Auto Telecom Company

IP Trunk: G2-ITU

The G2-ITU is a Trunk Interface Unit designed to be installed in the GDS Hybrid IP system. It enables networking capability between systems over a SIP Based VoIP infrastructure, allowing direct station to station dialing, enhanced call routing and avoidance of costly toll charges.

The G2- ITU also can be used as a replacement for traditional telephone lines, offering additional features and significant cost savings on monthly telephone bills.

Specifications

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Model	voice channels
G2-ITU4	4
G2-ITU8	8
G2-ITU16	16
Capacity • Each GDS’s cabinet has 10 I/O slots (80 ports). •The G2-ITU can be installed in any slot. • The G2-ITU16 requires two I/O slots.

VoIP
• Codec: G.711A, G.711u, G.723, G.729
• Audio quality:
     VAD ( Voice Activity Detection )
     CNG ( Comfort Noise Generation )
     PLC ( Packet Loss Concealment )
     AJB ( Adaptive Jitter Buffer )
• Echo cancellation: G.168
• Gain Control: Input / Output: +/- 14db
• DTMF signal: In-Band, SIP-Info, RFC 2833
• DTMF payload: 96/101
• Communications protocol: SIP RFC-3261
• Support the features of the Outbound Proxy Server.
• Support IP address or Domain name setup.
• RTP/RTCP ( Real-Time Transport Control Protocol )
     RFC 3550, RFC 3551, RFC 2198
• Network Management Features
     Web browsing setting: HTTP
     Password-protected
     Support Static, DHCP, and PPPoE IP address assignments
     Software update: TFTP
     Support backup and restoration of the config file.
     Event Log File: TFTP
• QoS (Quality of Service): RTP(TOS/Diffserv),
UDP(TOS/Diffserv)
• Phone book: 20 sets of telephone numbers and their respective IP addresses.

＊ Specifications are subject to change without prior notice.

Features

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▇ ITU
• Each VoIP channel can be configured to connect to other VoIP devices in peer-to-peer mode or via a SIP server or service
provider.

• Each VoIP channel can be assigned to use a different SIP server or service provider. There are 4 sets of server details on each ITU card configurable for primary and secondary values of both Proxy server and SIP server.

• Incoming Trunk Hunt group capability

• Caller ID message: Telephone Number and Name

• Supports peer-to-peer VoIP communication under NAT environment.

• 20 sets of Telephone Number to IP Address Conversions for peer-to-peer connections.

• ITUs can be integrated together by registering with one another to provide station to station dialing on inter-system connections.

• Auto-detect and auto-adjust fax signal for the T.38 relay standard.

▇ GDS system features
• DID (Direct Inward Dialing)

• MSN (Multi-Subscriber Number)

• LCR (Least Cost Routing)

• All existing standard outside line features in the GDS are included, such as Incoming Call, Outgoing Call, Day & Night Service, DISA (Direct Inward System Access), Toll Control, Call Accounting (with SMDR), CO Line Ringing, Automatic Transfer, Line Group Assignment, etc.

＊ Specifications are subject to change without prior notice.