Digium 4-Port Analog Telephony Cards
The A4 Series of analog cards supports up to four (4) connections per card in your Asterisk system. Using Digium’s single-port interface modules, A4 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. Digium A4 Series analog cards are available in low profile, half-length PCI and PCI Express form factors.
- One (1) – four (4) analog ports
- PCI or PCI Express bus architectures
- Combine line (FXO) and station (FXS) modules
- Accepts up to four (4) single-port modules
- Optional DSP -based carrier grade echo cancellation module
- 32-bit 33MHz