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Green rectangular circuit board with four black modular ports and gold edge connector

SunnyStar Co., Ltd

SunnyStar Co., Ltd QUAD X400M telephone accessory

SKU CH-Y0FE-KRVTQ

Adds four analog telephone lines to TDM800P or TDM2400P cards with modular expansion

  • Adds four analog lines per module for TDM800P and TDM2400P cards
  • Modular design lets you activate extra ports anytime with S400M or X400M daughter cards
  • Passes every call feature a standard analog telephone line supports
  • Worldwide certifications are pending for global deployment
  • Works with A800P, TDM800P, AEX8000P and TDM2400P analog cards

Modular quad FXO module

The SunnyStar QUAD X400M is a daughter card that adds four analog telephone line ports to compatible TDM series cards. It is designed for integrators and system builders expanding PSTN connectivity on Asterisk-based telephony platforms.

Passive thermal profile

The module draws power directly from the host card and operates without a dedicated fan or heatsink. Silent operation is inherent because the component has no moving parts and generates minimal heat during normal call handling.

Upgrades FXS-only configurations

This module replaces an empty slot or an FXS daughter card when the requirement shifts from internal extensions to inbound PSTN trunks. The jump is worthwhile when a deployment needs four additional analog line terminations and the host card has a free module bay.

How it compares

Measured against everything we stock in Headsets, Cords & Phone Mounts, at today’s prices. Recalculated every night.

Price $49.99
Pricier than about 72% of the 796 comparable items (median $17.99).

Specifications

Product
Model nameQUAD X400M

Questions about this item

How is the QUAD X400M module installed on a TDM800P card, and what step do people often miss?

Insert the daughter card into the TDM800P card's module slot, then secure it. The step often missed is activating the four analog ports in the system configuration after physical installation.

What maintenance or replacement will the QUAD X400M need later?

The module is a passive daughter card with no moving parts or consumable components. Replacement is only necessary if the card itself fails or if port requirements change beyond the four analog lines it provides.

What limit appears first on the QUAD X400M under sustained call load?

The module supports four simultaneous analog (POTS) lines per card. Under sustained use, the first limit reached is this four-port capacity, requiring additional X400M or S400M modules to expand further.

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