Trunk Gateway (E1/T1 Gateway) CNG 8000

Detailed Product Description
According to the request of corporation, industry and operator's voice service, CNG8000
is a trunk media gateway with high performance price ratio and good protocol
compatibility. CNG8000 implements the transformation between ISDN PRI signaling
and H. 323, SIP signaling, while transforming the media stream between PSTN
carrying channel and IP network.

CNG8000 supports the digital trunk E1/T1 interface adopting ISDN PRI signaling at
telephone network, and accomplishes the controlling and maintenance of the users'
call. It can be easily maintained and rapidly put into the use of corporation
and operator's construction of (NGN).

Voice interface: 1-16E1
VOIP Channels: 30-480
Trunk interface: BNC, RJ48 ( 75/120banlancing resistance )
Ethernet interface(RJ45): Two pieces of 10/ 100M Base-T
Serial interface(RJ45): One piece of RS232(CONSOLE administration port)
PSTN Protocol: ISDN PRI, support ITU PRI China No.
1. CAS, QSIG, DSS1 IP Protocol: Sip
2. 0 H323/V4(RAS, Q931, H235, H450)RTP/RTCP

Codec: G. 723.1(5.3k 6.4kb/s); G.729A/B(8kb/s); G.711A /U(64Kb/s)
Voice quality: TOS; Jiffer Buffer; VAD, CNG
Network Protocol: HTTP, BOOTP, FTP, TFTP, IP, NAT, ICMP, ARP, DHCP, PPPoE, SWMP,
Diff-Serv
Echo cancellation: G. 168(64-128ms)
Fax: FRF, T38, T30, confidential fax