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B-4 Cabling and Interface Pinouts
Interface
Pinouts
ITU Recommendation V.35 Modem-to-Computer Interface
For compatibility with DTEs operating with a V.35 interface, the 326XFAS T-
SDC Series Modem supports an optional ITU Recommendation V.35 Modem-
to-Computer interface. Connection is made through the modem’s DTE port
(see Figure B-1).
NOTE: The 326XFA S T-SDC Series Modem with a V.35 interface is currently
available in the U. S. A. and Canada.
Caution
The 326XFA S T-SDC Series Modem, if ordered with ITU’s V.35
Recommendation, supports connection to external equipment also
operating with a V.35 electrical interface. If your DTE does not
have a V.35 interface, do not, under any circumstances, connect the
modem to a non-V.35 device. I fyou make such a connection, you
may seriously damage the modem. Telenetics makes no guarantee
of the equipment’s integrity if you do not ensure that compatible
interfaces are used. If your DTE does not have a V.35 interface, use
an external converter cable.
Figure B-1.
326XFAST
-SDC Series Modem with ITU V.35 Interface
NOTES:
1) The modem is configured at the factory for an EIA/TIA 232-D interface or
ITU rate V.35, and is shipped according to what you specify. Both interfaces
are not available in the same unit.
2) When operating with the V.35 interface, switch S1 must be set to the off (up)
position.
PHONE
DIAL
LINE
IN
NC
I
O
OUT
DTE V.35
1 ON 6
Factory Preset 6-Position DIP to Off(Up)