[Asterisk-Users] GXP-2000

[Mike Fedyk]

I have heard good things about the D-Link DES-1226G switch ($150 at 
newegg).  If you can run a separate cable to the computer and phone.  If 
you can't run the extra cables, then configure your phone to tag itself 
as part of the voip vlan and let the switch tag everything else as the 
computer vlan.

I happen to have asterisk running as a router, so I use it doing QoS 
with tc (traffic control) and wondershaper set to prioritize based on 
port ranges.  I sent a patch to the debian bug tracking system a while 
back with a few improvements -- I should check on that.  It basically 
prioritizes smaller packets before larger packets with ~8 levels of 
priority and groups of sizes for the packets.  Just doing that 
automatically handles 80% of the need for prioritization without 
specifying port ranges for the sip rtp packets.

Mike

Daniel Salama wrote:
> They are extremely casual web surfers. Just have their Outlook client 
> opened checking email every minute. Email traffic is very low.
>
> They are all connected to the same switch. It's a Netopia DSL 
> router/modem/switch for the BellSouth DSL service. The computers are 
> connected to the PC port behind the GXP-2000.
>
> Any suggestions?
>
> Thanks,
> Daniel
>
> On Jun 7, 2006, at 8:49 PM, list mail wrote:
>
>> What do they do on the internet? Heavy surfing, large transfers, 
>> myspace. 
>> How are these units connected to the network? Are they passing 
>> through the same switch?
>> I don't think it is the phones...
>>
>> On Jun 7, 2006, at 12:32 PM, Daniel Salama wrote:
>>
>>> Mike,
>>>
>>> I added a qualify=500 on those phones. My client has peers 100218 
>>> thru 100222 (a total of 5 phones). Below is the messages log since I 
>>> activated it this morning at 8:30AM:
>>>
>>> Jun  7 10:59:21 NOTICE[3648] chan_sip.c: Peer '100219' is now TOO 
>>> LAGGED! (1075ms / 500ms)
>>> Jun  7 10:59:31 NOTICE[3648] chan_sip.c: Peer '100219' is now 
>>> REACHABLE! (66ms / 500ms)
>>> Jun  7 11:02:32 NOTICE[3648] chan_sip.c: Peer '100219' is now TOO 
>>> LAGGED! (1075ms / 500ms)
>>> Jun  7 11:02:42 NOTICE[3648] chan_sip.c: Peer '100219' is now 
>>> REACHABLE! (68ms / 500ms)
>>> Jun  7 11:35:15 NOTICE[3648] chan_sip.c: Peer '100222' is now TOO 
>>> LAGGED! (1114ms / 500ms)
>>> Jun  7 11:35:25 NOTICE[3648] chan_sip.c: Peer '100222' is now 
>>> REACHABLE! (90ms / 500ms)
>>> Jun  7 11:48:20 NOTICE[3648] chan_sip.c: Peer '100219' is now TOO 
>>> LAGGED! (1077ms / 500ms)
>>> Jun  7 11:48:30 NOTICE[3648] chan_sip.c: Peer '100219' is now 
>>> REACHABLE! (72ms / 500ms)
>>> Jun  7 12:24:51 NOTICE[3648] chan_sip.c: Peer '100221' is now TOO 
>>> LAGGED! (1077ms / 500ms)
>>> Jun  7 12:25:01 NOTICE[3648] chan_sip.c: Peer '100221' is now 
>>> REACHABLE! (73ms / 500ms)
>>>
>>> As you can see, it only happens to a couple of their phones and at 
>>> random times. They're behind a DSL circuit. I don't know if it's 
>>> because their DSL line is going up/down. They don't necessarily 
>>> claim their Internet goes down, however, they are not constantly 
>>> check it.
>>>
>>> What would you (or anyone else) suggest?
>>>
>>> Thanks,
>>> Daniel
>>>
>>> On Jun 7, 2006, at 8:07 AM, Mike Fedyk wrote:
>>>
>>>> Do you have multiple phones going down at the same time?  If so, 
>>>> monitor them with "qualify=500" in sip.conf to see if they hit that 
>>>> limit.  If you see more than one go down within a short period of 
>>>> time, you have network problems.  Check the quality of the network 
>>>> switches they have. 
>>>
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