8-Channel GSM to VoIP Gateway GOIP SIP ip PBX ip phone: Quad Band SIP Asterisk IP PBX

4 port voip gsm gateway with 8 SIM card for GSM Terminal 850/900/1800/1900Mhz rotating with IMEI

Specifications:

GOIP_8 is a 8 SIM Card Broadband Phone Gateway that had been developed by DBL Co.

GOIP_8 SIM Card Broadband Phone Gateway is a new product that connect the GSM and the VOIP seamlessly. To GOIP_4 what is installed on the Mobile SIM Card, you can register the GSM telephone on the VOIP Softswitch.SIP and H.323 agreement are built in the GOIP_4 and configured flexible. 

Caller ID can be seen by using SIP. Flexible routing can meet the need of all kinds of call forwarding; even more special is that GOIP_4 support multi-device group, it can be easily combined into arbitrary number of channels of Large Gateway Group.

Application:

Saving Cost on International and Long Distance Calls
when you are in the other countries& you have this gateway at your Local office
you could dial & receive phone call from your customers as you are there without Long Distance fee
Very excellent solution for internal company with branch offices oversea. 

 Supported Standards:

- ITU: H.323 V4, H.225, H.235, H.245, H.450

- RFC 1889 - RTP/RTCP

- RFC 2327 SDP

- RFC 2833 RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals

- RFC 2976 SIP INFO Method

- RFC 3261 SIP

- RFC 3264 Offer/Answer model with SDP

- RFC 3515 SIP REFER Method

- RFC 3842 A Message Summaries and Message Waiting Indicator

- RFC 3489 Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)

- RFC 3891 SIP Replaces Header

- RFC 3892 SIP Referred-By Mechanism

- draft-ietf-sipping-cc-transfer-04 Session Initiation Protocol Call Control - Transfer

- Codec: G.711 (A/µ law), G.729A/B, G.723.1

- DTMF: RFC 2833, In-band DTMF, SIP INFO

Key Features:

- Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2)

- Single or Multiple Server Registrations

- Two 10/100 Ethernet circuits connect to the LAN and an additional device

- GSM module for making GSM calls

- Speech quality ensured by QoS at the Ethernet and IP layers and comprehensive jitter buffer

- VLAN and QoS support

- NAT Transversal and Router functions

- Voice prompts, HTTP Web, Auto Provision support for configuration and updates

- Highly stable embedded Linux operating system in high performance ARM 9 Processor

Basic Features:

- LEDs for Power, Ready, Status, WAN, PC, GSM

- Call forward from GSM to VoIP and VoIP to GSM

- Dial in mode or dial out mode only

- Dial Plan

- Password protection for both GSM dial in or dial out

- Retransmit GSM Caller ID to VoIP terminal

Enhanced Features:

- Dynamic selection of codec

- Advanced jitter buffer

- Automatic traversal of NAT and firewall

- VLAN / Qos

- Router

- Echo cancellation for Speakerphone

- Comfort noise generation (CNG)

- Voice activity detection (VAD)

- Auto provisioning (requires auto provisioning server)

- On line firmware upgrade

- Multi-language support: English and Chinese

Physical and Environmental:

Operating temperature: 10°C to 40°C (50°F to 104°F)

Storage temperature: 0°C to 50°C (32°F to 122°F)

Weight: 1500 g (1 lb) (Including AC/DC Adapter)

Size: 220 mm (W) x 380mm (L) x 85 mm (H) (Width x Length x Heigth

Power: 12 Vdc 3A (AC/DC adapter included)