compact, 50SI and some 100R1's. 306 was for internal and 307 for external. They have combined both into 306 now
You are right. I was unable to find MMC 307 in the idcs 500 R1 system. However, I found an older DCS manual which shows both MMC 306 and MMC 307.
I guess that leaves me back to square 1 of testing to see if the fax machines themselves have a setting of pre-dialing the trunk group.
