Filter
Top Products
Regulatory Notices
C-13
The output power of this modem is fixed and cannot be changed by the user.
The approval mark attached to this product indicates that the modem itself carries BABT
approval. No approval is conferred on the host computer or the serially connected computer
and the label must not be transferred to the case of the computer. A copy of the approval
label may be attached to the telephone line cable. The approval label must not be removed.
The text of the approval mark is reproduced below:
APPROVED for connection to
telecommunications systems specified in the
instructions for use and subject to the conditions
set out in them.
The modem does not incorporate circuitry to suppress bell-tinkle during pulse dialing. When
used with some electronic ring type telephones and on two wire circuits that bell tinkle will
occur during pulse dialing. This is not a fault and we advise you not to call the Fault repair
service. This modem is not approved for use with parallel connected telephones when used
in public dialing mode.
Ringer Equivalence Number (REN)
REN is a customer guide to indicate the maximum number of apparatus that may be
connected simultaneously to a single telephone line without affecting the bell (or tone)
ringing characteristics of the items connected. The REN of each line connection of the
modem is 1. To calculate the maximum number of items that may be connected to a single
exclusive telephone line add all the REN values of the connected equipment. The total
should be 4 or less. Unmarked telephones are assumed to have a REN of 1. All other
equipment must be clearly marked with it REN value. If a REN of 4 is marked on the
apparatus, then only apparatus marked with a REN of 0 (zero) are permitted to be connected
simultaneously. Because of the wide spread of characteristics a guarantee of successful
operation in an installation of mixed types of equipment may not be given by the supplier.
This apparatus has a REN of 1.0 for each line connection.
Hook Flash
The XircomUser’s Guide refers to “Hook Flash’ using the “!” dial modifier. For use in the
UK this modifier generates a momentary break of 95 ms (not 600 ms) in accordance with
UK type approval regulations. This timing is fixed.
Guard Tone
By default the &Gn command is set to n=2 (1800 Hz).
Speaker Control
The Mn command controls the signal presented to the host PC. There is no speaker on the
modem itself.