VoIP Asterisk card RX-4E1 is a Quad-Span E1 half-length PCI card which supports both telephony and data modes. RX-4E1 has four E1/PRI interfaces supporting PRA signaling, HDLC, PPP and Frame Relay data modes, and any combination thereof. With the VoIP Asterisk card RX-4E1, you can easily build your IP-PBX or Carrier system with handling 124 channels/calls.

Interfaces:
-4 X E1 interfaces
-PCI 5.0V interface

Features:

1. Be used for VoIP/Call Center/PBX
2. Provide four E1/PRI interface for to 124 channels/calls
3. Supports standard telephony and data protocols. (Including RBS and PRI protocol families for voice and PPP, Cisco HDLC and Frame Relay data modes).
4. 100% compatible VoIP Asterisk PBX all features.
5. Support SS7 (through chan_ss7)

Applications:
1. PBX/IVR Services
2. VoIP Services
3. VoIP Gateways
4. FAX Server, FAX On Demand
5. Voice Mail Services
6. Call Centers
7. Prepaid Calling Card System
8. Callback Service
9. Traditional Calls/VoIP Calls Conference
Data Modes:
Cisco HDLC
HDLC
PPP
Multilink PPP
Frame Relay
Voice Modes:
PRI CPE & PRI NET:
-NI1
-NI2
-EuroISDN
-4ESS(AT&T)
-5ESS(Lucent)
-DMS100
E&M:
-Wink
-Feature Group B
-Feature Group D
FXO & FXS
-Ground Start
-Loop Start
-Loop Start with Disconnect Detect