RE: Multi-services network

["Reni Ninan" <rninan at nortelnetworks.com>]

Constatine,

It depends on 2 major factors 1) when you plan to implement the network and
2) do you have bandwidth constraints? If it's going to be a year or two,
then IP alone will work as well. With MPLS just being ratified, IP services
will also be able to support QoS. But if it's going to be now, then IP is
just not yet there yet. Especially with Voice, you will hard pressed to get
the quality that you might get with ATM (Granted a lot depends on the
algorithms that the vendors implement, CS-ACELP, ADPCM etc.).

ATM QoS is already proven.

I think, currently the better choice is IP at the edge and ATM at the core.

Thanks
                    - Reni

----------------------------------------------------------------------- 
Reni Ninan 
* Tel: 847-706-8461 
*    Fax: 847-706-8468 
* E-Mail: <mailto:rninan at nortelnetworks.com>



> -----Original Message-----
> From:	Constantine Protopapas [mailto:wiztech at cmpnetmail.com]
> Sent:	Saturday, April 17, 1999 11:29 AM
> To:	ietf
> Cc:	Scott Brim
> Subject:	Multi-services network
> 
> 
> 
> I am in the designing stage for a multiservice network integrating
> real-time data (Real Audio, stock exchange data), voice (in the near
> future) and Internet services (e-mail, FTP, http etc.). I would like to
> get some opinions and feedback from you based on your experience. More to
> the point, I am looking of possible ways to achieve end-to-end QoS. Since
> I am not budget-constrained, I look for the best possible solution. I am
> thinking of using ATM at the core/backbone and TCP/IP on the edge.
> Conversely, I could use an all-IP environment, but I don't know if QoS can
> be implemented adequately for the applications required. The reason for
> this posting is to ask about the different technologies involved,
> especially in the QoS area.
> Thank you in advance for your co-operation and assistance.
> 
> 
> 
> Constantine Protopapas
> Systems/Network Engineer
> Wiztech Internet Consulting
> e-mail:	wiztech at cmpnetmail.com
> Tel:	++301-6801391
> 
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