[Asterisk-Users] VOIP Deployment Concerns --- Adelphia Cable

[Lawrence Keyes]

I've been playing with Vocal/Asterisk/FWD, etc. for some months and in
general using Adelphia as my ISP, the regular ISP service at $55.00/mo which
includes $5.00 rental for their modem. (I don't subscribe to the cable TV
service). 

In general, the service has been OK. They don't offer a fixed IP address, so
I got one with DynDNS.org which is then updated automatically through my
(very cheap) LinkSys BFSX41 home router.  As far as I can tell the only
inbound port that is blocked is port 80.

Voice quality seems to be fine under most circumstances using Grandstream
phones and the X-Lite softphone client. In those circumstances when it has
not been good, I can't attribute the problem to Adelphia. (wrong codecs,
misconfiguration...etc.)  They do not support the router connections...so
when you are having problems, you need to connect a single machine to the
cable modem. 

I know there are regional differences with Adelphia, (we're near Burlington
VT). Service has occasionaly flaked out...but then I've had Verizon T-1's
that were less reliable than my Adelphia service. 

-- Larry 
-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com] On Behalf Of Walt Reed
Sent: Wednesday, February 04, 2004 7:04 AM
To: asterisk-users at lists.digium.com
Subject: Re: [Asterisk-Users] VOIP Deployment Concerns

On Wed, Feb 04, 2004 at 12:38:37AM -0500, William Suffill said:
> I will be moving in a few months and I'm concerned as to what kind of
> bandwidth I would need to work effectively. The reason I posed the
> question here is simple most of my work is remote SSH to various
> BSD/Linux machines but a majority of my business calls from the office
> and clients will be routed through Asterisk. Currently I use a SIP phone
<snip> 
> Where I'll be moving will more than likely be installing broadband from
> Adelphia Cable 256up 3mbit down unless I have a valid reason to require
> the 512up/4mbit down prem. package at approximately 80 a month. I don't
> have any personal experience with them since I do live in NJ and will be
> relocating to FL. Any advise would greatly appreciated.
<snip>

Good luck with Adelphia. My experience is that the service is VERY
flakey. Sure, you can occasionally get the 3Mb down, rarely get the
256Kb up, but the norm seems to have LOTS of service outages that last
5 seconds to a minute. I also found that as soon as school let out,
bandwidth and latency SUCKED. It also frequently went offline for hours
at a time (3 days in one case.) My normal upload was 5Kb, and download
was 100Kb. IMHO, cable is not a good medium for VOIP (at least
adelphia's service... I've heard other cable companies are better.)

When called about it, Adelphia claims that their service is designed for
web browsing and not interactive applications. WTF???

It would be interesting to hear others experiences.


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