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Sales Features 5641 and 5741 (IBM 2400 bPs and IBM
4800 bps Integrated Modems) contain FCC-registered
data protective circuitry. For each of these modems,
when you provide information to the telephone
company, you must specify:
• An FCC registration number of
AN09SA-67992-DP-N.
• A ringer equivalence number of 0.8B.
• A telephone handset with an exclusion key for data
operation or a USOC-type RTC with the following
options:
A2: Data equipment controls line
84: Aural monitoring provided
C5 (pushbutton) or C6 (rotary dial)
08: Voice mode indication
You must specify one of the following acceptable jacks:
• USOC RJ41 S or RJ45S (single line data jacks); type
RJ45S is recommended.
• USOC RJ41 M or RJ45M (multiple mounting
arrangement to accommodate a number of single line
data jacks).
The RJ41 S data jack must have its associated switch
set to PROG (for programmed operation) rather than to
FLL (fixed loss loop). The RJ45S data jack provides only
programmed operation.
When you order the Digital Data Service (DDS) network
for the Digital Data Service Adapter (DDSA) from your
telephone company representative, you should specify a
CSU (channel service unit) as the customer site
termination of the network and the rate at which you
intend to operate the DDSA.
Cable Requirements
4-3
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