Synergy Research Group released their newest report describing the market share break down of the VoIP markets and showing what's been driving the carrier VoIP market.

In "Carrier VoIP Q4 2009 and YE 2009 market shares," Synergy reveals that the market for Carrier VoIP totalled $10 billion in 2009. While traditionally the migration of old PSTN lines to VoIP was the main driver of Carrier VoIP, Synergy found that further growth was added by Mobile Operators seeking the Capex and OpEx benefits of IP. "Mobile deployments for Carrier VoIP have made a serious impact on market sizes and market players for the VoIP Media Gateway market," says the release.

As for market share, Synergy saw GENBAND as the leader of the pack for Media Gateways with 22 percent followed by Huawei with 15 percent. When GENBAND acquires Nortel CVAS its market share will be twice its nearest competitor. In the IMS VoIP market, Synergy saw Alcatel-Lucent as the leader with 47 percent of the market share. Ericsson followed Alcatel-Lucent with Huawei nipping at its heels.