First of its kind in the industry, our card allows you to upgrade the firmware and unlock the number of ports which can be used on the card.

The card is mounted with 2 ports by default.

If you buy a 1 port card and later pay the upgrade, the second port will be unlocked.

If you buy a 2 port card and later upgrade to 4, the firmware will unlock the resources to run the 4 ports and we will ship you the port splitters required to turn the card into 4 ports.

You can also upgrade from 1 to 4 ports directly.

This 2nd generation card is half height and comes by default with both full and half height metal bracket.

The card is manufactured with the highest quality components and PCB in our fully automatic Surface Mount Technology factory. See video here: Click

ALLO supports the AsteriskTM community and has opted NOT to copy the DigiumTM PCI ID, like other manufacturers do unlawfully and against the will of DigiumTM. For you, the customer, this means you are buying a card which will continue to work with DAHDI when DigiumTM, the owner of AsteriskTM, decides to change their code in order to block the rogue manufacturers. Use our patched DAHDI version provided.

Should you choose to purchase the optional Line Echo Cancellation module which uses the industry standard Octassic® DSP, you will also receive for FREE our Conference Room Software. Once installed, the software allows you to set up, schedule and manage conferences which are MIXED IN THE Octassic® DSP.

Click here to see the software and features.
System Admin (username: admin / Password: admin)
Conference Creator (username: creator / Password: creator)
Conference Admin User (username: cadmin / Password: cadmin)

Hardware conference mixing is much more superior in sound quality and won't use any CPU resources.

Finally, all our 2nd generation cards are sold with the ALLO Card Installation Software. If you decide to use it, the card installation and configuration will be quick and easy, no more commands. Check below the access to the DEMO GUI of the ALLO Card Installation Software and Conference Room Software.

Dynamic Buffer Adjustment
Manual Interop
Field Firmware Upgrade
PCI/PCIe on same board
Works directly with DAHDI
Certified by
Also works with
Warranty Info

5 Years warranty

Key Features

  • SS7 Signaling supported
  • PCI and PCIe interface on the same card. Fully PCI 2.2/PCIe (X1) compliant
  • Four T1/E1/J1 ports with PCI-Express interface for high performance voice applications
  • Optimized per channel DMA streams and hardware-level HDLC handling unload the host CPU
  • Optional Octasic® DSP Echo Cancellation Module 128ms tail/channel (on all channel densities)
  • PRI Switch Compatibility: EuroISDN, Network or CPE, AT&T 4ESS, CAS Voice Modes
  • Interoperable with AsteriskTM, FreeswitchTM, YATETM, ElastixTM, TrixboxTM, FreePBXTM ...