It has taken probably a decade longer than its proponents expected, but it looks as if booming demand for voice over IP (VoIP) and session initiation protocol-based (SIP) services may finally be chiming the death knell of the TDM-based PBX, in North America at least.

According to Frost & Sullivan, VoIP access and SIP trunking service revenues turned in what the researcher described as “down-turn defying” performance last year, with revenues up 22% at $717.3 million, and customer numbers up 401%.

Read the full story

David Duffett, an Independent Consultant, spoke on behalf of Telespeak at Unified Communications ’09. Taking time out of his busy schedule, David gave a practically-focussed session that covered the current state of play when mixing VoIP with wireless; from the different things some classify as Fixed Mobile Convergence to the process of Least Cost Routing through GSM gateways.
Each of the current technologies were examined in terms of the cost-benefit of the mobility they allow, concluding with a look forward to what might happen if a VoIP PBX could be embedded in a Femtocell.

View David Duffett’s presentation – Listen to David Duffett’s presentation