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 host-independent product.

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

 

 

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

 

 

connected to the line (obtained by summing the individual REN values) should

 

 

not exceed 4. This value includes any BT provided instrument, each of which is

 

 

assumed to have REN value of 1.0 unless otherwise stated. Exceeding the REN

 

 

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

 

 

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

 

 

or multifrequency (tone) dialing. The modem can be configured to operate with

 

 

either system.

 

6.

During dialing, this apparatus may tinkle the bells of other telephones using the

 

 

same line. This is not a fault, and we advise you not to call the Fault Repair

 

 

Service.

 

7.

The modem specified in this guide is for the Compaq Internet PC.

Government Approvals

2-7

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HP 17XL579 manual Babt Users Notice, Telephone, Network, Connection