Name: YX 4G LTE GoIP & VoIP Gateway 16/32 ports for 128/256 eSIM and Voice Call and SMS
Brand: YX SHOP
Price: 1366.2 USD
Availability: InStock
Rating: 5.0 (4 reviews)

GOIP Gateway with eSIM (eSIM optional) It links mobile cellular network to VoIP systems via SIP. It supports both physical SIM cards and eSIM profiles two independent working modes, and bulk voice calls and SMS , It works for call centers, supports VPN connection and common audio codecs to run stable voice communication.

● 16/32 channels work at the same time – Bulk SMS and Voice
● Dual modes: physical SIM and eSIM, web interface switch
● 16/32 SIM+128/256 eSIM, each port 1 SIM and 8 eSIM profiles
● YX Platform software – easy to manage calls, SMS, and billing
● Supports USSD, IMEI Change, HTTP API, SMPP, VOLTE, etc
● Support SMPP 3.4 and HTTP API for easy system integration

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Please select the information you want X

Ports:

GP 16 Port 16 sim (SMS and Voice)

GP 32 Port 32 sim (SMS and Voice)
4G MODEL:

EC25 / EG91 (Region Specific Global Coverage)
eSIM:

With eSIM

Without eSIM
Price Tier:

1 Unit Price (Tip: Qty 1 | Purchase One)

2+ Units Price (Tip: Min Qty 2 | No Shipment below 2)
Package appearance:

Original casing (e.g.)

Power amplifier casing (e.g.)
Power Adapter:

EU

CN/AU

CN

US

UK

Quantity:

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Description
Product Details
Frequency band
Package

Brand Name	YX
Number of Channels	16 channels 16 SIM slots, 32 channels 32 SIM slots
Frequency	GSM, CDMA, WCDMA, LTE (When purchasing 4G equipment,If unsure,please confirm the frequency band and module with the account manager!)
Module	EC25 (Please refer to the "Frequency Band" interface for specific information)
Function	SIP Voice / STK / AT Command / TCP/ IP / Data / SMS / VoLTE / IMEI / MMS / Email / GPRS / GPS / USSD / eSIM(optional) (Please refer to the "Product Details" interface for specific information)
eSIM mode	Enable eSIM to use the device as a 16 port 16 SIM gateway, 8 eSIMs per port working alternately (Total 128 eSim) Enable eSIM to use the device as a 32 port 32 SIM gateway, 8 eSIMs per port working alternately (Total 256 eSim)
SIP Specification	SIP/2.0 RFC3261 Session Timer RFC4028 STUN, DTMF, RFC2833
SMS Specification	SMPP3.4, HTTP, API, EIMS
Network Protocols	DHCP, PPPoE, Static IP, VPN
Telephony Features	Hot-line call ,Dial plan, Speed dial, Phone book,CDR, LCR, White/Black list
Telephony Signaling	DTMF tone dectection/generation DTMF relay: in-band, RFC 2833 and SIP info Call forward:unconditional, no answer and busy N-way conferencing Caller ID display/generation, Mobile Number Portability
Voice Capability	Voice codecs:G729a/b/e,G723.1,G.711 A/U law, iLBC Echo cancellation Silence suppression & detection（VAD, CNG） Adaptive jitter buffer Volume adjustable IVR customized
Number of Ports	1 WAN 10/100Base-T Ethernet(RJ-45 connector) 1 Console(USB)
LED	1 Power and 16/32 groups of card online and running status indicator
Power Supply	100-240VAC, 50 - 60 Hz IN, 12VDC 3A/5A/7.5A/8A Out
Operating Environment	Operating temperature: 0 - 50ºC Operating humidity: 10 – 90%RH
Warranty	12 Months
Support	With instruction manual and technical support (Also has SMS and voice services, please contact us)
Shipping method	Support DHL, UPS, FEDEX, EMS, 4PX Cainiao standard logistics and dedicated lines (some countries have dedicated lines logistics, Specific consultation with customer service) Tip: (1) Express delivery is faster than dedicated lines, but customers need to handle customs clearance and tax payment, and there will be logistics trajectory updates throughout the process. (2) Dedicated line logistics (DDP) is slower, but includes customs clearance and tax payment, and is delivered directly to the home. Suitable for customers who do not want to handle customs clearance.
Payment method	Support payment methods such as USDT, PayPal, credit card, Bank transfer, etc (Bank transfer only for company payments) Please consult customer service for USDT address,Other payment methods can be redirected to the checkout page for online payment
Ordering Process	Payment for the product you need to order, we will arrange for stock testing after confirming the accuracy of the delivery information with you. We expect to arrange shipment within 2 days and provide you with package picture and logistics tracking number for tracking. Customer service will send message to remind you of tax payment and logistics delivery. If you need technical support after receiving the goods, please leave a message to our customer service personnel, and we will arrange for a technician to assist
Tip	Use power amplifier or switchboard as the appearance will make customs clearance easier and reduce tariffs
Customer service contact information	Whatsapp: +8615220722893 Emai: yx@yxinternet.com Telegram: @YXwendy Teams: yuexun@yx19999.net

