Device Profile: Planet SIP-50 VoIP proxy server

By Linux Devices
2005-06-09

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Taiwanese network equipment manufacturer Planet used embedded Linux to build a small VoIP proxy server that supports 50 concurrent users. The SIP-50 is a standalone SIP-compliant proxy server with NAT traversal capabilities that can connect public and private VoIP networks, Planet says.

The SIP-50 supports 200 registered, and 50 simultaneous users

According to Planet, the SIP-50 provides SIP client registration, authentication, and administration for all SIP compliant endpoints, including gateways, IP phones, and PC clients. The device complies with SIP 2.0 (session initiation protocol, RFC3261), the company says.

The SIP-50 offers NAT traversal with automatic NAT detection and configuration, Planet claims. These capabilities enable it to route calls between devices on different VoIP networks, including mixed public and private network environments.

The SIP-50's NAT support enables more flexible VoIP deployments, Planet says

Additional features include support for Radius authentication and standard telephony features such as client-based call transfer, call waiting, call hold, 3-way conferencing, and call forwarding.

What's under the hood?

The SIP-50 is based on an Intel IXP425 network processor, running at an unspecified clock rate. The system boots its embedded Linux OS from 16MB of NOR Flash, and runs in 128MB of RAM. I/O includes a serial port, as well as a single 10/100 Ethernet port.

The device includes a small LCD display and keypad, and can also be configured through console and Web interfaces. Additionally, it supports SNMP management.

The SIP-50 is based on a 2.4-series Linux kernel, along with a variety of open source software, including busybox and MySQL.

Additional details are available on the Planet website.

Availability

The SIP-50 is available from distributors such as Idreus, priced at $1,100.

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