Description
Siemens TMDA Card S30810-Q1748-X 42519 MFG 35246 PBX Telephone Module
The Siemens TMDA Card S30810-Q1748-X is a plug-in circuit board module designed for use in Siemens PBX telephone switching systems, such as the HICOM platform. TMDA (Time Division Multiple Access) cards handle channel allocation and switching functions within the PBX backplane, providing the time-slot management necessary for routing calls between extensions, trunks, and system resources. This card is identified by part number S30810-Q1748-X, assembly number 42519, and manufacturing number 35246.
Specifications & What's Included
- Part Number: S30810-Q1748-X
- Assembly Number: 42519
- MFG Number: 35246
- Type: TMDA PBX Telephone Card / Module
- Form Factor: Card/Module with gold card-edge connector
- Onboard Oscillator: S&R V30141-Z44-F4-Rev2 VCXO, 12.352 MHz (date code 89/44)
- PCB Date Code: 1989
- PCB Flammability Rating: 94V-0
- Front Bracket Status LEDs: ACT (green), LCA (red), RMA (amber/orange)
- Edge Connector: Gold-contact card-edge
- Multiple DIP ICs onboard including Texas Instruments and other logic/memory devices
- Card only — no additional cables or accessories included
Applications
TMDA cards like this Siemens S30810-Q1748-X are used as replacement or spare modules in Siemens enterprise PBX telephone systems, including the HICOM family of business communication platforms. These systems were widely deployed in medium-to-large enterprise environments throughout the 1980s and 1990s for managing internal voice communications, trunk lines, and extension routing. The HICOM platform in particular was a major Siemens product line for corporate telephony, and field-replaceable cards such as this TMDA module are still sought after by organizations maintaining legacy Siemens PBX infrastructure. The three status LEDs on the bracket — ACT, LCA, and RMA — provide real-time indication of the card's operational state within the chassis, consistent with the slot-based modular architecture common to PBX systems of this generation. Technicians maintaining or repairing Siemens HICOM systems will recognize this card as a key switching/channel module within the backplane.
This Siemens TMDA Card S30810-Q1748-X (42519 / MFG 35246) has been inspected and appears to be in good condition. The PCB is clean with no visible cracked traces, burn marks, or damaged components. The gold card-edge connector contacts look good. The front bracket panel LEDs (ACT, LCA, RMA) are present and intact. Normal light handling wear is consistent with prior service use. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Siemens |
Model: |
S30810-Q1748-X |
MPN: |
S30810-Q1748-X |
Secondary Model: |
42519 |
MFG Number: |
35246 |
Type: |
TMDA Telephone PBX Card / Module |
SKU: |
41691 |
Form Factor: |
Card / Module |
Oscillator: |
S&R V30141-Z44-F4-Rev2 VCXO 12.352 MHz |
PCB Date Code: |
1989 (date code on PCB edge) |
PCB Flammability Rating: |
94V-0 |
Status Indicators: |
ACT (green), LCA (red), RMA (amber/orange) |
Edge Connector: |
Gold-contact card-edge connector |
Compatible With: |
Siemens HICOM / Siemens PBX systems |
Condition: |
Used – Inspected and in Good Condition |
Seller Notes: |
Card only; no additional accessories included. |
Country/Region of Manufacture: |
Germany |
Condition Notes: |
Siemens TMDA Card S30810-Q1748-X (42519 / MFG 35246) inspected and in good condition. PCB is clean; card-edge connector contacts look good; bracket LEDs intact. Normal light wear from prior service use. |
