{"id":24020,"date":"2026-06-16T15:36:11","date_gmt":"2026-06-16T19:36:11","guid":{"rendered":"https:\/\/redvoztelecom.com\/producto\/dbl-single-channel-goip-gsm-voip-gateway-imei-change-1-sim-card-sip-h-323-vpn-pptp-smsgsm-gatewaynetwork-modem\/"},"modified":"2026-06-26T17:00:05","modified_gmt":"2026-06-26T21:00:05","slug":"goip-1-voip-gsm-gateway-1-sim-canal","status":"publish","type":"product","link":"https:\/\/redvoztelecom.com\/en\/product\/goip-1-voip-gsm-gateway-1-sim-canal\/","title":{"rendered":"DBL Single-Channel GOIP GSM VoIP Gateway (IMEI Change, 1 SIM Card, SIP & H.323, PPTP VPN), SMS, GSM Gateway, Network Modem"},"content":{"rendered":"

GOIP GSM Modem, GSM VoIP Gateway (IMEI Change, 1 SIM Card, SIP & H.323, PPTP VPN). SMS GSM Gateway<\/strong><\/span><\/h1>\n

Related Products to Explanation:<\/strong><\/span><\/p>\n

<\/p>\n

Notes: <\/span><\/span><\/span><\/span><\/strong>All Goip modems are factory-new. 100% new! \u00a0<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

High quality is guaranteed, and we provide excellent, free after-sales technical support.<\/span><\/span><\/span><\/span><\/span><\/p>\n

<\/p>\n

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! <\/strong><\/span><\/p>\n

<\/p>\n

G1 = 1 Channel<\/strong><\/span><\/p>\n

Applications:<\/strong><\/span><\/div>\n
\u00a0<\/div>\n
The basic operation of our GOIP modem is as follows:<\/strong><\/span><\/div>\n
PSTN->GOIP,<\/span><\/div>\n
GOIP->PSTN,<\/span><\/div>\n
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.<\/span><\/div>\n
\u00a0<\/div>\n
Call Back<\/strong><\/span><\/div>\n
\u00a0<\/div>\n
Summary<\/strong><\/span><\/div>\n
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\u2019s 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.<\/span><\/div>\n
\u00a0<\/div>\n
Benefits of the GOIP Modem <\/strong><\/span><\/div>\n
Extensive product compatibility with industry-leading vendors; cost savings on calls between cell phones or to the PSTN<\/span><\/div>\n
Easy-to-install IP device with a web-based management interface. Can be managed and monitored remotely over the Internet\u2014a great service for system integrators to offer their customers. Goips can be grouped together to form a GSM gateway cluster.<\/span><\/div>\n
Termination between GSM\/VoIP: Scheduled or On-Demand SMS Broadcast Messages to Users<\/span><\/div>\n
(An additional SMS server is required)<\/span><\/div>\n
\u00a0<\/div>\n
Key Features<\/strong><\/span><\/div>\n
Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2)<\/span><\/div>\n
Single-Server Registrations<\/span><\/div>\n
SIP peer-to-peer mode<\/span><\/div>\n
SIP proxy mode<\/span><\/div>\n
2G GSM module: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz<\/span><\/div>\n
Advanced jitter buffer<\/span><\/div>\n
VLAN and QoS support<\/span><\/div>\n
Transversal NAT<\/span><\/div>\n
Call forwarding from GSM to VoIP and from VoIP to GSM<\/span><\/div>\n
Password or Trust List Protection for Dial-In and Dial-Out Modes<\/span><\/div>\n
Comprehensive Dial Plan<\/span><\/div>\n
Forward GSM Caller ID to a VoIP terminal<\/span><\/div>\n
Dynamic selection of codecs<\/span><\/div>\n
Echo Cancellation for Speakerphone<\/span><\/div>\n
Comfort Noise Generation (CNG)<\/span><\/div>\n
Voice Activity Detection (VAD)<\/span><\/div>\n
Firmware Upgrade via the GUI<\/span><\/div>\n
\u00a0<\/div>\n
Basic Features<\/strong><\/span><\/div>\n
LEDs for Power, Ready, Status, WAN, PC, GSM<\/span><\/div>\n
Call forwarding from GSM to VoIP and from VoIP to GSM<\/span><\/div>\n
Dial-in mode or dial-out mode only<\/span><\/div>\n
Dial Plan<\/span><\/div>\n
Password protection for both GSM dial-in and dial-out<\/span><\/div>\n
Forward GSM Caller ID to a VoIP terminal<\/span><\/div>\n
\u00a0<\/div>\n
Enhanced Features<\/strong><\/span><\/div>\n
Dynamic codec selection<\/span><\/div>\n
Advanced jitter buffer<\/span><\/div>\n
Automatic traversal of NAT and firewalls<\/span><\/div>\n
VLAN \/ QoS<\/span><\/div>\n
Router<\/span><\/div>\n
Echo Cancellation for Speakerphone<\/span><\/div>\n
Comfort Noise Generation (CNG)<\/span><\/div>\n
Voice Activity Detection (VAD)<\/span><\/div>\n
Auto-provisioning (requires an auto-provisioning server)<\/span><\/div>\n
Online Firmware Upgrade<\/span><\/div>\n
Multilingual support: English and Chinese<\/span><\/div>\n
\u00a0<\/div>\n
Supported Standards<\/strong><\/span><\/div>\n
ITU: H.323 V4, H.225, H.235, H.245, H.450<\/span><\/div>\n
RFC 1889 \u2013 RTP\/RTCP<\/span><\/div>\n
RFC 2327 SDP<\/span><\/div>\n
RFC 2833 RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals<\/span><\/div>\n
RFC 2976 SIP INFO Method<\/span><\/div>\n
RFC 3261 SIP<\/span><\/div>\n
RFC 3264 Offer\/Answer Model with SDP<\/span><\/div>\n
RFC 3515 SIP REFER Method<\/span><\/div>\n
RFC 3842: A Message Summary and Message Waiting Indicator<\/span><\/div>\n
RFC 3489 Simple Traversal of the User Datagram Protocol (UDP) Through Network Address Translators (NATs)<\/span><\/div>\n
RFC 3891: SIP Replaces Header<\/span><\/div>\n
RFC 3892 SIP Referred-By Mechanism<\/span><\/div>\n
draft-ietf-sipping-cc-transfer-04 Session Initiation Protocol Call Control \u2013 Transfer<\/span><\/div>\n
Codec: G.711 (A\/\u00b5-law), G.729A\/B, G.723.1<\/span><\/div>\n
DTMF: RFC 2833, In-band DTMF, SIP INFO<\/span><\/div>\n
\u00a0<\/div>\n
Free Roaming<\/strong><\/span><\/div>\n
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\u2014all you need is an internet connection. This makes calling more convenient and easier. What\u2019s more, it can save you a lot on call charges. Here is an example:<\/span><\/div>\n
\u00a0<\/div>\n
Example<\/strong><\/span><\/div>\n
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.<\/span><\/div>\n
<\/div>\n
Package includes <\/strong><\/span><\/div>\n
1 GOIP modem device<\/span><\/span><\/span><\/span><\/div>\n

