ISDN replacement technology SIP provides a flexible and scalable solution for voice access to a company's PBX(telephone switch), George Taylor, CEO at DRBSY. "Voice over the internet or VoIP has always been held back by the quality of broadband connectivity available. However, in South Yorkshire our unique Digital Region service delivers broadband with faster guaranteed upload speeds and quality. It is hard to envisage a future where SIP Trunks won't of replaced most of the ISDN30 lines in service, it's a no-brainer,” he said.

All businesses can benefit from VoIP, it can deliver massive flexibility to increase or reduce capacity e.g. seasonal demand, or if you need to move premises whilst keeping your business number ranges.
A possible sticking point in the past has been the lack of service level agreements on the broadband connectivity. The vast majority of small to medium sized businesses are connected to the Internet via a DSL-based service and so want to use this same connection for SIP, but unfortunately the ADSL services offered by BT and other providers have not been able to demonstrate the quality needed.

Digital Region services offer minimum bandwidth levels, which can support any size of business from a one-person home office through to a corporate call centre.
As the cost of data connections continues to fall SIP Trunks will pick up, our services offer guaranteed connectivity at a fraction of the cost of legacy leased lines. As market confidence grows there will be a greater swing to wards internet voice.

Key features and benefits of SIP:

Free calls between sites.
Lower cost that ISDN.
Lower call costs.
Number porting allows user to bring existing number with them wherever the new location.
Scalable on a per channel basis, no penalties for scaling up or down as required.
Compliments a converged network with lower costs and simplified architecture.