Gateway (RoIP-302M) (RoIP-102)

Specifications
RoIP (Radio over IP) Intercom system
1. SupportVLAN &QoS
2. Cross network has 3 PTT interfaces
3. Rdiao, VoIP, GSM Public Annouom
RoIP-302M Cross-Network RoIP Gateway/Portable Radio/Intercom System(Radio over IP)

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

Basic Features
1. Two RJ-11 FXS port for traditional phone set or PBX's trunk line
2. Support three PTT port
3. LEDs for Power, Ready, Status, WAN, PC, FXS
4. Call Forward, Call Hold, Call Transfer
5. Dial Plan
6. Caller ID

Enhanced Features
1. Dynamic selection of codec
2. Advanced jitter buffer
3. Automatic traversal of NAT and firewall
4. VLAN / Qos
5. Router
6. Echo cancellation for Speakerphone
7. Comfort noise generation (CNG)
8. Voice activity detection (VAD)
9. Auto provisioning (requires auto provisioning server)
10. On line firmware upgrade
11. Multi-language support: English and Chinese

Supported Standards
1. ITU: H. 323 V4, H. 225, H. 235, H. 245, H. 450
2. RFC 1889 - RTP/RTCP
3. RFC 2327 - SDP
4. RFC 2833 - RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
5. RFC 2976 - SIP INFO Method
6. RFC 3261 - SIP
7. RFC 3264 - Offer/Answer model with SDP
8. RFC 3515 - SIP REFER Method
9. RFC 3842 - A Message Summary and Message Waiting Indicator
10. RFC 3489 - Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)
11. RFC 3891 - SIP "Replaces" Header
12. RFC 3892 - SIP Referred-By Mechanism
13. Draft-ietf-sipping-CC-transfer-04 - Session Initiation Protocol Call Control - Transfer
14. Codec: G. 711 (A/µ Law), G. 729A/B, G. 723.1
15. DTMF: RFC 2833, In-band DTMF, SIP INFO

Which group can benefit from RoIP?
Adio Service Operators who would like to expands their geographical coverage.
Radio User who would like to make and receive calls from the telephone networks.
System administrators who would like to monitor and maintain good control over the existing radio networks.

System Integrator who would like to build or deploy a reliable voice communication network in timely manner