YX 16 Ports 2G/4G LTE GOIP VoIP GSM Gateway for 16/64/128/256/512 Sim and Bulk SMS & Voice Call Gateway

Product Advantages

• High-Density Flexible Configuration
  16 concurrent independent channels, with 16/64/128/256/512 SIM slot options, supports smart automatic SIM rotation and backup mechanism, perfectly matches business needs from small-scale to large-volume deployment.
• Global Network Compatibility
  Equipped with industry-proven M26 (2G) and Quectel EC25/EG91 (4G) modules, with region-specific frequency band customization, fully compatible with GSM/WCDMA/LTE networks in over 100 countries and regions worldwide.
• Full-Protocol Voice & SMS Capabilities
  Fully compliant with mainstream SIP RFC3261 and SMPP3.4 protocols, supports stable two-way voice calls, bulk SMS sending/receiving, and open HTTP API, enabling seamless integration with softswitch, SMS platforms and your business systems.
• Intelligent Anti-Blocking Management
  Rich customizable automation rules for SIM switching, call/SMS control and risk monitoring, effectively reduces SIM card block rate, ensures long-term stable operation and maximizes SIM service life.
• Industrial-Grade Reliability & Support
  Robust hardware design for 7/24 uninterrupted operation, with 12-month manufacturer warranty, complete English user guide and professional after-sales technical support for global customers.

Upgrade your communication system today with the YX 4G LTE GOIP Gateway. Whether you're handling call routing, bulk messaging, or both—this is your trusted sms gateway provider. Don’t wait—buy now and take full control of your voice and SMS workflow.
 

Customizable SIM Configuration for Diverse Business Needs

• GP 16 Port 16 SIM: 1 dedicated SIM per channel, 16 total SIM slots for stable, mission-critical dedicated channel communication
• GP 16 Port 64 SIM: 4 SIM cards per channel, 64 total SIM slots for moderate scale business expansion
• GP 16 Port 128 SIM: 8 SIM cards per channel, 128 total SIM slots for growing high-volume operations
• GP 16 Port 256 SIM: 16 SIM cards per channel, 256 total SIM slots for enterprise-level bulk SMS and call deployment
• GP 16 Port 512 SIM: 32 SIM cards per channel, 512 total SIM slots for large-scale, high-concurrency communication services

Industry-Leading Voice & SMS Core Functions

Comprehensive Voice Call Capabilities

• Full compliance with SIP/2.0 RFC3261, Session Timer RFC4028, and STUN protocol, enabling perfect integration with mainstream softswitch systems, IP PBX, SIP servers, and VoIP platforms
• Supports a wide range of voice codecs including G729a/b/e, G723.1, G.711 A/U law, and iLBC, with built-in adaptive jitter buffer, advanced echo cancellation, and silence suppression & detection (VAD/CNG) to deliver crystal-clear voice quality even in unstable network environments
• Rich telephony features: Hot-line call, customizable dial plan, speed dial, phone book, CDR statistics, LCR (Least Cost Routing), white/black list management, call forwarding (unconditional, no answer, busy), caller ID display/generation, mobile number portability, and N-way conferencing
• Flexible DTMF handling: Accurate DTMF tone detection and generation, with support for in-band, RFC 2833, and SIP INFO DTMF relay modes to match different system requirements
• Fully customizable call control: Call waiting, per-SIM/call duration limitation, auto answer, FAS shield, fake ringback, and port inter-calling function to optimize SIM card usage behavior and avoid operator restrictions and blockages

Advanced Bulk SMS Management System

• Full SMS protocol compliance: Supports SMPP3.4, HTTP API, and EIMS protocol, enabling seamless integration with your SMS platform, bulk SMS marketing system, and IoT management platform
• End-to-end SMS functions: Two-way SMS sending and receiving, multi-mode SMS forwarding (GSM/SIP/HTTP/Email), SMS inbox management, scheduled bulk SMS sending, and support for both PDU and TXT SMS formats
• Smart SMS control: Configurable bulk SMS sending interval, SMS status report tracking, SMS prefix routing, SMS spam filtering, and customizable SMS sending limits (total/daily/monthly) to help you comply with local operator rules and regulations
• Built-in HTTP API interface, supporting both GET and POST requests for SMS sending, SMS receiving, and USSD sending, making it easy to integrate with your own business system for fully automated operation and management

