The advantages of Session Initiation Protocol (SIP)

As more and more UK businesses outgrow their telecommunications solutions, they begin to look for an alternative that offers more flexibility, reliability and value for money. So, does SIP outperform ISDN?

The growth in the SIP trunk market has been one of the success stories of recent times and the pace of the market seems to show no sign of declining at the moment.

Well, it seems a whole bunch of people still rely on ISDN as their main form of voice connectivity but increasingly users are turning to SIP. Why is that? What are the advantages? In fact, what are the pros and cons?

As more and more UK businesses outgrow their telecommunications solutions, they begin to look for an alternative that offers more flexibility, reliability and value for money.

So, does SIP outperform ISDN in all these three areas?

Industry providers have referenced the following:

Customers come to us driven by a need for capacity to transfer and process data quickly, often exploring opportunities the cloud is bringing. Originally SIP trunks had a bad reputation for reliability, but the technology is sound. System integrators in the early days were deploying SIP over inadequate low speed internet connections. We see market demand for SIP growing particularly amongst the small and medium sized businesses that recognise the cost benefits initially and have confidence in the network removing high latency, the main reason for trunks dropping and packet loss. Customers then realise that there is a wealth of other benefits that SIP provides beyond cost savings that cement the decision to move from ISDN to SIP.

Compared to ISDN, SIP is cheaper on a per channel basis, more flexible in terms of what telephone numbers you can have and where you can have them, is quicker to install and can offer a very robust business continuity service that ensures your business never loses calls.

Because of continued improvements in access connectivity over the past few years, SIP trunking is now well established as the preferred solution for small business and large enterprise. Concerns relating to quality and reliability that were raised in the early years of SIP trunking have been addressed and SIP trunking certainly delivers more flexibility, reliability and value for money than ISDN.

In terms of flexibility, SIP trunking enables a business to readily scale up or reduce the number of channels that are required, for example, in response to fluctuating seasonal demand. It also provides more options than ISDN when it comes to number plans. From a reliability standpoint, SIP trunking can greatly improve business continuity. When considered together with the SIP trunking costs (both for call charges and setup), these factors and the ability for an enterprise to be more flexible either in response to demand or the need to overlay value added applications, means that SIP trunking does indeed provide value for money.

To find out more on the range of SIP trunk solutions from Alliance Communications, please call 01173 700900.