Digium TE220B: 2 ISDN PRI paths (2 x E1), support T1, E1, J1, PCI-Express x1 3.3V slot, with echo compensation module.
The Digium TE220B card will support up to 60 channels of voice or data from two E1, T1 or J1 interfaces in the PCI Express form factor. By selecting per-port or per-card, the TE220 allows you to mix E1 and T1 with full channel synchronization. Always supporting PCIe x1, TE220 can be used in any of the available PCIe 1.0 slots: 1x, x4, x8, and x16 without worrying about power supply, voltage selection or line size.
The TE220 can be paired with a Digium VPMOCT064 Octasic echo canceller, or with a Wikoristan DSP (Digital Signal Processor). VPMOCT064 is based on the G.168 algorithm, which has clearly demonstrated in the tests the latency in the range of 128 ms (1024 outputs) on all 60 channels with the E1 channel and all 48 channels with the T1/J1 channel.
The TE220 is designed by Digium to work seamlessly with Asterisk Business Edition, AsteriskNOW and Asterisk with open source code. The TE220 supports industry standard telephony protocols, including American and European Primary Rate signaling, standard Robbed Bit, Channel Associated Signaling in addition to standard PPP, HDLC and Frame Relay data mode.
Brief technical specification
* PRI confusion
o AT&T 4ESS;
o CAS Voice Modes;
o DMS 100;
o EuroISDN (PRI or PRA) - Q.931/Q.921;
o Lucent 5E;
o National ISDN 2;
o Network or CPE.
* Data transfer protocols
o Cisco HDLC;
o Frame Relay;
o Multi-Link PPP;
o SyncPPP (both Fixed and Dialup).
* Voice protocols
o a-Law, μ-Law, and Linear Modes Supported;
o E & M Wink;
o Feature Group D.
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