Analog Telephony Cards
4-Port
The 400 Series of analog cards supports up to four (4) connections per card in your Asterisk system. Using Digium's single-port interface modules, 400 series cards can scale from one (1) to four (4) ports. The modular nature of the cards allows you to mix and match between line (FXO) and station (FXS) interfaces, giving you the exact port configuration you need. Digum 400 Series analog cards are available in full-length PCI 2.2 and PCI Express form factors. | ![]() |
Applications
- Connect Asterisk-based systems to analog phone lines
- Connect analog PBX systems to VoIP services
- Channel Bank Replacement / Alternative
- Gateway Termination to analog telephones/lines
- Suitable for Small Office/Home Office (SOHO) and Small and Medium Business (SMB) applications
Specifications
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How to Buy
TDM400 Series and AEX400 Series cards are configurable with FXO, FXS, and an optional hardware echo cancellation module.
Use the telephony card selector to identify the correct Digium part number based on your requirements.
Where to Buy
local partner online retailer direct from Digium









