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Green half-length PCI card with four modular ports

SunnyStar Co., Ltd

SunnyStar Co., Ltd TDM400P 3FXS 1FXO PCI 2.2 VoIP

SKU CH-ZZ21-2KTSA

A half-length PCI 2.2 card with three FXS and one FXO module for connecting analog phones and POTS lines to Asterisk-based telephony systems

  • Product typeWired VoIP
  • Half-length PCI 2.2 card fits compact systems
  • Four analog ports connect phones and PSTN lines
  • Three FXS modules support internal extensions
  • One FXO module links to outside phone lines
  • Works with Asterisk, Elastix and FreePBX software

TDM400P Analog Telephony Card

The TDM400P is a half-length PCI 2.2-compliant card that adds four analog ports to a standard PC. It ships with three FXS modules for connecting analog telephones and one FXO module for linking to traditional POTS lines. The card targets builders assembling an Asterisk, TrixBox or Elastix-based PBX for a small office or home office environment.

PCI 2.2 Slot and Driver Requirements

Installation requires an available half-length PCI slot that follows the 2.2 specification; PCI Express or legacy 5 V-only slots will not accept the card. The board relies on the Dahdi or Zaptel driver stack within the host operating system, so the chosen PBX distribution must include or support those kernel modules for the ports to function.

Port Mix and Expansion Limits

The fixed 3FXS and 1FXO configuration suits setups needing up to three internal extensions and a single external line. Systems requiring additional FXO ports, different port ratios or digital interfaces such as T1 or E1 cannot be satisfied by this card alone. Verify that the host chassis provides enough physical clearance for the bracket and that the power supply can deliver the necessary current for the installed modules.

How it compares

Measured against everything we stock in IP Phones & VoIP Handsets, at today’s prices. Recalculated every night.

Price $47.99
Cheaper than about 84% of the 495 comparable items (median $138.99).

Specifications

Product
Model nameTDM400
Product typeWired VoIP

Questions about this item

Should I choose the 3 FXS + 1 FXO module mix or a different port layout?

This card ships with three FXS modules for analog phones and one FXO module for a POTS line, giving you three internal extensions and one outside line in a single slot.

What does the half-length PCI 2.2 form factor mean once the card is installed in a server?

It fits a standard half-length PCI slot, so it works in low-profile or space-constrained chassis without blocking adjacent slots.

Which telephony software stacks does the PCI 2.2 interface actually support in practice?

The Dahdi and Zaptel drivers make it compatible with Asterisk, TrixBox, Elastix, FreePBX and other open-source PBX platforms that use those driver layers.

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