[LARTC] QoS / VoIP

[LARTC] QoS / VoIP

[Brian M. Diehl]

Hello,

Please excuse any of my errors, as I am new to this list (Just signed
last night!)
Here is my situation.  I have four remote offices, one connected by a
wireless link, one connected by a regular T1 and two connected by frame.
We have just switched PBX's and are now using VoIP phones instead of
landlines.  My problem is (obviously) with VoIP, the voice is getting
choppy whenever there is high data transfers.  

My question is, for the office with a T1, should I put a QoS box on both
ends? (One here at HQ, and one there?)  Same with the frame?  And
correct me if I'm wrong, but I will need one at both ends for the
wireless link.

If have read most of the LARTC HOW-TO, but it hasn't sank in totally
(trying to take a drink from a fire hydrant)

Thanks in advance,

--
Brian M. Diehl
Network Admin
A-1 Limousine Inc.
609-919-2019
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Re: [LARTC] QoS / VoIP

[Damion de Soto]

Hi Brian,

> Here is my situation.  I have four remote offices, one connected by a
> wireless link, one connected by a regular T1 and two connected by frame.
> We have just switched PBX's and are now using VoIP phones instead of
> landlines.  My problem is (obviously) with VoIP, the voice is getting
> choppy whenever there is high data transfers.  
> 
> My question is, for the office with a T1, should I put a QoS box on both
> ends? (One here at HQ, and one there?)  Same with the frame?  And
> correct me if I'm wrong, but I will need one at both ends for the
> wireless link.
It really depends where your bandwidth is getting used up.
QoS and traffic shaping works (best and easiest) on outbound traffic only, so if you 
can determine which links are being flooded with (non VoIP) data transfers, and then 
put a QoS box on the end sending the data, it may solve all the problems.

If all the links are being flooded, then chances are you will need shaping at each 
end - 5 QoS boxes.
Keep in mind, if you are using linux machines as any existing gateway/routers, then 
you can probabaly just install the tc tools and do the shaping on them, in their 
existing place in the network.


-- 
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