SIP (Session Initiation Protocol) is a new technology which allows for the creation of virtual phone lines between your PBX and the public network.Is SIP therefore a cost effective alternative to ISDN? The following explores this question.

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 essence any organisation has nothing to lose by trying this out.There is no risk as the remaining ISDN and analogue lines will serve as back up in the unlikely event of your Internet connection failing.

As mentioned previously call costs will automatically decrease.Perhaps this is also worth emphasising!! When seeking a company that offers SIP it is advisable to get a quote for these costs too.

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

Learn more about alternatives to ISDN Lines. Stop by Martin wacey’s site where you can find out all about sip trunking and what it can do for you.