Ejointech 4G LTE 32-Port VoIP Gateway GSM Module SIP Gateway with 128 SIM Slots and VoIP Gateway Price - [ACOM532L-128]
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VoIP Gateway is a multi-functional and high performance product, which convert GSM network to VoIP.It supports mutiple concurrent lines.It is widely used in call center, enterprise communication,sim active, sms verify code, sms marketing, automated appointment reminder service,sim recharge and corporate sms,veryfication sms,wallet payment system etc.
Specifications
Model | ACOM532L-128 |
Frequency Bands | Global Network Compatible |
SIP Specification |
SIP/2.0 RFC3261 Session Timer RFC4028 STUN |
Network Protocols |
DHCP/PPPoE/VPN(PPTP/Open VPN) NTP Telnet/HTTP/FTP/TFTP Encryption:Ejoin,VOS2000,RC4,XOP.Base64 |
Telephone |
Hot-line call ,Dial plan, Speed dial, Phone book, CDR, LCR, White/Black list |
Telephony Signaling |
DTMF tone detection/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 32 card online and running status indicator |
Power Supply | 100-240VAC, 50 - 60 Hz IN, 12V/8A OUT |
Operating Environment |
Operating temperature: 0 - 50ºC Operating humidity: 10 – 90%RH |
Net weight | 3.5KG |
Dimension | 44x22x4.5cm |
Warranty | 12 Months |

32 Ports 128 sim voip gateway
The Ejointech ACOM532L-128 VoIP Gateway offers a complete range of solutions, supporting 32 ports and up to 128 SIM cards. With advanced features, it seamlessly connects mobile and VoIP networks, making it perfect for businesses, multi-site organizations, and areas with limited landlines.
Unlock Seamless Connectivity and Advanced Voice Solutions
Boost efficiency and save time with seamless voice solutions and fast, reliable connectivity for your needs.

Main Features
- 📱 4 SIM slots per channel
- 🔢 32 ports / 128 SIM slots
- 📶 VoLTE Enjoy high-quality voice services over LTE
- 🔌 Auto SIM Rotation- Automated SIM card rotation ensures uninterrupted service.
- 🔄 Hot swappable SIM cards
- 🛠️Flexible SIMs allocation
- 📲 SMS API for bulk SMS application
- 📧 SMS Efficiently manage SMS sending and receiving, ideal for communication needs.
- 🖥️ SIP v2.0, RFC3261

Friendly-Use Software
- Intuitive Web Interface
- Global Remote Access
- System Log
- Configuration Backup&Restore
- Advanced Commands
- CDR/Call Statistics Details
- Credit Limit | Billing Management
- Human Behaviour Features
SIP v2.0, RFC3261
Codecs Supported: G.711A/U, G.723.1, G.729AB
Echo Cancellation
Signaling & RTP Encryption
Mobile-to-VoIP & VoIP-to-Mobile Calling
Port and Port Group Configuration
White/Black List Management
PSTN/VoIP Hotline Support
Abnormal Call Monitoring
Call Forward
Billing Mangement
Support to work with SimBank
SMS Features
BULK SMS/MMS
HTTP API & SMPP Integration
SMS to Email
AT / USSD Command
Balance Check
Human-like Operation Simulation Feature
IMEI Modification
Inter-Port Calling
Inter-Port SMS Messaging
Switch Base Station
Internet Browsing