Description
GOIP GSM Modem, GSM VoIP Gateway (IMEI Change, 1 SIM Card, SIP & H.323, PPTP VPN). SMS GSM Gateway
Related Products to Explanation:
Notes: All Goip modems are factory-new. 100% new!
High quality is guaranteed, and we provide excellent, free after-sales technical support.
This GOIP G1 device is a GSM 2G device designed for voice and SMS only; it does not support 3G/4G/5G. Please check to make sure your country or location still has 2G service before purchasing, or contact the seller to confirm if you are unsure!
G1 = 1 Channel
Applications:
The basic operation of our GOIP modem is as follows:
PSTN->GOIP,
GOIP->PSTN,
A telephone is a standard phone. A softswitch is software installed on a computer. It acts as a server, while GOIP acts as a client. The setup requires GOIP, a telephone, a softswitch, and another phone that logs into the softswitch via a standard gateway device. Then you can connect PSTN to GOIP and GOIP to PSTN.
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Summary
The GOIP GSM Modem Gateway bridges GSM services and IP networks. It is ideal for VoIP-to-GSM services where a landline (PSTN) is not available, or for cell phone roaming via the VoIP network. The GOIP GSM Modem Gateway is designed to work in conjunction with key telephone systems and IP-PBXs to provide GSM communications. The GOIP’s extensive compatibility makes it an ideal choice for deployment in multi-vendor, open-architecture VoIP networks. The GOIP GSM Gateway is an excellent solution for rapidly deploying telephone services in areas where standard PSTN lines may not be readily available. It also offers significant savings on usage costs (long-distance or international), infrastructure, and maintenance compared to conventional PSTN.
Benefits of the GOIP Modem
Extensive product compatibility with industry-leading vendors; cost savings on calls between cell phones or to the PSTN
Easy-to-install IP device with a web-based management interface. Can be managed and monitored remotely over the Internet—a great service for system integrators to offer their customers. Goips can be grouped together to form a GSM gateway cluster.
Termination between GSM/VoIP: Scheduled or On-Demand SMS Broadcast Messages to Users
(An additional SMS server is required)
Key Features
Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2)
Single-Server Registrations
SIP peer-to-peer mode
SIP proxy mode
2G GSM module: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz
Advanced jitter buffer
VLAN and QoS support
Transversal NAT
Call forwarding from GSM to VoIP and from VoIP to GSM
Password or Trust List Protection for Dial-In and Dial-Out Modes
Comprehensive Dial Plan
Forward GSM Caller ID to a VoIP terminal
Dynamic selection of codecs
Echo Cancellation for Speakerphone
Comfort Noise Generation (CNG)
Voice Activity Detection (VAD)
Firmware Upgrade via the GUI
Basic Features
LEDs for Power, Ready, Status, WAN, PC, GSM
Call forwarding from GSM to VoIP and from VoIP to GSM
Dial-in mode or dial-out mode only
Dial Plan
Password protection for both GSM dial-in and dial-out
Forward GSM Caller ID to a VoIP terminal
Enhanced Features
Dynamic codec selection
Advanced jitter buffer
Automatic traversal of NAT and firewalls
VLAN / QoS
Router
Echo Cancellation for Speakerphone
Comfort Noise Generation (CNG)
Voice Activity Detection (VAD)
Auto-provisioning (requires an auto-provisioning server)
Online Firmware Upgrade
Multilingual support: English and Chinese
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 Summary and Message Waiting Indicator
RFC 3489 Simple Traversal of the 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
Free Roaming
To promote our product, we have now added some new features to GOIP. With these new features, you can make calls without using any software or platform—all you need is an internet connection. This makes calling more convenient and easier. What’s more, it can save you a lot on call charges. Here is an example:
Example
Peer-to-peer: This is a new feature that lets you use our VoIP service without a platform. What's more, it offers free roaming for international calls. You only pay for the local call.
Package includes
1 GOIP modem device
1 power supply
1 piece of Ethernet cable
Product photos:
Spanish 
English 
French
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