Compaq Armada 7700 Armada 7700 Family of Personal Computers Reference Guide - Page 206

Telephone Network Connection 1. The modem is suitable for connection to the Public Switched Telephone Network (PSTN) direct exchange lines and relevant branch systems (PBXs). 2. A ringer approximate loading (RAL) is a value given to all apparatus to be connected to the PSTN. Its value can be taken and used to calculate the maximum number of equipment items that can be connected in parallel without impairing the performance of the standard bell circuit. 3. The maximum RAL value for telephone equipment is 5. Exceeding the RAL value of 5 may cause your telephone(s) to ring weakly or not ring at all. 4. Only one modem should be connected to a telephone line. Connecting a modem in parallel with one or more telephone instruments is not allowed. 5. The RAL for this piece of equipment is 1.0. 6. The exchange should provide facilities for either loop disconnect (pulse) dialing or multifrequency (tone) dialing. The modem can be configured to operate with either system. 7. The operation of this equipment on the same line as telephones or other equipment with audible warning devices or automatic ring detectors will give rise to bell tinkle or noise and may cause false tripping of the ring detector. Should such problems occur, the user is not to contact Telecom Faults Service. 8. The Compaq series 576W global modem specified in this guide is for the Compaq 2890 series of computers. B-16 Regulatory Notices