Shenzhen Ejoin Technology Co., Ltd.

Add : 3rd Floor, Wanyuan Business Building,Liuxian NO.2 Road ,71 Block , Bao an District. Shenzhen City, P.B China
 Tel : +86 755 85245166 Fax : +86 755 85245122
Copyright © Shenzhen Ejoin Technology Co., Ltd.2017. All Rights Reserved | 粤ICP备15045977号 



EjoinTech is a professional developer and manufacturer of VoIP products. EjoinTech provides ACOM brand VoIP communication devices and solutions.

ACOM532-32/128 VoIP Gateway
EjoinTech is a professional developer and manufacturer of VoIP products. EjoinTech provides ACOM brand VoIP communication devices and solutions. And we also offer customized products and OEM service. They are a cost-effective gateway for SOHO, SMEs and system integrators and it also opens up new revenue generating opportunities for service providers. 
ACOM532 series is able to process traditional voice call service and internet data service. Compare to the ACOM508 GSM/CDMA/WCDMA series VoIP Gateway,ACOM532 series adapt new hardware and software structure, which supports up to 32 concurrent calls.

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
 SIM Card Rotating(ACOM532-128)
 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




ACOM 532-32/128

Number of Channels

32 channels


GSM: 850/900/1800/1900MHz



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 LAN 10/100Base-T ethernet(RJ-45 connector)

1 Console(USB)


1 Power and 32 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

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

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