Digium TE220 PCI Express card provides termination of up to 60 channels of voice or data across two E1, T1, or J1 interfaces in a PCIe x1 form factor. Selectable on a per-port or per-card basis, the TE220 allows E1 and T1 circuits to be mixed with full channel synchronization. Supporting PCIe x1, the TE220 may be used in any available PCIe 1.0 compliant slot - 1x, x4, x8, and x16 without considerations for voltage selection or lane size.
Digium TE220 Dual Span T1/E1 PCI Express Card Digium has designed the TE220 to be fully compatible and integrated with Asterisk Business Edition, AsteriskNOW, and open source Asterisk. The TE220 supports industry standard telephony protocols including North American and European Primary Rate signalling as well as standard Robbed Bit, Channel Associated Signalling in addition to standard PPP, HDLC, and Frame Relay data modes.

Digium TE220 Target Applications
* Legacy PBX/IVR Services
* Voice-over Internet Protocol (VoIP) Services
* Complex IVR Trees
* "Meet-Me" Bridge Conferencing
* VoIP Gateways (supports SIP, H.323, and IAX)
* Calling Card Platforms
* Voice/Data Router (replace expensive routers)
* PRI/Switch Compatibility - Network or CPE

Digium TE220 PRI Switch Compatibility
* EuroISDN (PRI or PRA) - Q.931/Q.921
* AT&T 4ESS
* DMS 100
* Lucent 5E
* Network or CPE
* National ISDN 2
* CAS Voice Modes

Digium TE220 Data Modes
* SyncPPP (both Fixed and Dialup)
* Frame Relay
* Cisco HDLC
* Multi-Link PPP

Digium TE220 CAS Voice Modes
* Feature Group D
* E&M Wink
* a-Law, µ-Law, and Linear Modes Supported