This article is the most frequently asked questions (FAQ) about the GeoPort Telecom Adapter.

Questions answered in this FAQ:

1. Why does the GeoPort sometimes connect to a service and immediately disconnect?
2. What is the difference between the modem port on a Macintosh and the GeoPort?
3. What is the maximum number of addresses that the same fax can be sent to simultaneously using the GeoPort for Power Macintosh (version 1.0) software?
4. What is the ringer equivalence and ring signal frequency range of the GeoPort Adapter?
5. What is the difference between the GeoPort Telecom Adapter and the Express Modem?
6. Which software do I need for my GeoPort Telecom Adapter and where can I find it?

• The standard modem port has connectors (pins) for in and out signals, timing, and handshaking. The GeoPort adds a ninth pin for power to an external device.
• The GeoPort also takes advantage of the power of the processor (either the DSP processor in the Macintosh AV computers or the PowerPC chip itself) to do telephone - either data or fax, or even voice. A modem is just a line interface to the telephone wire, a DSP to create the tones used, and software to run it. The DSP is on the motherboard, an inexpensive line interface (like a GeoPod Telephone Adapter) can be used, with software to run the modem.
  
  This makes it cheaper to add a modem to a machine, and makes it easy to enhance the modem through software to increase performance or to accommodate new standards.