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Vonage I have tested this as thoroughly as I know how and can only conclude Comcast is at
I have tested this as thoroughly as I know how and can only conclude Comcast is at fault...
Physical device setup at home (near Mundelein, IL with Comcast as ISP)
1. Linksys BEFCMU10 v4, Cable Modem
2. Cisco PIX 501 (fixup sip left enabled, no port forwarding to the PAP2)
3. Linksys SR2024 Switch
4. Linksys PAP2 (fw v3.1.9C) and/or WinXP Computer
Physical device setup at the datacenter (near Oakbrook, IL with XO as ISP)
1. Cisco router
2. Cisco PIX 506E (fixup sip enabled, no port fwd)
3. Cisco Catalyst 2970
4. Linksys PAP2 (fw v3.1.9C) and/or Win2K3 Server
Vonage dashboard quality set to 30Kbps/normal for both adapters
From home...
- logging in and navigating secure.vonage.com webiste very slow/unusable
- calling my cell phone (in the same area code as my Vonage number) audio quality is "digital" it breaks up mid-word (incomming caller audio is fine, just my outgoing audio was bad)
MOS score = 3.9 (yellow)
From datacenter...
- logging in and navigating secure.vonage.com works fine
- calling my cell phone audio quality is excellent
- MOS score = 4.4 (green)
...ping/tracert/bandwidth test did not show anything interesting when comparing results from the two sites to secure.vonage.com or the (vonage server) IP that the PAP2 was connected to at the time (sorry, I'm not posting to prevent lash-back or disclosing too many details)
...this would be a real shame if Comcast is intentionally packet shaping or otherwise to frustrate Vonage users into canceling and using thier version of Voip service. Think thats bad? yeah it is, but that wouldn't stop them - and how would anybody know right? (Whatever port or protocal based method they could use to do this would not be apparent/obvious from comparing ping/tracert/bandwidth test data anyway)
...from what I have seen installed at other customers, the Comcast phone solution is a cable modem/ATA adapter in a single box. Meaning it connects right to the Coax and then gives you an RJ11 POTS line out. I do belive it is Ethernet/IP based on the chips inside the adapter, but cannot confirm it is true Voip or the SIP method of audio over Ethernet. Regardless - don't be fooled into these tactics - call Comcast and complain as far up the food chain as you can - sure the random lady who answeres the phone at the call center doesn't give a crap, but the call center managers reports of "time call taken" and "number of calls answered" will go way down and then perhaps they will compain to upper management.
I don't mean to preach or act like I know how this whole thing works, but please don't just blame or cancel Vonage and by no means reward Comcast by signing up for thier phone service. Taking the time to call and complain, as childish as that is, is the only way for this issue to get the nessesary attention it deserves.
I first noticed voice quality problems at arround 2:15pm today, but as of 5:00pm it would seem this issue has been resolved and service at my home works satisfactory/as expected. This is not by any means the first time I have been frustrated by this. As usuall visiting other websites, speedtests, ping/tracerout times to other websites are all fine during this "glitch"
P.S. I don't work for Vonage or comcast - I am an independant network integrator who happens to use both and a bunch of other providers - this is just one example/opinion out of the blue, take it for what it's worth.
Read The Full Thread: Comcast vs. Vonage
• ok, thank you CyberCSI for ur link. It seems you're very knowledgeable about networking
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I
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Before when I called comcast I always got the same
JPElectron posted "I have tested this as thoroughly as I know how and can only conclude Comcast is at" on 02/21/2006 |
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