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COMSPHERE 392xPlus Modems
G-8 November 1996 3920-A2-GN31-30
Cables
Cable 1 Use
a standard, customer
-supplied, EIA-232-D/V.24 cable with a DB-25-P (plug)
connector at one end to attach to the modem. Attach this to the connector labeled
DTE1, 2, 3, or 4.
Cable 2 Use part number 125-0053-1431 (an 8-position, 8-wire modular cord that is
supplied with the modem). Attach this to the connector labeled LEASED.
Cable 3 Use part number 818-2759-0111 or an equivalent customer-supplied,
EIA-232-D/V.24 crossover cable with DB-25-P (plug) connectors on both ends to
attach to the modems. (See Appendix C for pin assignments.)
Point-to-Point with Automatic Dial Backup
Figure G-4 shows a sample configuration for point-to-point applications with automatic dial
backup.
Cable
1
Cable 1
Cable 2Cable 2
Leased
28800(V34)
28800(V34)
TX
TX
Cable 4Cable 4
Dial
DTE
(Sync)
3920
Plus
A
3920
Plus
B
DTE
(Sync)
DTE
(Sync)
DTE
(Sync)
DTE
(Sync)
DTE
(Sync)
DTE
(Sync)
DTE
(Sync)
4800
4800
9600
9600
4800
4800
9600
9600
Figure G-4. Sample Configuration — Point-to-Point with Automatic Dial Backup