Description
Motorola Codex 3512 DSU/CSU Modem PC 49151 w/ Power Supply – Used
The Motorola Codex 3512 DSU/CSU Modem is a compact desktop data service unit designed for digital leased-line and DDS (Digital Data Service) network connections. It interfaces customer premise equipment to the telephone company's digital network, providing reliable synchronous data transmission over dedicated circuits. This unit complies with FCC Part 68 rules and carries FCC Registration Number AT9USA-61590, making it suitable for direct connection to the public switched telephone network.
The Codex 3512 features a hinged front access panel that reveals an LCD display showing model and DDS status information, along with four tactile configuration push-buttons for local management. Three front-panel LEDs — T/R (Transmit/Receive), NC, and ST (Status) — provide at-a-glance line and circuit status monitoring. The rear panel is equipped with dual RJ-style network interface jacks (ALT and DDS), a DB-25 serial data port for DTE connection, a mini-DIN port, and a barrel-style DC power input. Motorola Codex built this unit to 120 VAC / 50-60 Hz / 0.25A power specifications, and it ships with its original external power supply adapter.
- Brand: Motorola Codex
- Model: 3512 DSU/CSU Modem
- Part Number (PC): 49151
- Interface: DB-25 DTE serial port, dual RJ network jacks (ALT + DDS), mini-DIN port
- Display: LCD front panel display showing model and circuit status
- Front Panel: T/R, NC, ST LED indicators; 4 push-button configuration keys
- Power: 120 VAC, 50/60 Hz, 0.25A
- Standards: FCC Part 68 compliant
- Form Factor: Desktop
- Condition: Used – pulled from working environment
- Included: Unit + external power supply adapter
The Motorola Codex 3512 DSU/CSU is well suited for maintaining legacy DDS leased-line connections, replacing failed units in existing digital private-line networks, and supporting older synchronous serial equipment that requires a dedicated CSU/DSU at the network demarcation point. Telecom engineers and network administrators supporting legacy infrastructure will find this unit particularly useful for keeping older point-to-point data circuits operational without requiring full infrastructure replacement. The built-in LCD and front-panel controls make it one of the more serviceable units from this era, allowing local configuration without external management tools.
Warranty Information
Additional Information
Brand: |
Motorola Codex |
Model: |
3512 |
MPN: |
49151 |
SKU: |
7320 |
Condition: |
Used – Pulled from Working Environment |
Seller Notes: |
Includes external power supply adapter. Unit shows typical yellowing on plastic housing. All six photos show the actual item. |
Form Factor: |
Desktop |
Country of Manufacture: |
United States |
Power Requirements: |
120 VAC, 50/60 Hz, 0.25A |
Interface Type: |
DB-25 DTE serial, dual RJ network jacks (ALT + DDS), mini-DIN |
Protocol: |
DDS (Digital Data Service) |
Standards Compliance: |
FCC Part 68 |
Management Type: |
Local – LCD display with 4-button front panel configuration |
Connector Type: |
DB-25, RJ-11/RJ-45 network jacks, mini-DIN, barrel DC power |
Number of Ports: |
2 RJ network jacks (ALT, DDS), 1 DB-25 DTE, 1 mini-DIN |
Compatible With: |
DDS leased-line circuits; synchronous DTE equipment with RS-232/DB-25 interface |
FCC Registration: |
AT9USA-6159 (partial, as visible on label) |
Condition Notes: |
This Motorola Codex 3512 DSU/CSU Modem was pulled from a working operational environment and is being sold in used condition. The unit has been visually inspected and all six photos show the actual item, including the front panel display, rear port c |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