Intelligent SIM & Device Automation Management

• Highly customizable automatic SIM rotation rules: Triggered by accumulated call duration, connected calls, consecutive failed calls, consecutive no-alert calls, accumulated SMS count, consecutive failed SMS, and more, to automatically switch between SIM cards and lock abnormal cards in real time
• Full IMEI management: Customizable fixed IMEI setting, dynamic IMEI range configuration, and automatic IMEI switching based on preset conditions to meet regional compliance requirements
• Native USSD support: Manual and automatic USSD sending, real-time USSD balance query, smart tariff management, and 24/7 SIM card status monitoring
• Rich automation functions: Scheduled SMS sending, SIM online time control, call frequency limitation, auto recharge compatibility, and real-time device status notification push to your server
• Built-in VPN (PPTP/OpenVPN) support, proxy encryption solution for IP block prevention, bandwidth optimization, and SIM bank compatibility for remote centralized SIM management

Reliable Maintenance & Remote Management

• Web-based remote management system, fully compatible with mainstream browsers (Chrome, Firefox, IE, Opera), for easy device configuration, real-time status monitoring, and data statistics checking
• Multi-language interface, one-click configuration backup and restore, HTTP/TFTP firmware upgrade, and detailed operational statistics (ASR, ACD, PDD, call/SMS traffic statistics) for business analysis and troubleshooting
• Supports ERMS remote management system, SNMP protocol, telnet access, and built-in network debug tools (ping, packet capture) for professional maintenance and troubleshooting
• Industrial-grade hardware design with stable power supply, over-temperature protection, and a wide 0-50ºC operating temperature range, perfectly suitable for 7/24 uninterrupted industrial operation

↓ Platform admin panel page display

you can see that the "eSIM" text in the upper right corner turns green, indicating that the eSIM function of the device has been enabled.

Order, Logistics & Payment Details

Simple Ordering Process

1. Complete payment for your selected product model and configuration
2. Our team will confirm your delivery information and frequency band requirements with you promptly
3. We conduct strict pre-shipment testing and quality inspection on every device
4. Shipment will be arranged within 2 working days after confirmation, with package photos and a logistics tracking number provided for real-time tracking
5. Our customer service team will keep you updated on logistics progress, tax payment reminders, and delivery notifications
6. After receiving the goods, contact our customer service for any technical support, and we will arrange professional technicians to assist you promptly

Flexible Shipping Methods

• Express Delivery (DHL, UPS, FEDEX, EMS, 4PX): Faster delivery with full end-to-end logistics tracking updates. Customers are responsible for local customs clearance and tax payment.
• Dedicated Line Logistics (Regional Dedicated Lines): All-inclusive service with customs clearance and tax payment included, with door-to-door delivery. Logistics tracking updates will be available after the package arrives at the destination customs and is handed over to the local logistics provider.For specific logistics options and timelines in your country, please consult our customer service team.

Secure Payment Methods

• USDT (Cryptocurrency): No additional transaction fees, and an exclusive 3% discount on the product price is offered for USDT payments. Please contact our customer service for the official USDT wallet address.
• PayPal
• Credit Card
• Telegraphic Transfer (TT)Other payment methods can be processed directly via the checkout page for secure online payment.

Important Tips

• Declaring the product as a power amplifier for customs declaration can help simplify the clearance process and reduce import tariffs.
• Please confirm the network status of your target country before placing an order, especially regarding 2G network availability.
• We provide a complete English user manual and lifelong technical consultation support for all our products.

Contact Our Professional Team

↓ VoIP and SMS gateway connection demonstration

↓ Unscrew the power amplifier casing

↓ Unscrew the switch casing

About Us

YxInternet is a professional supplier specializing in consumer electronics, smart devices, and lifestyle products. With years of experience in global trade and a strong supply chain network, we provide businesses and end-users with reliable products at factory-direct prices.

Our mission is to bridge quality manufacturing with global buyers, making cross-border sourcing easier, faster, and more transparent. From product selection to quality control, and from fast delivery to after-sales support, YxInternet ensures every order meets high expectations.

Why Choose Us

• Extensive Product Range：From smart electronics to innovative gadgets, we cover a wide range of categories to meet various market demands.
• Direct-from-Manufacturer Pricing：We work directly with reliable factories, ensuring competitive wholesale prices with no hidden costs.
• Strict Quality Control：Every product goes through multi-level quality checks, from factory audits to pre-shipment inspections, guaranteeing what you receive matches your expectations.
• Efficient Logistics Network：With global shipping partnerships, we offer fast and trackable delivery to over 100 countries, keeping your orders on time.
• Dedicated Customer Service：Our professional team is ready to support you before, during, and after your purchase, ensuring your sourcing experience is smooth and hassle-free.

