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Ejointech 4g lte voip gateway modem 16 port 256 simcards rotation with free tech support

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Quick Details

Payment Terms: T/T,Western Union,PayPal
Brand Name: Ejoin
SIP Specification: SIP/2.0 RFC3261
Type: VoIP Gateway
Warranty: 12 Months
Place of Origin: China
Number of Ports: 1 WAN 10/100Base-T Ethernet(RJ-45 connector) 1 Console(USB)
Network Protocols: Encryption:Ejoin,VOS2000,RC4,XOP.Base64
Color: black
Channel: 16
Frequency: LTE
Model Number: ACOM516L-256
Voice codecs: G729a/b/e,G723.1,G.711 A/U law, iLBC
Power Supply: 100 - 240V, 50 - 60 Hz
Packaging Detail: Standard carton Package & OEM Package
Shenzhen Ejoin Technology Co., Ltd.
Manufacturer, Trading Company
Response Time
On-time delivery rate
US$ 280,000+
R&D staffs
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Product Description


ACOM516-256 VoIP Gateway is a multi-functional and high performance product, which is designed with advanced embedded technology and every channel has 8 sim slots. ACOM516-256 is able to process traditional voice call service and internet data service and adopt new hardware and software structure, which supports up to 16 concurrent calls.

Description: device with 16 port 256 sim cards,one port has 16 sim, and they work by turn
16 channels with 256 sim. Each channel has 16 sim and they works by automatic switching
Frequency :GSM/WCDMA/LTE
SMS Sending Speed:10-20 sms per minute
HTTP-API: support USSD/AT Command
difference frequencies for different areas.
Contact Joan ( Skype: ejointech.f) for confirm.

Mobile Features:

 SMS Send, Receive and Forward(GSM/SIP/HTTP)
 SMS Inbox
 AT Command , USSD
 PIN Code Management
 CDMA Delay Answer
 GSM Polarity Reversal
 Carrier Selection
 Caller ID Hidden(need SIM Card support)

Maintenance and Management:

 Multi-language Interface
 USB Serial COM
 Configuration Backup and Restore
 Support HTTP/TFTP Upgrade
 Call statistics: ASR,ACD,PDD
 Ejoin Remote Management System

Special Features:

 Support G729a/b/e,G723.1,G.711 A/U law, iLBC auto-selecting
 EBO(Ejoin Bandwidth Optimization)
 Proxy Encryption Solution for IP Block
 Support SIM Bank
 VPN(pptp)
 SIM Card Rotating(ACOM516-256)
 Solution to solve the SIM card blocked by:
 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
 Station intelligent switching
 ERMS(Ejoin Remote Management System)
 Port Inter-Calling
 Fake Ring-back
 Call Duration Limitation for SIM Card/Single
 Dial Plan/Prefix Inward Translation/Intelligent Routing
 Web Browser: Firefox/Chrome /IE/Opera




ACOM 516-256

Number of Channels

16 channels 256 sim slots



SIP Specification

SIP/2.0 RFC3261

Session Timer RFC4028


Network Protocols





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)



1 Power and 16 groups of card online and running status indicator

Power Supply

100-240V AC, 50 - 60 Hz IN, 12V/5A OUT

Operating Environment

Operating temperature: 0 - 50ºC

Operating humidity: 10 – 90%RH


12 Months

VoIP Solution

Ejoin cloud system ,with all devices make a solution

Support SIM bank, with SIM server, SIM bank can easily communicate with gateways via IP network. In this way, we can manage the SIM cards remotely.

Connect the device to the SIP ,run your business automatic
SIP Setting 

SMS receiving/bulk sending, AT command compatible

Our Service

Ejoin Remote Management System

ETMS: For central management of all your ejoin gateways in one page, with auto-recharge system embedded in
EIMS3: For SMS termination
ESPS: For manage gateway and simpool, and set your own SIM assignation strategy

Contact Joan ( WhatsApp: +8613755304671) for live system show

Pre-Sales Service

* Online demo device to login( Contact Skype: ejointech.f)
* Inquiry and consulting support
* View our Factory.

After-Sales Service

* Technical team will help remotely by Team Viewer
* One year warranty
* Free lifetime technical support

Our Company

We provide high quality 2G/3G/4G VoIP gateway, SMS modem, Analog gateway , Media gateway, IP phones and Value added applications as well as specialized and Flexible VoIP communication solutions based-SIP,OEM and ODM services for carriers and providers around the world.

R&D department
Ejointech 2G/3G/4G VoIP gateway are based on industry standard protocols, which are fully compatible with Asterisk and well known VoIP device providers (Cisco,Huawei etc), for deploying flexibly many communication solutions, to bring deeper clarity and better end-user communication experience.

Ejoin is awarded the National High-Tech Enterprise and Shenzhen High-Tech Enterprise in 2016 , with proprietary intellectual property rights on hardware and software.National High-Tech Enterprise

Our company 

Company exhibition in the world

Packing & Delivery
16 antennas
1 network cable
1 power adaptor
1 USB cable
1x 12 months warranty + 1x Free lifetime technical support
contact me
24-hours free contact Joan
Whatsapp/Tel/Wechat: +86 13755304671