Business Telephone System questions

Unanswered Question
Apr 18th, 2007

I have some questions that maybe someone can help me to understand:

1. In a business telephone system, is the PRI that is used the same as an ISDN PRI?

2. If so, is it exactly the same?

3. One a PRI, is there one channel per phone call, so you have a maximum of 24 phone calls per PRI?

4. How does the telephone system get the phone call outside the building to another caller?

5. If you have a DID line and want to FAX sensitive documents, is it secure? Should it be encrypted?

6. What does it mean when someone becomes a POP?

I have this problem too.
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