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3Com OfficeConnect ISDN LAN Modem

Router

Basic Information

Manufacturer
3Com
Model
OfficeConnect ISDN LAN Modem
╰ Also known as
3C892A
Device Type
Router

Power

Power Supply
External

Fixed Interfaces

Data Interfaces

Qty Speed Protocol / Signaling Interface Notes
1x 128 kbps ISDN BRI (U) RJ-45 (8P8C)
4x 10 Mbps Ethernet RJ-45 (8P8C)
2x — FXS RJ-11 (6P4C)

Notes

Aug 28, 2026 7:11 PM · pizzdahutt

Accepts 10-30v DC input

Like the other 3Com TA's I have, it is very picky about accepting calls

Does not like 5ESS switch types

If you quickly change the countdown timer to 0 when it is waiting for Layer 1 to come up on the web interface, it will briefly countdown to -1 seconds and then dump you onto an error page and lock up.

Change History

Updated TheSerialPort 2026-09-12 15:22
  • Network Interface: Changed Protocol / signaling
Updated ben 2026-08-28 20:10
  • Status: Submitted → Published
Updated ben 2026-08-28 20:10
  • Also known as: (empty) → 3C892A