Built for Scalable Voice and SMS Needs
The YX GOIP 4G LTE 16 Port Gateway combines voice call and SMS capabilities into a single, high-efficiency unit. With 16 SIM slots and support for 128 eSIMs；
The YX GOIP 4G LTE 32 Port Gateway combines voice call and SMS capabilities into a single, high-efficiency unit. With 32 SIM slots and support for 256 eSIMs
it’s a powerful solution for users in need of the best sms gateway for continuous, high-volume messaging and call services.

Broad Compatibility with Major Networks
Engineered to perform on global carriers including verizon sms gateway, att sms gateway, and services like gmail sms gateway, this device serves as a flexible and reliable sms gateway provider across multiple use cases—from bulk alerts to international communications.

Advanced Control Through AT Commands
Designed for professional and business use, the gateway supports AT commands for custom routing, automated sending, and system monitoring. Ideal for companies needing the best sms gateway provider with advanced management options and VoIP integration.

Optimized for Ease of Use
The intuitive web interface and plug-and-play setup make this device accessible for small teams, IT consultants, and business owners looking to buy sms gateway systems without complex onboarding.

Engineered for Stability and Longevity
Featuring industrial-grade components, the gateway ensures stable uptime and reliable performance. It's the dependable choice for anyone requiring a secure and high-output sms gateway best device.

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.
YX 4G LTE GoIP & VoIP Gateway 16 ports for 128 eSIM and Voice Call and SMS

Product Advantages

Dual Functionality：Handles voice and SMS with ease—an efficient sms gateway provider for diverse needs.
SIM + eSIM Capacity：Includes SIMs and eSIMs, making it a flexible best sms gateway choice.
Network Compatibility：Works with verizon sms gateway, att sms gateway, and more.
Remote Control Ready：AT command support boosts control for best bulk sms provider setups.
Easy to Use：Simple setup and dashboard—perfect for users looking to buy sms gateway hardware fast.

Key Features:
● eSIM or SIM Slots: For massive SMS/call throughput.
● 4G LTE Global Support: GSM/CDMA/WCDMA/LTE compatibility (confirm bands pre-order).
● Auto-SIM Switching: Rotate eSIMs/SIMs to bypass carrier limits effortlessly.
● SMPP 3.4 & SIP Ready: Integrate with CRMs, APIs, or custom tools.
● Military-Grade Security: VPN/PPPoE encryption and white/blacklist filtering.

Why It’s a Must-Buy:
→ Zero Monthly Fees: Pay only for SIMs/eSIMs.
→ Call Analytics: Track costs via CDR/LCR reports.
→ Plug-and-Play: Ethernet/USB connectivity for instant setup.

