Discover some of the myths surrounding enterprise SIP trunking and how it really compares with ISDN.

1. Debunking the SIP
trunking myths
Don’t let the myths surrounding enterprise SIP trunking prevent
your customers benefiting from this game-changing technology.
www.gamma.co.uk

2. www.gamma.co.uk
Want to reassure your
customers that enterprise
SIP trunking can provide
real business benefits for
them? We provide you
with the answers to all of
their questions.

3. www.gamma.co.uk
Myth one: ‘SIP trunking
is untested technology’
The technology underpinning SIP
trunking is well established and
standardised. Around one million SIP
trunks are currently used in the UK, with
this figure expected to triple by 2018.

4. www.gamma.co.uk
Myth two: ‘Deploying
SIP trunking is difficult’
Integrating SIP trunking into a
company’s phone network is often
easier than with ISDN. Also, a
reputable SIP trunking provider will
provide full on-site support.

5. www.gamma.co.uk
Myth three: ‘Cost
savings are marginal’
Public calls made over SIP trunking
are cheaper than those made over
ISDN and internal calls (including
those between international
branches) can be free.
Enterprise SIP trunking can
generally result in more than 60%
savings over existing infrastructures
and trunking services. Rationalising
ISDN lines and PBXs can bring
further savings.

6. www.gamma.co.uk
Myth four: ‘Security
is an issue’
SIP offers various tools that
work in conjunction with
firewalls including monitoring,
alerting and portal control.
If the SIP trunking provider
operates its own national
network, even greater security
is assured.

7. Myth five: ‘Choosing
SIP means having
to compromise on
quality of service’
The QoS offered by SIP can
match that offered by traditional
voice services.
www.gamma.co.uk

8. www.gamma.co.uk
Myth six: ‘SIP
is less reliable
than ISDN’
SIP can provide
100% uptime on your
telephony.

9. Myth seven: ‘SIP
is less robust
than ISDN’
Enterprise SIP trunking
enables your customer’s PBX
to be hosted in the cloud,
offering a speedy disaster
recovery solution. ISDN
failures can take days to fix.
www.gamma.co.uk

10. www.gamma.co.uk
Myth eight: ‘SIP
trunking makes the
telephony network
more complex’
By unifying voice, multimedia
and internet, SIP simplifies the
telephony network and enables
you to rationalise the number of
ISDN lines and PBXs.

11. www.gamma.co.uk
Myth nine: ‘The
number of channels
available with SIP
trunking is limited’
There is no limit on the number
of SIP channels available.

12. Myth ten: ‘SIP
is limited by
geographical
area code’
Unlike ISDN, SIP
telephone numbers
are not tied to a site.
SIP offers full number
portability.
www.gamma.co.uk

13. www.gamma.co.uk
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