Many thanks to all of you you have posted or called with potential solutions to this problem. I am now posting to provide you with a follow-up and our eventual solution to the problem.
First of all, it should be noted that the STSe is a fairly low-priced system that meets the needs of about 90% of our typical small customer's needs. The needs of this customer were not made evident until AFTER they system had been installed. Had we known what they were expecting, we may have sold them something different.
Anyway, it was determined that the ability to alter the outward dialing digits is a limitation inherent to the STSe on a PRI. The system would allow us to program it to perform the digit manipulation we were seeking, but it would not work.
The customer's operation consists of four different companies or entities, most owned by the same person. Each of these companies had it's own POTS line for their fax. We were able to parallel connect their fax lines to the four on-board loop start CO line ports. We then forced the after-hours forwarding of each company's DID to dial out over their respective fax number. This worked flawlessly.
The customer didn't necessarily need the actual DID number that had been dialed to be displayed as caller ID. They just wanted a way to differentiate between the calls so that they would know how to answer. By having the calls forward via each company's fax number, this problem was solved.
Thanks again to everyone for your input. It looks as if we have this problem resolved. :thumb:
