The respected Dell'Oro Group suggests that its all over for TDM lines


Voice and data convergence is gaining momentum, according to newly published research from Dell'Oro Group.


The analyst firm reported that sales of PBX IP lines increased 42 per cent year-over-year during the fourth quarter of 2005, while sales of traditional circuit-switched TDM lines decreased by two per cent.

The momentum is building for IP line sales. For example, the rate of growth in the fourth quarter 2005 was about 50 per cent higher than the past several quarters," said Steve Raab, director of IP telephony research at Dell'Oro Group.
"This new level of growth is sustainable because manufacturers have enhanced the feature richness of their IP products, and users are more familiar and comfortable with voice over IP.

The Dell'Oro Group's IP Telephony Enterprise Quarterly Report showed that Nortel edged out Cisco as the number one supplier of PBX IP lines, with Avaya in third position.


The report also predicted that Nortel is on track to generate more PBX sales from IP lines than TDM lines in the next two quarters.


About Dell'Oro Group


The Dell’Oro Group IP Telephony Enterprise Quarterly Report offers complete, in-depth coverage of the market with tables covering manufacturers’ revenue, average selling prices, line (analog/digital and IP), shipments for IP PBX–large and small, Hybrid IP/TDM PBX–large and small, traditional PBX, traditional key systems, and IP telephones.


As the trusted source for market information about the networking and telecommunications industries, Dell’Oro Group provides in-depth, objective research and analysis that enables component manufacturers, equipment vendors, and investment firms to make fact-based, strategic decisions.
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