ATCOM AX-1E

Features:
One PRI port 30 channels 
Hardware DTMF detection
Conference Bridge
PCM bus connectors (PCM30, PCM64, PCM128)
4 dual-color LEDs (layer 1 state indicators)
Active channel switching (across multiple cards over the external PCM bus)
PRI ISDN protocol stack
Suitable for 3.3 volts and 5.0 volts 32 bit PCI 2.2 slots 

Application:
ISDN PRI PBX
ISDN least cost router
Voice over IP PRI gateways
VoIP integration of ISDN equipment
PBX to PBX trunking
IVR