Guangdong, China
Business Type:
Trading Company
Number of Employees:
Year of Establishment:
Management System Certification:
ISO 9001, ISO 9000
Average Lead Time:
Peak season lead time: within 15 workday
Off season lead time: within 15 workday
OEM/ODM Service
Sample Available
Russian / Portuguese / Spanish Speaker

Protable Radio, Radio Over IP, Talkback manufacturer / supplier in China, offering VoIP Gateway RoIP 302m Cross Network Gateway, DBL SIM Bank32 Remote Controller SIM Server, Remote 32 SIM Cards SIM Bank SMB32 and so on.

Gold Member Since 2010
Audited Supplier

VoIP Gateway RoIP 302m Cross Network Gateway

Get Latest Price
Min. Order: 1 Piece
Production Capacity: 10, 000 Unit/Month
Transport Package: Packing Box Dimension:36*22*7
Payment Terms: T/T, Western Union, Paypal
Usage: Telephone, Computer, Workstation, Server, Mobile phone, Laptop
Type: Wireless
Support Network: GSM
Color: White
Input: 110/220vac
Output: 12vdc, 2A

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Basic Info

Model NO.: roip302
Warrently: One Year
Trademark: DBL
Origin: Guangzhong, China

Product Description

VOIP Gateway ROIP 302M Cross Network Gateway

RoIP302M Cross-Network Gateway Radio /GSM/VoIP/SIP Server


The fundamental of RoIP(Radio over IP)technology is to convert the audio and PTT signals in a radio terminal into IP packets and then transmit the data via the IP networks. The challenge in this technology is to insure that the audio is transmitted in real time and the PPT control signal is transmitted immediately and reliably. The radio range is general limited by the restricted transmitting power, the antenna sensitivity, and other environmental factors. 

Key Features 
Open Standard VoIP Protocols (IETF SIP V2) 
Two 10/100 Ethernet for WAN / LAN connections 
Supply dynamic DNS service 
Speech quality ensured by QoS at the Ethernet and IP layers and comprehensive jitter buffer 
Line Echo Cancellation 
VLAN and QoS support 
NAT Transversal and Router functions 
Support IP voice stream to via a recording server 
Highly stable embedded Linux operating system in high performance ARM 9 Processor 

Basic Features 
Two RJ-11 FXS port for traditional phone set or PBX's trunk line 
Support three PTT port 
LEDs for Power, Ready, Status, WAN, PC, FXS 
Call Forward, Call Hold, Call Transfer 
Dial Plan 
Caller ID 
Enhanced Features 
Dynamic selection of codec 
Advanced jitter buffer 
Automatic traversal of NAT and firewall 
VLAN / Qos 

Echo cancellation for Speakerphone 
Comfort noise generation (CNG) 
Voice activity detection (VAD) 
Auto provisioning (requires auto provisioning server) 
On line firmware upgrade 
Multi-language support: English and Chinese 
VoIP Gateway RoIP 302m Cross Network Gateway

VoIP Gateway RoIP 302m Cross Network Gateway
VoIP Gateway RoIP 302m Cross Network Gateway

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