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seanfulton
Joined: 19 Jul 2005
Posts: 6
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 Posted:
Tue Jul 19, 2005 12:05 pm Post subject:
voip on Bay/Nortel ARN w/ BayRS 14.0 |
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I've got a Nortel ARN that has worked fine for 10 years, most recently on BayRS 13.2. We subscribed to Vonage and installed four VOIP adapters on our network and now have problems.
Basically, voice calls are fine so long as no traffic goes over the link. If you initiate the call, then, for example, begin an FTP download over the T1 link, the phone call immediately goes garbled and is hardly usable.
I upgraded the router to 14.0 and enabled both DiffServ and RSVP, but do not know how to use them properly.
Our support contract has run out and I'm investigating getting a renewal so I can download the latest BayRS but I'm wondering if this will solve the problem or if there is something else I can do.
Any advice would be greatly appreciated.
sean |
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T. Sean Weintz
Guest
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| Posted:
Tue Jul 19, 2005 11:35 pm Post subject:
Re: voip on Bay/Nortel ARN w/ BayRS 14.0 |
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seanfulton wrote:
| Quote: | I've got a Nortel ARN that has worked fine for 10 years, most recently
on BayRS 13.2. We subscribed to Vonage and installed four VOIP
adapters on our network and now have problems.
Basically, voice calls are fine so long as no traffic goes over the
link. If you initiate the call, then, for example, begin an FTP
download over the T1 link, the phone call immediately goes garbled
and is hardly usable.
I upgraded the router to 14.0 and enabled both DiffServ and RSVP, but
do not know how to use them properly.
Our support contract has run out and I'm investigating getting a
renewal so I can download the latest BayRS but I'm wondering if this
will solve the problem or if there is something else I can do.
Any advice would be greatly appreciated.
sean
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Use protocol priority to put the VOIP in the high priority queue, and
everything else in the medium priority (or low priority) queue. Do it by
adding protocol priority to your outbound interface. Create a prtotocol
prioirty template specifying a match on the source address, using the
sourse IP address of the Vonage adapter, and placing the packet in the
high queue as the action. Then create a filter for that interface using
the template you crteated.
Works for me.
Let me know if you need more detailed instructions. |
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seanfulton
Joined: 19 Jul 2005
Posts: 6
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| Posted:
Wed Jul 20, 2005 3:12 pm Post subject:
re:voip on Bay/Nortel ARN w/ BayRS 14.0 |
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Thank you for the response.
I was trying to do it by udp port since the vonage adapters are using DHCP, but I will assign them static IP addresses and force it that way since that sounds like it works better. I will try it and post if I need help.
sean |
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seanfulton
Joined: 19 Jul 2005
Posts: 6
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| Posted:
Wed Jul 20, 2005 10:19 pm Post subject:
re:voip on Bay/Nortel ARN w/ BayRS 14.0 |
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I created the filter exactly as you describe and it seemed to help quite a bit. Only problem that I can detect is if I do a big FTP download (and this is a full T1), it still garbles the call, although not as badly.
I used the bandwidth meter Vonage has on their site and during idle times, it says I have 1.4-1.5 Mbps. During the FTP, that drops to 394K or so. Still plenty of bandwidth for the call, so I'm wondering if I also need a filter to drop FTP to a lower priority or if this is just as good sa it gets.
sean |
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I am a Sock Puppet
Guest
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| Posted:
Thu Jul 21, 2005 9:54 pm Post subject:
Re: voip on Bay/Nortel ARN w/ BayRS 14.0 |
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seanfulton wrote:
| Quote: | I created the filter exactly as you describe and it seemed to help
quite a bit. Only problem that I can detect is if I do a big FTP
download (and this is a full T1), it still garbles the call, although
not as badly.
I used the bandwidth meter Vonage has on their site and during idle
times, it says I have 1.4-1.5 Mbps. During the FTP, that drops to
394K or so. Still plenty of bandwidth for the call, so I'm wondering
if I also need a filter to drop FTP to a lower priority or if this is
just as good sa it gets.
sean
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Part of the issue here is that you can't control how inbound (to you)
packets queue up from your ISP router to you - you can only control
traffic after it hits your ARN.
Giving FTP lower prioity may help. Also, for the protocol priority
interface setup, I set the queue distibution in a REALLY steep curve -
95% to the high queue, 4% to the med queue and 1% to the low queue.
Also, enable the "dequeue at line rate". That seems to minimze network
jitter in my experience.
--
DO NOT REPLY TO THE EMAIL ADDRESS
IN THE HEADERS OF THIS POST.
IT IS A SPAM TRAP ADDRESS. |
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tigerwoods
Joined: 02 Sep 2005
Posts: 1
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Fri Sep 02, 2005 4:00 am Post subject:
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We upgraded to Version 15.6 with FRF.12 enabled. We also have high priority queues in place for Voice, Low Priority For Data. Took the advice of the dequeue at line rate, and reallocating percentage of queues. Still have garbeled voice.
Some sites have 100+ users, with Phase I Nortel Phones.
Any limitation on processing with ARN Routers. Should we upgrade phones or routers?
Anybody have any ideas? |
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