IS SIP AN ALTERNATIVE TO ISDN? | The Communication Blog

Thursday, November 26, 2009

IS SIP AN ALTERNATIVE TO ISDN?

By Martin Wacey

Companies are seeking a cost effective solution to ISDN.The question is therefore:- Is there an alternative? SIP (Session Iniatiation Protocol) is seen by some people as an alternative as it allows for the creation of virtual phone lines between your PBX and the public network.

Using your internet connection to make telephone calls means instant savings in addition to the analogue and ISDN line rentals.

The good news is that there is a risk free way to try the technology out whilst benefitting from the savings that the technology brings.All incoming calls will still go over ISDN lines as they do now.All outgoing calls will be re-routed via a box over your internet connection using SIP trunks.If your internet connection goes down the calls will go over your remaining ISDN lines.

Cheaper phone calls and cheaper analogue and lSDN costs are the tangible rewards as the surplus lines are no longer needed.This means no initial investment as any minor installation costs are immediately swallowed up by the savings.

For example in any organisation not everyone needs to make or receive calls simulataneously.Most companies will normally rent more ISDN channels then they actually need.And that means unused line rental costs.What if these unused lines could be replaced by SIP Trunks at a fraction of the cost?

In a nutshell then the benefits of trying it out are clear.Replacing surplus line rental costs can be done in an entirely risk free way.Costly analogue and ISDN lines which are not being used can be a distant thing of the past.

As reduced call costs are an additional automatic benefit it is essential when looking for a company that offers SIP that you get a quote for these rates.

One such company offering this technology is Tipicall.At the moment they are running a promotion offering free SIP trunking for life.

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