Paradyne 3910 Point-to-Point with Automatic Dial Backup, Auto Dial Back Set to Enable

COMSPHERE 3900 Series Modems

Point-to-Point with Automatic Dial Backup

Figure G-3 shows a sample configuration for point-to-point applications with automatic dial backup.

DTE

(Sync)

Cable 3

19200(V32t)

TX

3910 A

Dial

Leased

Cable 3

19200(V32t)

TX

3910 B

DTE

(Sync)

Cable 1 Cable 2 Cable 2 Cable 1

Figure G-3. Sample Configuration Ð Point-to-Point with Automatic Dial Backup

Configuration Options

3910 A Use Sync Leased (Answer) default configuration options with the following exception:

Auto Dial Back Set to Enable.

3910 B Use Sync Leased (Originate) default configuration options with the following exception:

Auto Dial Back Set to Enable.

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.

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 125-0067-0031 (a 6-position, 4-wire modular cord that is supplied with the modem). Attach this to the connector labeled DIAL.

G-4 November 1996 3910-A2-GN32-30