Digicom COMSPHERE 3911 User Manual
COMSPHERE 3900 Series Modems
G-8
September 1998
3910-A2-GN32-40
Configuration Options
3920 A
Use Sync Leased (Answer) default configuration options with the following
exception:
exception:
Rate at 19.2K
Set ports 1, 2, 3, and 4 to 4800.
3920 B
Use Sync Leased (Originate) default configuration options with the following
exceptions:
exceptions:
TX Clock Source
Set to RXC_Loop.
Rate at 19.2K
Set ports 1, 2, 3, and 4 to 4800.
Port TXC Source
Set port 4 to External.
3910 A
Use TMp (Control) default configuration options with the following exceptions:
TX Clock Source
Set to External.
LeasedLine Rate
Set to 4800(TMp).
3910 B
Use TMp (Trib) default configuration options with the following exceptions:
TX Clock Source
Set to RXC_Loop.
LeasedLine Rate
Set to 4800(TMp).
3910 C
Use TMp (Trib) default configuration options with the following exceptions:
TX Clock Source
Set to RXC_Loop.
LeasedLine Rate
Set to 4800(TMp).
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.
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.
supplied with the modem). Attach this to the connector labeled LEASED.
Cable 5
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.)
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.)