描述
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- SIP to ISDN and ISDN to SIP gateway
 - 24/30/48/60 digital voice channels
 - ETSI, DMS, NET2, 5ESS compatible
 - 1U x 19-inch, front access rack-mountable
 - 3 x 100Base-TX interfaces
 - WEB UI, remote upgrade
 
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Voice Features
- G.711 a/μ, G.726(32K), G.729A, G.723.1
 - Silence Suppression and Detection
 - Comfort Noise Generation (CNG)
 - Voice Activity Detection (VAD)
 - Echo Cancellation (G.168)
 - Adjustable jitter buffer
 - Adjustable packet time (by Codec type)
 - Programmable Gain Control
 - Adjustable call progress tone volume
 - TLS and SRTP encryption (optional)
 
SIP Method Support
- ACK, BYE, CANCEL, INFO, INVITE, MESSAGE, NOTIFY, OPTIONS, PING, PRACK, PUBLISH, REFER, REGISTER, SUBSCRIBE, UPDATE
 
SIP Call Features
- Peer to Peer Call
 - Call Forward – unconditional, busy
 - Do Not Disturb
 - Speed Dialing
 - Hot Line and Warm Line
 
Telephony Specifications
- In-Band DTMF, Out-of-Band DTMF Relay (RFC2833 or SIP INFO)
 - Caller ID
 - T.30 FAX passthrough
 - T.38 Real Time FAX Relay
 
SIP Account Management
- By channel registration
 - By E1/T1 registration (share account)
 - Invite with Challenge
 - Support RFC3986 SIP URI format
 
SIP Call Management
- Support Outbound Proxy
 - Support SIP Compact Form
 - SIP Registration Failover
 - Group Hunting
 - P-Asserted-Identity per RFC3325
 - Privacy Mechanism per RFC3323
 - Session Timers (Update / Re-invite)
 - DNS SRV Support
 - Call Types: Voice / Modem / FAX
 - User Programmable Dial Plan
 - CDR by RADIUS client
 - Manual Peer Table (for P2P calls)
 - E.164 Numbering, ENUM support
 
Physical
- WAN : 1 x 100 BaseTx, auto cross-over, auto speed negotiation, RJ-45 connector
 - LAN : 2 x 100 BaseTx switch, auto cross-over, auto speed negotiation, RJ-45 connector
 - E1/T1 : RJ48C
 - Factory default and Reset button
 
Physical
- Power, Alarm, VoIP, Run, AIS, RAI, LINK, LOS, LBK, WAN, LAN
 
Network Specifications
- WAN: Static IP, PPPoE, DHCP
 - Support IPv4, IPv6(optional)
 - QoS Support:
 
WAN: DiffServ, IP Precedence
- DDNS Support
 - Network Protocol Support:
 
IP, TCP, UDP, TFTP, FTP, RTP, RTCP, ARP, ICMP, NTP,DHCP, STUN Client, HTTP, HTTPS,
DNS, DNS SRV, TelnetNetwork Security Specifications
- DIGEST Authentication
 - MD5 Encryption
 - DoS Protection
 - Caller Filter by IP address
 
Device Management
- Web Based Configuration
 - Telnet command line interface (CLI)
 - IVR Configuration
 - FTP / TFTP / HTTP Software Upgrade
 - Configuration Backup and Restore
 - SNMP V3/ V2c/ V1(optional)
 
Digital Interface
- Supported Switch Types: ETSI, DMS, NET2, 5ESS
 - Line coding:
 - Line Impedance:
 - Framing :
 - ISDN Role: Network or User Side
 - Clock: Internal or External timing
 
E1 ISDN PRI: HDB3
T1 ISDN PRI: B8ZS, AMIE1 120 Ohm, Balanced
75 Ohm, UnBalanced (optional)
T1 100 OhmE1: ITU-T G.704, G.732
T1: SF, SLC96, ESFE1 Loopback
- Digital loopback (DLBK)
 - Remote loopback (RLBK)
 - ST-BUS loopback (SLBK)
 - Payload loopback (PLBK)
 - Metallic loopback (MLBK)
 - Per time slot Local loopback (LTSL)
 - Per time slot remote (RTSL)
 
SIP, Voice and FAX Related Standard
- RFC1889、 RFC2543、 RFC2833、 RFC2880、RFC2976、 RFC3261、 RFC3262、 RFC3263、RFC3264、 RFC5359、 RFC3265、 RFC3311、 RFC3323、 RFC3325、RFC3362、 RFC3515、RFC3550、 RFC3665、 RFC3824、 RFC3841、 RFC3842、 RFC3891、 RFC3892、 RFC3960、RFC3986、 RFC4028
 
Network Related Standard
- RFC318、 RFC791、 RFC792、 RFC793、 RFC768、 RFC826、 RFC959、 RFC1034、RFC1035、 RFC1058、 RFC1157、 RFC1305、 RFC1321、 RFC1349、RFC1350、RFC1661、RFC1738、 RFC2854、 RFC2854、 RFC2136、 RFC2327、 RFC2474、 RFC2516、 RFC2616、RFC2617、 RFC2637、 RFC2766、 RFC2782、 RFC2818、 RFC2916、 RFC3022、 RFC3489
 
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