November 07, 2005
VoWLAN-2
The Seamless Converged Communication Across Network (SCCAN) is an industry organization supporting the emergence of open specifications for technologies that facilitate seamless converged communications. According to SCCAN, the future of VoWLAN is bright but it requires heavy investment.
A VoWLAN setup as envisaged by SCCAN includes a WLAN gateway, an access point and PBX from Avaya required for connecting to the CN620 handset from Motorola. The W310 WLAN Gateway with W110 WLAN access point is a wireless controller. Proxim resells it through Avaya. W310 WLAN Gateway is a 16-port Ethernet switch that powers the access points connected to it. The PBX for the system is provided by Avaya. It consists of media servers, module media gateways, and Communication Manager software. The Communication Manager software is compatible with SIP call processing and is capable of handling more than 700 enterprise telephony features. The CN620 costs $ 720 and weighs as less as 5.2 ounces. It has two radios and six antennas inside. It has an 800-mAH battery and is capable of eighty hours of standby and three hours of talk-time. The handset offers Wi-Fi on 2.4- and 5-GHz frequencies.
The Wireless Services Manager (WSM) offered by Motorola operates on Solaris and integrates VoIP and cellular networks. The organizations that are making an effort to develop VoWLAN include IEEE 802.21, which is concentrating on a Media Independent Handover (MIH) support for networks such as wired and wireless 802 networks. MobileIGNITE is a group comprising SIP and wireless infrastructure vendors among others. It releases pretested products in the market. The MobileIGNITE program was initiated by BridgePort, which is a mobile convergence vendor. UMA, which stands for Unlicensed Mobile Access, is made up of companies such as Alcatel, BT, Ericsson, etc. UMA is not based on SIP and concentrates on enabling traditional mobile technology to integrate with IP networks.
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