Perfect For:
● Telecom operators & SMS aggregators
● High-frequency marketing (e.g., flash sales)
● IoT hubs sending real-time alerts via SMS
● Call centers needing VoIP-SMS fusion

↓ 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.

voip gateway panel eSIM open display
voip gateway panel eSIM Status voip gateway panel eSIM Setting

Tech Specs:
Network: 4G LTE/3G/2G
Ports: 1 WAN/USB
Protocols: SMPP 3.4, SIP, HTTP, VPN, PPPoE
Codecs: G.711, G.729, iLBC (HD voice clarity)
Warranty: 12 months

Start in 3 Steps:
1. Connect via Ethernet/USB.
2. Load SIMs and eSIM profiles.
3. Launch Campaigns via SMPP/SIP!

24/7 Reliability | Free API Toolkit | Global Compliance

Includes free SIP/SMPP tools and 24/7 priority support.

Need high-volume communication? This gateway is your all-in-one solution.
Whatsapp: +8615220722893
Emai: yx@yxinternet.com
Telegram: @YXwendy
Teams: yuexun@yx19999.net

↓ User Platform Interface Display of VoIP and SMS Gateway Software

↓ VoIP and SMS gateway connection demonstration

↓ Unscrew the power amplifier casing

↓ Unscrew the switch casing

About Us

YX International 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, YX International 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

Can the YX 4G LTE GoIP & VoIP Gateway handle bulk SMS campaigns?
Yes, our 4G VoIP gateway supports up to 128 or 256 eSIMs per device, enabling high-volume SMS sending. It is designed specifically for scalable bulk SMS operations, ensuring smooth management of multi-port messaging campaigns.

Do you provide support for installing and configuring the gateway?
We offer comprehensive technical support to help with the setup and configuration of the YX 4G LTE GoIP gateway provider system. Our team assists with network integration, SIP settings, and troubleshooting to ensure reliable operation.

Is the gateway compatible with global LTE frequency bands?
Our device uses EC25/EG91 modules tailored for region-specific frequency bands and the EG25-G module for global full frequency coverage. This ensures compatibility with major LTE networks worldwide for voice and SMS functions.

Can this gateway integrate with IoT SIM cards and manage multiple voice protocols?
Yes, the YX 4G LTE VoIP gateway efficiently supports IoT SIM cards and eSIMs with protocols like SIP/2.0, SMPP, and HTTP API. It also includes voice features like echo cancellation and multiple codecs for clear communication quality.

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.

This linked product with eSIM，eSIM (embedded SIM) is a tiny digital chip built into devices (like phones, tablets, or gateways). By applying to the operator for eSIM data to be written into the device's blank card chip, all functions of the physical SIM card are achieved; that replaces physical SIM cards.

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 with eSIM please check the following table about the difference:

Model Number	port	Total sim capacity	eSIM capacity	Frequency
YX GOIP 16-16	16	16	128	4G (LTE)
YX GOIP 32-32	32	32	256	4G (LTE)
YX GOIP 64-64	64	64	512	urrently unavailable, development in progress

3、Appearance

● 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
● 16/32 SIM card slots
● 16/32 LED lights
● 128/256 eSIM

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

Number of Channels	16 channels 16 SIM slots 128 eSIM 32 channels 32 SIM slots 256 eSIM
Frequency	GSM, CDMA, WCDMA, LTE(Purchasing 4G equipment, please confirm the frequency band and module with the account manager!)
SIP Specification	IP/2.0 RFC3261 Session Timer RFC4028 STUNS
SMS Specification	SMPP3.4
Network Protocols	DHCP/PPPoE/VPN(pptp) NTP Telnet/HTTP/FTP/TFTP Encryption:Security,VOS2000,RC4,XOP.Base64
Telephony Features	Hot-line Send SMS ,Dial plan, Speed dial, Phone book, CDR, LCR, White/Black list
Telephony Signaling	DTMF tone dectection/generation DTMF relay: in-band, RFC 2833 and SIP info Call forward: unconditional, no answer and busy N-way conferencing Caller ID display/generation, Mobile Number Portability
Voice Capability	Voice codecs:G729a/b/e,G723.1,G.711 A/U law, iLBC Echo cancellation Silence suppression & detection（VAD, CNG） Adaptive jitter buffer Volume adjustable IVR customized
Number of Ports	1 WAN 10/100Base-T Ethernet(RJ-45 connector) 1 Console(USB)
LED	1 Power and 16/32 groups of card online and running status indicator
Power Supply	100-240VAC, 50 - 60 Hz IN, 12VDC 3A/5A/7.5A/8A Out
Operating Environment	Operating temperature: 0 - 50ºC Operating humidity: 10 – 90%RH
Warranty	12 Months

