Xorcom has developed a revolutionary concept in telephony interfaces for Asterisk systems called Astribank XPP Technology. Using USB 2.0 ports to connect to any Asterisk server, Astribank eliminates the requirement for a PCI (E1/T1) card, and even for PCI slots.

Astribank awarded "Best in Show" at Internet Telephony Expo.
Astribank, Xorcom's innovative USB-connected channel bank specifically designed for Asterisk, was awarded "Best of Show" in the "Open Source Solution" category at the IT Expo held recently in Los Angeles.

Download these white papers:

Astribank vs. PCI Cards

Astribank vs. IP Gateways

Astribank vs. Channel Bank

Or the
Astribanks - the advanced channel banks for all Asterisk-based IP PBX
Astribanks are versatile and powerful channel banks that were specifically designed for the Asterisk IP-PBX and support all the common telephony lines and trunks: FXS, FXO, BRI, PRI and R2. The Astribank driver is a part of the standard Asterisk distribution. With Xorcom Rapid Live CD™, a fully operational Asterisk server with pre-configured FXS, FXO, BRI, PRI and R2 ports can be up and working in less than 3 minutes, there are myriad models in the range - including a high density 16 PRI port model shown below. Hardware Echo Cancellation and the resilience of Redundant Power Supplies are options for these products, though the HWEC is a standard component of all Astribanks with 6 or more PRI ports.
Why is USB the Ideal Interface?
The USB 2.0 interface provides a theoretical speed of 480,000,000 bits per second. A typical uncompressed phone conversation uses about 64,000 bits per second per direction, plus some overhead; in total less than 200,000 bits per second per phone call is used. Thus, the theoretical concurrent number of conversations that the USB 2.0 interface can handle is 480,000,000 divided by 200,000: roughly 2,400 calls for a single USB 2.0 port. This is a theoretical number, of course, and the typical host processor will not be able to handle this amount of concurrent calls, but it gives a clear answer to the question: "Can the USB port support heavy telephony traffic with multiple Astribanks?"

Connecting multiple Astribank units to a single USB 2.0 port is easy: simply use a USB 2.0 Hub to connect many Astribank units.
Unique Features of Astribank XPP Technology
  • Very high density – up to 32 analog ports and up to 16 PRI ports for up to 480 E1 channels (or up to 384 T1 channels) - Ideal for Service Providers read press release
  • High Speed 480 Mbit/s USB2 connectivity
  • Full support for fax and modems
  • Hot pluggable solution
  • Rack- or wall-mountable solution
  • Simple integration
  • Support for Input Ports
  • Support for Output Ports
  • Message Waiting Indicator (MWI) for analog phones (great for hospitality installations like hotels, condominiums, assisted living, etc.)