Local loop: Subscriber line or VoIP/SIP? A flexible, lower-cost solution

Most of Clarity’s customers in the past have opted for so-called local loop lines/subscriber lines (a mode of access which allocates a dedicated line for each call). Only the extensions are operated by the customers via VoIP/SIP. But, there are convincing arguments in favor of a shift to VoIP/SIP for trunk lines as well. For instance, customers working with the Clarity Communication Center eliminate the need for gateways between S2M/E1 or S0 trunk connections and the system through the use of VoIP/SIP connections. They also have full flexibility with respect to the number of lines available.
Take, for example, a small call center with 30 outbound agents, which connects to the trunk via primary multiplexers (these link the telephone system to the ISDN). If the call center decides to use ninety subscriber lines (three S2M/E1 connections), it pays the corresponding amount each month for the three primary multiplexers (each multiplexer accommodates 30 lines). The situation is different with VoIP/SIP trunking: With some VoIP network providers, the company simply uses as many channels as it needs. This might be 50 channels one month and 110 the next. The company pays the provider only a small basic fee for use of the lines, and naturally the charge for call minutes. Thus, the customer has full flexibility when it comes to the number of trunk channels, and saves the gateway fees on top. As for the justified questions some may have with respect to call quality: Nowadays, provided enough bandwidth is available, it has become impossible to tell the difference. And some VoIP/SIP trunk providers offer test phases lasting several weeks, in which customers can decide whether the solution is operating as they wish. VoIP/SIP already has a track record of acceptance for in-house extensions. Now, this alternative technology is gaining ever greater acceptance for inbound/outbound lines as well. Have questions about VoIP/SIP trunk lines? We would be glad to help you find out all you need to know!

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