Agency Regulatory Notices
C-13
Writer: Shelly Ficalora Saved by: J Abercrombie Saved date: 01/09/98 9:00 AM
Part Number: 266667-001 File name: 17Appc.doc
U.K. BABT User Information
The Series 2930A provides an integrated modem. For the
purposes of BABT approval, the Series 2930A is classified as a
host-dependent product.
Telephone Network Connection
■
The modem is suitable for connection to the Public Switched
Telephone Network (PSTN) direct exchange lines and
relevant branch systems (PBXs).
■
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.
❏
REN = 3/n where n is the maximum number of units that
may be used in parallel.
❏
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 4 = 4 value may
cause your telephone(s) to ring weakly or not ring at all.
❏
Only one modem should be connected to a telephone line.
Connecting a modem in parallel with one or more
telephone instruments is not allowed.
❏
The REN for this piece of equipment is 1.0.
■
The exchange should provide facilities for either loop
disconnect (pulse) dialing or multi-frequency (tone) dialing.
The modem can be configured to operate with either system.
■
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.
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