Ian ColvilleProduct Manager

Aculab plcian.colville@aculab.com

+44 (0)1908 273 923

VoIP without DSPs: challenges and opportunities

Agenda

An epiphany moment How’d ya do VoIP without DSPs? Some of the benefits The issues and challenges Where can you use it? A mini case study Questions Summary

My job for the next 20 minutes…

Keep you awake and engaged Provide an educational and fun experience Maintain non-commercialism Pass on some thought provoking tips centred

around the challenges and opportunities arising from VoIP without DSPs

There’s nothing like a good idea

Sometime, somewhere…

Someone had a thought along the lines of, “In an all-IP environment I don’t need a T1, so is there still a need for a DSP board?”

At this epiphany moment, he thought unto himself, “There is another way!”

Or as Nostradamus put it…

In the bright millennium in the house of greatest power

With a blinding flash that is not obscure

He will realise no need for T1s And can resources run on any

PC tower

What do we mean; VoIP without DSPs?

DSPs run firmware that performs media processing

Functions are essential for telephony systems Software-based media processing resource

functions are an alternative Software that runs on a host PC’s CPU Alongside the application Instead of firmware running on dedicated DSP

resource boards

What do these resources do?

How to implement VoIP without DSPs

Let’s get to the heart of the matter

Benefits of this approach

Terrific idea for trial or development systems Speeds time to market Cost-effective for small-scale VoIP e.g., SMEs Reduces total cost of ownership Wide choice of platforms ‘No-brainer’ network connectivity Can be offered as a package with SIP or

H.323

Issues and challenges

Toasting the host

Issues and challenges

It’s not the speed The application Codec selection Delay/latency

Issues and challenges

Some functions are better suited to DSPs Echo cancellation Conferencing

Issues and challenges

Licensing Upgrades/scaling up Support costs Total cost of ownership

Issues and challenges

Functionality Channel count Small-scale systems The nature of the application Telco-grade

Where can you use DSP-less VoIP?

Small-scale IVR, voicemail IP PBX for SMEs High channel broadcast/announcements Try it out on telco-grade servers

or Blades

Mini case study

Here’s an example of VoIP without DSPs Cisco CallManager VoIP telephone system

replaced old TDM system Educational complex with its own hotel 4 separate campuses; >500 extensions Voicemail features didn’t meet customer’s

needs

Mini case study

DSP-less VoIP for enhanced voicemail Standard H.323 interface Unlimited amount of voicemail boxes and

messages Several ’add-on’ features compared to

’standard’ voicemails e.g., mobile phone voicemail box, automated attendant, information boxes, email forwarding (WAV file), browser-based user interface, IVR, etc.

The opportunities realised

No extra hardware costs for interface or resources Easy integration process Hybrid solutions possible

Various PBXs and VoIP solutions served by same voicemail/ IVR

Implementation costs are low Easy to implement, tailor, upgrade and update Delivery costs are modest

Any questions?

Haben Sie irgendwelche

Fragen?

Have you any questions?

Vous a n'importe quelles

questions ?

Heb u enig vragen?

Le tiene cualquiera pregunta?

L'ha qualunque domande?

Имейте Вас любые вопросы?

Czy maja Panstwo jakies pytania?

Have you any questions?

In summary

Speeds time to market Cost-effective for small-scale VoIP e.g., SMEs Reduces total cost of ownership No extra hardware costs for interface or

resources Easy to implement, tailor, upgrade and update Wide choice of platforms Blade Server is an option

Or, as Nostradamus might’ve said…

In the halcyon days of adventurous voice over IP

Great systems will be constructed

IVR and VM1 will demand resources

And they shall be found without a DSP

1: Voicemail

You can call me IanAnd I’ll say you’ve been a great audience

THANK YOU!

See Aculab on stand 515ian.colville@aculab.com

+44 (0)1908 273 923