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Chapter 1 the Introduction of AX4D
Overview of the AX4D
AX4D Asterisk card is the telephony PCI card which supports four ISDN PRI E1/T1/J1 ports,
optional with teleco-grade hardware echo cancellation. Using AX4D digital PRI card, open source
Asterisk PBX and stand alone PC, users can create their IP PBX telephony solution include all the
sophisticated features of traditional PBX, and extend features such as voicemail in IP PBX.
Features
AX4D: Four ISDN PRI E1/T1/J1 ports
Support original Dahdi, Zaptel(No patch)
Support Asterisk, Freeswitch, Yate
Support Elastix, Trixbox, AsteriskNOW, PBX in a Flash
100% compatible with all features of Asterisk PBX
32-bit bus master DMA data exchanges across PCI interface at 132 Mbytes/sec for minimum host
processor intervention
Supports standard telephony and data protocols(Including PRI, CAS, CCS for voice and PPP,
HDLC, Cisco HDLC and Frame Relay for data modes)
Supports chan_ss7 and Openr2
Optional hardware echo cancellation
Select the hardware echo cancellation direction
Applications
ISDN PRI IP PBX
ISDN least cost router
Calling Card Platforms
IVR system
Call Center
Traditional Calls/VoIP Calls Conference
VoIP Gateway
Callback Service
Optional DSP Hardware Echo Cancellation Module
G.168–2002 echo cancellation in hardware
1024 taps/128 ms tail per channel on all channel densities
DTMF decoding and tone recognition
Voice quality enhancement: music protection, acoustic echo control, and adaptive noise reduction
Does not increase the physical size of the card, and no additional slot is required
