Physical Interfaces:
SDH Interfaces
2* Standard LC SDH, 155M
1+1 Redundancy Channels Protection
Master/Slave Clock Source

Main Control Unit(MCU)
1+1 Redundancy, Hot Plug

Digital Processing Unit (DTU)
4* DTU Maximum
Support 512 Voice Channels Each Board

Ethernet Interface
GE1: 10/100/1000 BaseT Adaptive Ethernet
GE0: 10/100/1000 BaseT Adaptive Ethernet

Serial Port
1* RS232, 115200bps

Voice Capabilities:
• Codecs:G.711a/µ law,G.723.1, G.729A/B, iLBC, AMR
• Silence Suppression
• Comfort Noise
• Voice Activity Detection
• Echo Cancellation (G.168),with up to 128ms
• Adaptive Dynamic Buffer
• Voice ,Fax Gain Control
• FAX:T.38 and Pass-through
• Support Modem/POS
• DTMF Mode: RFC2833/Signal/Inband
• Clear Channel/Clear Mode