3rd Gen E1/T1/J1 PRI Card(1/2/4/8 Ports)


5 Years + 3 Month $ Back

Free Tech Support

This 3rd 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.

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 Octasic® 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 Octasic® DSP.

Upgrade PRI card using splitters.

Brand / Features DMA Dynamic Buffer Adjustment Interoperable with other vendors Field Firmware Upgrade
FCC Certified CE Certified
Also Works With
Works with Asterisk Works with FreeSwitch Works with YATE Works with TrixBox Works with FreePBX Works with IP BRICK

  • SS7 Signaling supported
  • 1, 2, 4, 8 E1/T1/J1 ports with PCI-Express interface for high performance voice applications
  • Fully PCIe Gen1.1 (x1) compliant
  • Optimized per channel DMA streams and hardware-level HDLC handling unload the host CPU
  • Optional OctasicTM DSP Echo Cancellation Module 128ms tail/channel (on all channel densities)
  • PRI Switch Compatibility: Euro ISDN, Network or CPE, AT&T 4ESS, CAS Voice Modes
  • Interoperable with AsteriskTM, FreeswitchTM, YATETM, ElastixTM, TrixboxTM, FreePBXTM ...
Technical Specifications

  • 1, 2, 4, 8 T1/E1/J1 ports with optimum PCI-Express interface for high performance voice and data applications
  • TDM channel alignment in hardware (instead of software), for greater voice integrity and reliability
  • Optional OctasicTM DSP Echo Cancellation Module 128ms tail/channel (on all channel densities)
  • Hardware-level HDLC handling to reduce the load on the host CPU
  • Fully PCIe Gen1.1 (x1) compliant
  • DMA Support with 64/32-bit bus master data exchanges across PCIe interface at 250 MB/s in each direction with minimum host processor intervention
  • DMA based data transfer for minimum host intervention and guaranteed data integrity on high volume systems
  • Timing clock mode selection as Slave or Master

Physical & Environmental

1,2,4 Port Specs 8 Port Specs
Operating Temperature 0°C to 50°C Operating Temperature 0°C to 50°C
Storage Temperature -40°C to 125°C Storage Temperature -40°C to 125°C
Dimensions 12.7cm x 6cm x 1.8cm Dimensions 15cm x 6.3cm x 1.8cm
Weight 63g Weight 125g
Support & Downloads

Allo Dahdi Drivers

Asterisk Version Allo Dahdi Driver Download E1/T1 drivers (32 & 64bit)
Asterisk 1.4, 1.6, 1.8, 10 & 11 Dahdi 2.6.1 Download
Dahdi Download
Dahdi 2.8.0 Download
Dahdi 2.9.1 Download
Dahdi Download
Dahdi 2.10.1 Download
Dahdi 2.10.2 Download
Dahdi 2.11.0 Download

(Last Update: 23 Feb 2017)

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