$620.00 - $820.00
Min. Order : 1 Piece

Multinational Anti reduce SIM blocking VOIP gateway 2G/3G/4G 8 port 32 gsm sim box

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Quick Details

Port: ShenZhen
Payment Terms: T/T,Western Union
Supply Ability: 1000 Piece/Pieces per Week
SIP specification: SIP/2.0 RFC3261 /Session Timer RFC402/ STUN
Warranty: 12 months
Place of Origin: Guangdong China
Support: IMEI Change/Call/Bulk SMS/SMPP/USSD
Model Number: ACOM508-32
Brand Name: Ejointech
Type: VoIP Gateway
Number of Channels: 8
Product name: VOIP gateway 2G/3G/4G 8 port 32 gsm sim box
Tech support: lifetime
VOICE codes: G729a/ b/ e, G723.1, G.711 A/ U law, iLBC
Frequency: GSM/WCDMA/LTE
Sim slots: 32
Packaging Detail: Blank carton package/Multinational Anti reduce SIM blocking VOIP gateway 2G/3G/4G 8 port 32 gsm sim box
Package Preview: https://sc04.alicdn.com/kf/HTB1MwalRxnaK1RjSZFtq6zC2VXa4.jpg_640x640.jpg
Shenzhen Ejoin Technology Co., Ltd.
Gold Supplier
Response Time
On-time delivery rate
US$ 190,000+
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Product Description

Multinational Anti reduce SIM blocking VOIP gateway 2G/3G/4G 8 port 32 gsm sim box 

ACOM508 series is able to process traditional voice call service and internet data service, which supports up to 8 concurrent calls.

Special Features

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

    Call Duration Limitation for SIM Card/Single

•Dial Plan/Prefix Inward Translation/Intelligent Routing

•Web Browser: Firefox/Chrome /IE/Opera

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)

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


2G/3G/4G models are separate and optional!

Product Name
Multinational Anti reduce SIM blocking VOIP gateway 2G/3G/4G 8 port 32 gsm sim box
Number of Channels
2G GSM:850/900/1800/1900 MHZ

3G WCDMA: 850/900/1800/1900/2100 MHZ

4G: FDD-LTE/TDD-LTE(4G Frequency difference frequencies for different areas,contact Skype:ejointech.m for confirm)
Network Protocols
SIP Specification
SIP/2.0 RFC3261
Session Timer RFC4028
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 LAN 10/100Base-T ethernet(RJ-45 connector)
1 Console(USB)
1 Power and 8 groups of card online and running status indicator
Power Supply
100-240VAC, 50 - 60 Hz IN, 12V/5A OUT
Operating Environment
Operating temperature: 0 - 50ºC
Operating humidity: 10 – 90%RH
12 Months
Voip Modem Series
1) Support 8/16/32 Channels, Up to 512 sim for auto sim switch to work based on different conditions.
2) 2G/3G/4G models all available.
3) Support work with Call Center Software, IPPBX, 3CX,Elastic,Asterisk, Vos,VPS, Freeswitch, Softswitch Cicso etc.
4) IMEI Change and Human Behavour feature for Anti-Sim Blockage
5) Offer Free Software and Firmware Version upgrade online
6) Free lifetime Tech Support                     
Web Management

1.Web UI Management Software inside For VoIP gsm gateways and SMS Modems
* IMEI change/base station change/auto sim
 switch etc

2.EJOIN Free Terminal Centralized Management System For Monitoring all status
*CDR checking/SMS query/sim balance/sim status/configuration and new firmware upgraded remotely

3.EJOIN Free SMS Software Compatible With Ejoin VoIP Gateway&HTTP SMPP SMS modem

*support upload bulk contacts and contents in excel format for bulk sms sending, receiving and forwarding online

Our Sevice
Packing & Delivery

Once we get your order,we can find the lowest shipping cost for you via DHL,Aremax,FedEx,UPS,TNT,EMS etc and offer special packing for custom clearence.

Our Company

Shenzhen Ejoin Technology Co.,Ltd is a professional developer and manufacture specialized in VoIP hardware and VoIP solution for more than 15 years. 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.
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.
Customer satisfaction is our eternal pursuit. We are looking forward to creating a brighter future with all our customers!

Contact Us

Quotation or other questions Please feel free to contact me as below:


Skype: ejointech.z

WhatsApp: +8615813741823