SIP trunking technologies are certainly becoming more popular to SME’s as a way to lower costs. Typically, a single ISDN30 line installation could cost in the region of £6,000 and savings could be as great as 40% when replacing a normal BT landline service.
However, there are other benefits too, such as increased flexibility, especially as scaling the number of users is easy to do. There have been problems in the past with the robustness of connectivity for voice packet applications but the technology has vastly improved and it is now considered a viable alternative to ISDN.
When asked whether SIP trunks are ready to replace ISDN? BT’s Head of Sales Engineering, John Bedwell said; “Yes, though I believe it is a good idea to understand what journey the user is on”
We agree, which is why we encourage users to adopt an auto failover as a resilience mechanism for any potential failures.
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