FAQ

What network frequencies does the YX 16 Ports GOIP VoIP GSM Gateway support?
We provide models supporting full frequency 2G GSM (850/900/1800/1900 MHz) and region-specific or global 4G LTE bands (700-2700 MHz). To ensure compatibility, please specify your country’s network frequency when ordering your multi sim gsm gateway from us.

How many SIM cards can the gateway handle, and can it rotate SIMs automatically?
Our gateway supports options from 16 up to 512 SIM cards, with each of the 16 ports controlling up to 32 SIMs. We offer both automatic and manual SIM rotation to maintain uninterrupted operation and backup, making it a flexible bulk sms and voice gateway solution.

Is the device suitable for bulk SMS campaigns and simultaneous voice calls?
Yes, the YX 16 Ports GOIP VoIP GSM Gateway is designed for concurrent bulk SMS sending and receiving alongside voice calls. This dual capability positions it as an ideal bulk sms and voice gateway for marketing and business communications.

Do you provide installation or technical support for setting up the 16 port GOIP gateway?
We assist customers with technical guidance upon request. Our team can help you deploy the 16 port goip gateway correctly in your network environment, ensuring SIP protocol configuration and SIM slot management meet your operational needs. Contact us for expert support.

1、Overview
VoIP GSM gateway (GoIP gateway) is a device that can reduce the cost of calling mobile networks from fixed telephone lines. It can route directly between IP, digital, analog, and mobile networks. GoIP gateways are increasingly being used by telephone operators to connect IP calls to mobile networks. In areas where fixed line services are unavailable or much more expensive than mobile costs, GoIP gateways are an irreplaceable alternative.

The following figure shows a basic topology of GP Gateway usage.

2、Product Brief
YX series GP Gateway is a multi-functional and high performance product, which is designed with advanced embedded technology. YX series is able to process traditional voice call service and internet data service. perfectly support G729a/b/e、G723.1、G.711 a/u law and iLBC codecs at the same time.
YX series GP Gateway please check the following table about the difference:

3、Appearance

                  

● 4/8/16/32 Antennas
● 1 USB Serial Port (Baudrate 115200)
● 1 Network Interface (RJ45)
● 1 Power Interface (DC 12V 3A/5A/7.5A/8A)
● 1 Power light
● 1 Reset Button
● 4/8/16/32/64/128/256/512 SIM card slots
● 4/8/16/32/64/128/256/512 LED lights

4、Special Features

● Support G729a/b/e,G723.1,G.711 A/U law, iLBC auto-selecting

● BO(Bandwidth Optimization)

● Proxy Encryption Solution for IP Block

● Support SIM Bank

● VPN(pptp)

● SIM Card Rotating

     ◆ SIM card check and switch rules:

        ◇ Accumulated Call Duration

        ◇ Accumulated Connected Calls

        ◇ Accumulated Calls

        ◇ Consecutive Failed Calls

        ◇ Consecutive No-Alert Calls

        ◇ Consecutive No-Answer Calls

        ◇ Consecutive No Carrier Calls

        ◇ Consecutive Short-Duration Calls

        ◇ Consecutive Fast-Alerting Calls Checking

        ◇ Consecutive Fast-Answer Calls CheckingGSM/CDMA/WCDMA/4G(LTE) VoIP/SMS Gateway

        ◇ Consecutive GSM Release Cause Checking

        ◇ Accumulated SMS Count Checking

        ◇ Accumulated Failed SMS Count Checking

        ◇ Consecutive Failed SMS Count Checking

● Station intelligent switching(By switching rules)

● ERMS(Easement Remote Management System)

● Port Inter-Calling

● Fake Ring back

● FAS shield

● Call waiting

● Call Duration Limitation for SIM Card/Single

● Dial Plan/Prefix Inward Translation/Intelligent Routing

● Web Browser: Firefox/Chrome /IE/Opera

5、Specification

6、Mobile Features 

● SMS Send, Receive and Forward(GSM/SIP/HTTP)

● SMS Inbox

● AT Command , USSD

● SMS Format: PDU/TXT

● PIN Code Management

● CDMA Delay Answer

● GSM Polarity Reversal

● Carrier Selection

● Caller ID Hidden(need SIM Card support)

7、Maintenance and Management 

● Multi-language Interface

● USB Serial COM

● Configuration Backup and Restore

● Support HTTP/TFTP Upgrade

● Call statistics: ASR,ACD,PDD

● WEB Remote Management System

● SMPP support

● HTTP Command

▼The following pictures are demo of the platform's interface setup and operation

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8、FAQ

 
Q4. Does GOIP, MOIP, or SMS modem support functions such as MMS, picture SMS, voice SMS, video calls, etc?