Re: Fwd: VOIP background survey is now on line

[Stephen Kingham <>]

Hi all from down under (Australia).

I would love to attend but the cost and time appears prohibitive. 
Perhaps some day soon I can attend virtually using Voice and Video over
IP.

As a consolation can I try and contribute by plain text email.


>   Tenative agenda items for the meeting are:
> 
>       * Working group leadership

>       * Mission and Vision statements



A COMMON, OR TOP LEVEL GATEKEEPER:

One goal/vision is to seamlessly network IP Telephones (and PABXs
connected using Gateways) just as easily as we network telephones using
PSTN.  

On the joint VoIP network networking Universities Down Under we have
done that by implementing a common Gatekeeper which is primary choice
for all calls (average 6,000 connected calls per day), with second
choice as the local Gateway.  Works for IP Telephones and PABXs
connected using Gateways.  We also implemented hop off common use
Gateways around the country to hop back into the PSTN and a billing
system.

INTERCONNECTION BETWEEN VoIP NETWORKS

Another goal might be to work on Interconnection between VoIP Autonomous
Networks.  Such as between Internet 2 VoIP Network and a VoIP based
Carrier, or closer to my heart is Interconnection between Internet 2
VoIP network and the existing University VoIP in Australia.

At present I understand Interconnection to exchange billing information
and routing is done using ITU-T Signaling System No 7, but is that the
most appropriate way to do it when both Carriers/Networks are VoIP.  I
doubt anyone is interested in using No7 to interconnect Internet 2 VoIP
and the Australian equivalent.


>       * VOIP testbed

Us Australians are very interested in participating in switching calls
with Universities in the US and learning from that exercise.  

We have QoS set up across Australia and hope to have QoS to the West
Coast by about May 2001 to carry Voice and Video over IP.  We also have
common use gateways back into the PSTN around Australia that registered
users can use to hop into Australia if the end point is not already
VoIP, and are willing to include International Universities.  We also
have a billing system to account for the calls back into the PSTN and
pay for the common infrastructure.

Anyone interested in using this in the test bed to make and receive
calls?  For example interconnecting use routing between Gatekeepers?


>      * Vendor liasion (brought up at last meeting)
>      * Other items as required

These are the areas of work we are trying to improve:

* QoS in WAN
  - Policing use of the QoS at ingress to backbone

* QoS in LAN
  - designs/best practice

* Routing and alternate paths
  - Alternate routing for IP Telephones
  - Local Gateway for incoming calls and alternate route for outgoing
  - How to get Gatekeeper to offer alternate paths?

* Emergency calls and Power fail
  - use analogue telephones off a central Gateway/Switch
  - routing guidelines
  - (US only) location of telephone for 911.

* old facsimile support
  - how to do it
  - needs to be in the same number plan as the site.

* analogue modem support
  - how to do it.

* Security to authorise who can and who can not make a call out a
Gateway
  - access lists today is clumsy, what other ways

* Security at firewalls.
  - IP Telephones need a lot of high TCP and UDP ports opened up.
  - test using Proxy for incoming VoIP calls (works in lab)

* Day to day operation
  - how will it change from PABX based telephones
  - how will faults be resolved (will telephone operator ring the TAC
instead of the local PABX tech)?

* What are all the features and what is needed to make them work
  - conference calls, someone make it work for the working group.
  - integration with existing/new voice mail
  - what other key PABX features are really important?

* TIMS
  - How will institutions bill for calls internally

* How to implement IP Telephones
  - Use PABX replacement techniques?
  - who does the handset training
  - phased cut over strategies
  - how will operator consoles work in hybrid environment during cut
over.



Best wishes and I am truly hoping the meeting energises the working
group.

Stephen

-- 
Stephen Kingham, MIT, BSc, E&C Cert
Project Manager and Consulting Engineer 
                              
mailto:
                              Telephone +61 2 6276 6223 (office)
                                        +61 419 417 471 (mobile)
Voice over IP Project
for The Australian Academic Research Network (AARNet) and
Commonwealth Scientific and Industrial Research Organisation (CSIRO)
http://www.aarnet.edu.au/projects/voice and http://www.csiro.au

Have a nice day.

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