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

8、FAQ

Q1. Does GOIP or MOIP support custom calling number/sender ID when making phone calls or sending text messages?

A：The device uses a SIM card, which naturally displays the SIM card number when making calls or sending text messages. This is determined by the SIM card itself and the SIM card operator, and generally does not support custom calling numbers/sender IDs. In VOIP and network SMS services, only the operator's routing (CLI and direct connection) may be supported!

Q2. Does GOIP or MOIP support detecting surrounding mobile phone information, listening to surrounding calls, tracking/tracing mobile phones/calls/SMS, IMSI Catcher and other detection functions?

A：This type of feature has no connection with our product and is not supported!

Q3. Does GOIP or MOIP support wifi or multi wifi functions to provide data internet access and other functions?

A：The functions related to wifi/data internet are not related to any of our devices and are not supported!

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

A：SMS modems can support MMS (customers need to have their own software support, we do not provide MMS software), and the latest version of YX GOIP/MOIP can also support sending MMS. Other products do not support it

Q5.Does GOIP support the function of hiding the caller when making phone calls?

A：The device has a setting function to hide the caller, but it requires the SIM operator to support this function at the same time.

Q6. Does GOIP and modem have API?

A：The GOIP/MOIP of YX series has HTTP APIs for sending/receiving SMS and USSD, and supports customer developed software to call through HTTP; DBL's GOIP does not have an API that can be directly used, but if the client has their own server, after installing a GOIP SMS sending server software, they can use the SMS HTTP API; The modem does not have an API.

Q7. What devices can make voice group calls?

A：SMS modems do not support direct audio access and cannot play voice after calling out. GOIP can support it, but GOIP cannot automatically call out and requires the call center to provide functions for calling out and playing voice

Q8. Is there a device that supports receiving and forwarding SMS messages?

A：SMS modems can receive text messages, but they do not support forwarding. Additionally, the software we provide does not support checking which port received the messages

YX GOIP/MOIP can receive information and forward it to email/HTTP address/SIP server/other phone numbers or HTTP API directly from the device (Commonly used methods include email or HTTP API retrieval)

Q9. Can the device support international roaming? What should be noted?

A：1. The SIM card needs to be able to roam to the target country. 2. It is necessary to understand the frequency band of the target country, and the device needs to be matched with the frequency band of the target country (if there are too many frequency bands in the target country, it can also be determined which operator in the target country can provide roaming signals for the SIM card, and the device needs to match the frequency band of the operator that provides roaming signals)

Q10. What is the SMS sending speed for MOIP/GOIP?

A：GOIP/MOIP(2G/3G/4G): 720 per port per hour (the above standard testing environment may vary depending on the device environment)

Q11. Does SIMBank support connecting to devices other than GOIP and MOIP, do they have APIs, and can different brands of SIMBANK and GOIP be used?

A：SIMBank does not support connecting to devices other than GOIP and MOIP, there is no API, and different brands of SIMBANK and GOIP cannot be used

Q12. How can SIMBANK connect to GOIP/MOIP and card the device?

