SWITCHING FROM ISDN TO SIP

w w w . s w c o m m s . c o . u k

W H Y S W I T C H ?

Today’s business climate calls for

reliability, agility and flexibility. In

order to deliver on these core

goals, the tools companies need to

communicate to their customers

and the wider world must be and

fit for purpose.

With the phrase ‘always on’ an

expectation rather than a bonus,

moving to a modern connectivity

solution is becoming a necessary

step for businesses that are serious

about how they communicate.

However, that is not always the case.

Many companies are still relying on

traditional PSTN and ISDN

technology for their business .

In this eGuide, we explore how the

telecommunications landscape is

changing, why businesses are moving

and what the map to change looks

like. We also see how one business

revolutionised their communications

by moving from a traditional ISDN-

based solution to Session Initiated

Protocol (SIP) trunking.

It is common knowledge among telecommunications experts

that ISDN is a dying technology. Indeed, BT intends to switch

their ISDN network off entirely in 2025 and the general

consensus is the technology will be as good as gone within

five years.

But this traditional connectivity solution is still being used by

many businesses.

WHAT IS ISDN?

ISDN is a communications network that relies heavily on

physical infrastructure, specifically copper wiring. It is hard to

add and remove new lines to an ISDN network because it

requires physical intervention, and when things break, there is

no quick fix.

WHAT IS SIP?

SIP is the future-ready replacement solution for ISDN

trunking and connects a business’s telephone system to

the carrier’s national network via broadband, ethernet

or private circuits.

B E N E F I T S O F S I P - C O S T

SIP channel monthly rental is not only less

than ISDN rental but also includes calls to UK

national numbers starting with 01, 02 and 03,

as well as calls to UK mobiles starting 07.

This means businesses that don’t call premium or

international numbers can save more than 50% on

their telecoms costs.

BENEFITS OF SIP - GROWTH

With SIP, the addition of new lines or new office

locations becomes a simple, pain free process.

Line capacity can be managed effectively to meet demand

without fuss and in most cases, call routing can be controlled

easily, without requiring support from a supplier.

Importantly for growing businesses, it means that setting up

new offices and remote workers does not require entire

teams to stop working for installation to take place.

Implementation can be seamless with minimal impact on

productivity.

Number flexibility with SIP trunking ensures that if you are

relocating, you can keep your existing numbers, even if you

are moving to a different geographic location.

Additional SIP trunks can be

added in less than a minute!

B E N E F I T S O F S I P - R E L I A B I L I T Y

When a traditional ISDN connection goes down, it can be for

days rather than hours. Businesses are reliant on their provider

for a resolution, or to implement expensive call forwarding

options reactively until the problem is resolved.

A modern solution, like SIP trunking or a fully-hosted phone system,

comes with in-built resilience features. These solutions ensure that if

something does go awry, business continuity can be maintained, with

instant failover of voice traffic on to a different line or to call plans that

can include immediate redirection of calls to different hunt groups, office

locations or even mobiles.

Due to this, thousands of UK businesses have identified cloud-based

telephony as the future-ready technology they need to enable growth

and agility.

s w c o m m sC o m m u n i c a t i o n s H o u s eM o o r L a n eE x e t e rD e v o nE X 2 7 J Fw w w . s w c o m m s . c o . u k

0800 054 6789

SIP@swcomms.co.uk

“We have a built up a good relationship with many of swcomms’ staff. We are targeted time and time again by other suppliers, but I believe in loyalty. swcomms really look after us in terms of service and price. We have even seen charges reduced! How many times does that happen? We like to surround ourselves with people we want to work with.”Chris BloxhamBloxham & Barlow

“The upgrade was handled with great sensitivity, with emphasis on the end user experience. A big thank you to swcomms for making the transition so smooth.”Alison Comlay, IT & office managerDiocese of Salisbury

“Excellent service and very professional. I would be happy to recommend.”Richard Orsman, managing directorDevoran Metals

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