Merging WiFi VoIP Into Cellular Service
Anonymous Coward writes "The New York Times (registration required) reports that
Motorola, Proxim and Avaya are expected to announce today that they will jointly develop technology to allow wireless communications to jump between networks without interruption.
This appears to involve making use of WiFi for phone service where it's available, thus converting WiFi hotspots into congestion relief for overloaded cellular networks, and, of course, making cell phones into WiFi terminals."
Cellular operators perceive WiFi as a threat, because there has been long feared that cheap, community operated wireless networks ("guerilla networks" in corporate speak) would wipe out operators own WiFi offerings. What seems to anger operators most is that the whole concept of local wireless networks is not in line with the operators' idea of monetizing every single byte transmitted over the air. Also operators feared that someone would come up with an VoIP-WLAN phone that would offer very cheap voice calls in the WLAN range. WLAN networks.
Now the impact of this new device (and system) that this partnership is going to produce depends on whether it would be oriented towards operators (and would thus require deep integration with GSM operator's infrastructure) or rather corporate customers (and would therefore be more like an software over-the-Internet VPN solution but also for voice communication). I think the first option is more likely and then the operators would be in position to control to some extent the WiFi market with local WLAN operators reduced to being just local bandwidth providers. The most important part of making this work would be the SIM card (or its equivalent) identifying the user and interfaces connecting a registry of users to authentication mechanisms of various visited networks. Most of that is what GSM operators already have.
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