A：SIMBANK generally requires the use of the software SIM Server installed on the server to manage, connect, and allocate cards, in order to achieve remote card access. If there is no server, one needs to be rented, and the system requires CentOS 5. X or 6. X

Q13. What are the ways to send/receive SMS for YX series GOIP/MOIP and DBL?
A: (1) Login to the device page to send/receive directly;
(2) Directly connect to the SMS platform (only support EIMS/IMFS) to send/receive;
(3) use HTTP API to send/receive directly (customers may need their own software/platform support);
(4) if the customer has a public IP, the customer can set the public IP to GOIP, and then send SMS after docking with SMPP SMS platform;
DBL's no API can only use the page to send or use the server supporting SMS sending software to send.

Q14. Can GOIP or MOIP use the data traffic inside the SIM card to give users access to the Internet?
A: No, we don't have this kind of equipment.

Q15. Difference between YX GOIP and DBL GOIP in terms of sending and receiving SMS.
A: DBL can only send and receive SMS in the device (SIM reason, the maximum number of messages received is 50), or the customer has its own server to install information management software (can send and receive, unlimited number of SMS).
YX can send and receive SMS in the device (SIM reasons to receive information up to 50) or you can use our free ETMS management software (can be received, but sent to need to use another EIMS2, unlimited number of SMS), if the customer has the ability, the device also has a HTTP API can be accessed to their own development of the program (support for sending and receiving)

Q16. Can GOIP/modem be used in XX countries (or a certain operator)?
A: The product has nothing to do with the use in which country or which operator, as long as the frequency band of the device can match the local (or the operator to be used), it can be used!

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:

Model Number	Channel	Sim capacity in each channel	Total sim capacity	Frequency(optional)
YX GOIP 4-4	4	1	4	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 8-8	8	1	8	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 8-32	8	4	32	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 16-16	16	1	16	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 16-64	16	4	64	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 16-128	16	8	128	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 16-256	16	16	256	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 16-512	16	32	512	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 32-32	32	1	32	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 32-64	32	2(1 Big+1 Small)	64	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 32-128	32	4	128	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 32-256	32	8	256	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 32-512	32	16	512	GSM / CDMA / WCDMA / 4G(LTE)
YX GOIP 64-64	64	1	64	Currently unavailable, development in progress
YX GOIP 64-256	64	4	256
YX GOIP 64-512	64	8	512

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

Number of Channels	4 channels 4 SIM slots 8 channels 8/32 SIM slots 16 channels 16/64/128/256/512 SIM slots 32 channels 32/128/256/512 SIM slots
Frequency	GSM, CDMA, WCDMA, LTE(When purchasing 3G or 4G equipment, please confirm the frequency band and module with the account manager!)
SIP Specification	IP/2.0 RFC3261 Session Timer RFC4028 STUNS
SMS Specification	SMPP3.4
Network Protocols	DHCP/PPPoE/VPN(pptp) NTP Telnet/HTTP/FTP/TFTP Encryption:Security,VOS2000,RC4,XOP.Base64
Telephony Features	Hot-line Send SMS ,Dial plan, Speed dial, Phone book, CDR, LCR, White/Black list
Telephony Signaling	DTMF tone dectection/generation DTMF relay: in-band, RFC 2833 and SIP info Call forward: unconditional, no answer and busy N-way conferencing Caller ID display/generation, Mobile Number Portability
Voice Capability	Voice codecs:G729a/b/e,G723.1,G.711 A/U law, iLBC Echo cancellation Silence suppression & detection（VAD, CNG） Adaptive jitter buffer Volume adjustable IVR customized
Number of Ports	1 WAN 10/100Base-T Ethernet(RJ-45 connector) 1 Console(USB)
LED	1 Power and 4/8/16/32/64groups of card online and running status indicator
Power Supply	100-240VAC, 50 - 60 Hz IN, 12VDC 3A/5A/7.5A/8A Out
Operating Environment	Operating temperature: 0 - 50ºC Operating humidity: 10 – 90%RH
Warranty	12 Months