Global Tech GT-IAD-8S8O VoIP Gateway/IAD/ATA is kind of multi analog access equipment. The WAN port can access with IP network and downlink port able to carry with multiple analog telephone.  Being user access layer equipment in next NGN network, GT-IAD series voice access gateway forwards data and voice of end user into Packet Switched Network and accomplish relative functions.
Processing data and voice of traditional voice service which VoIP ATA provides, it contains functions such as forwarding the data packet, processing the analog voice and streaming media forwarding. These advance features makes VoIP ATA products support existing and new service of NGN network. The unit  support Call hold, Call waiting, Call forward, Do not disturb, Blind transfer, Attended transfer, PSTN Escaping, 3-way conference and so on.

GT-IAD-8S8O Series VoIP gateway is  1U,19inch, modular Add and Drop design with 8FXS+8FXO. The equipment have integrated H.248/SIP/MGCP protocol. And user can select protocol VIA WEB browser.  It can also support customized function development like H.248 protocol with  internal call and PSTN escaping.

Product Feature

● Complete product line, support up to 128 ports of fxs/fxo. For 1U rack mounted, maximum capacity is 32 FXS/FXO/MIX.
● Support main protocol such as SIP,H.248 and MGCP in one box. End user can select by Web Browser.
● G.711 A-Law/u-Law, G.723.1, G.729 A/B ;High quality voice, support for voice encoding / compression the G.711 A-Law/u-Law, G.723.1, G.729 A, / B;
● Support VLAN tagging and QoS which able to distinguish services, Support Call hold, Call waiting, Call forward, Do not disturb, Blind transfer, Attended transfer, 3-way conference
● Flexible access, Strong network adaptability. Network setting support various kind of ways such as static address, PPPoE and DHCP. 
● Provide data port for network connection of terminal such as PC. The equipment support Web Browser management. 

 Technical Parameter

● Protocol
■ VoIP: SIP, MGCP, H.248
■ Facsimile: T.30, VBD, T.38
■ Media Transmission:RTP/RTCP, SDP
■ Network layer protocol: TCP/IP, PPPoE, DHCP Client/Server, NAT, Bridge, IEEE802.1p/Q
■ Network Management Protocol: SNMP,TFTP
■ QoS: IEEE802.1p, IEEE802.1Q, VLAN, IPv4, ToS

● Voice Encoding and Decoding
■ ITU-T G.711(A-law/μ-law)
■ G.729 A/B
■ G.723.1

● Voice Parameter
■ Voice Activation Detection
■ Comfort Noise Generator
■ Dynamic Jitter Buffer Processing
■ Echo Cancellation: maximum 32ms

● Network Management and Configuration
■ WEB
■ SNMP
■ CLI

● Software Upgrade
■ CLI
■ TFTP
■ WEB

● Hardware Parameter
■ Ethernet Interface: 2 ports of 10M/100M RJ-45 Ethernet, 1 port of WAN and LAN
■ PSTN Interface: RJ11/RJ21/HBR68, FXO and FXS(Maximum 128 ports in flexible configuration)
■ Testing Interface: RS-232
■ Power Input: AC100-240V, Output: DC9V,1A

● Operation Environment
■ Working Temperature: 0℃ to 50℃
■ Storage Temperature: -10℃ to 70℃
■ Relative Humidity: 10% to 90％
■ Power Consumption: 6 up to 250W
■ Physical Dimension:
Standalone   161mm×30mm×91mm

Typical Network Diagram