1 power supply<\/span><\/span><\/span><\/p>\n

1 piece of Ethernet cable<\/span><\/span><\/span><\/div>\n
<\/div>\n
Product photos:<\/span><\/strong><\/div>\n
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<\/div>\n

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GOIP GSM Modem, GSM VoIP Gateway (IMEI Change, 1 SIM Card, SIP & H.323, VPN PPTP).SMS GSM Gatewway Related Products to Explanation: Notes: All the Goip modem items are origninally manuafactured. 100% new! \u00a0 High quality guaranteed, and we provide excellent and free after-sell technical support service. This GOIP G1 device is the GSM 2G […]<\/p>\n","protected":false},"featured_media":24028,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[128,15],"product_tag":[4635,4633,4637],"class_list":["post-24020","product","type-product","status-publish","has-post-thumbnail","product_cat-equipo-ip","product_cat-voip","product_tag-gateway-gsm","product_tag-goip","product_tag-voip-gsm-gateway","first","instock","sale","shipping-taxable","purchasable","product-type-simple"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/redvoztelecom.com\/en\/wp-json\/wp\/v2\/product\/24020","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/redvoztelecom.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/redvoztelecom.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/redvoztelecom.com\/en\/wp-json\/wp\/v2\/comments?post=24020"}],"version-history":[{"count":2,"href":"https:\/\/redvoztelecom.com\/en\/wp-json\/wp\/v2\/product\/24020\/revisions"}],"predecessor-version":[{"id":25596,"href":"https:\/\/redvoztelecom.com\/en\/wp-json\/wp\/v2\/product\/24020\/revisions\/25596"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/redvoztelecom.com\/en\/wp-json\/wp\/v2\/media\/24028"}],"wp:attachment":[{"href":"https:\/\/redvoztelecom.com\/en\/wp-json\/wp\/v2\/media?parent=24020"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/redvoztelecom.com\/en\/wp-json\/wp\/v2\/product_brand?post=24020"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/redvoztelecom.com\/en\/wp-json\/wp\/v2\/product_cat?post=24020"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/redvoztelecom.com\/en\/wp-json\/wp\/v2\/product_tag?post=24020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}