U.K. BABT Users Notice
| (SupraExpress 56i Pro Global Modem - Desktop Products Only) | |
| The modem is intended for only use in the Compaq Internet PC. For the purposes of | |
| BABT approval, the modem is classified as a | |
Telephone | The modem is suitable for connection to the Public Switched Telephone Network | |
Network | (PSTN) direct exchange lines and relevant branch systems (PBXs). | |
Connection | A ringer equivalent number (REN) is a value given to all apparatus to be connected to | |
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| 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. | |
| 1. | REN = 3/n where n is the maximum number of units that may be used in parallel. |
| 2. | The maximum REN of a line is 4; therefore, the total REN of all apparatus |
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| connected to the line (obtained by summing the individual REN values) should |
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| not exceed 4. This value includes any BT provided instrument, each of which is |
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| assumed to have REN value of 1.0 unless otherwise stated. Exceeding the REN |
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| value of 4 may cause your telephone(s) to ring weakly or not ring at all. |
| 3. | Only one modem should be connected to a telephone line. Connecting a modem |
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| in parallel with one or more telephone instruments is not allowed. |
| 4. | The REN for this piece of equipment is 0.8. |
| 5. | The exchange should provide facilities for either loop disconnect (pulse) dialing |
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| or multifrequency (tone) dialing. The modem can be configured to operate with |
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| either system. |
| 6. | During dialing, this apparatus may tinkle the bells of other telephones using the |
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| same line. This is not a fault, and we advise you not to call the Fault Repair |
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| Service. |
| 7. | The modem specified in this guide is for the Compaq Internet PC. |
Government Approvals |