Ascend Archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: (ASCEND) K56..

Andy, I had the same problem with the Channelized T1s with both
AMI/SF and B8ZS/ESF.  The Telco is using Northern Telecom DMS100
switches.  The only way I could get anything at all higher than
33.6 was to replace the T1s with PRI circuits.  I now get as
good as 48000 and have tried several K56Flex modems.  I had
an Ascend rep fly in and help verify the solution.  Now, why
this is so I do not know.  One of the other great features with
the local ISDN PRI service is that I now get the Caller ID 
feature which is getting rather important with scammers out there.

I can tell you that I went through ever possible combination of 
settings with my 4004s (V5.0Ap33) and could not come up with
anything that would get me the greater speed.  One of the best
things to use is the "modemdiag" debug command to see what your
line quality is to your customers.  Even still, there is something
greatly different, besides the obvious, between the trunk side T1s 
and ISDN PRIs.  Another issue for you will be cost and availability
of ISDN.  Since the Telco could not provide us with 56Kb speeds
on the Trunk Side T1s, they gave us a break on the PRIs, so the 
cost was not an issue.  I have this funny feeling that the Maxen
really like ISDN and not trunk side T1s.

		Neil 

On Wed, 26 Nov 1997, Andy Walden wrote:

> 
> On Wed, 26 Nov 1997, Matt Holdrege wrote:
> 
> > At 09:35 AM 11/26/97 -0600, Andy Walden wrote:
> > >I have been doing some comparisons and keeping track of numbers lately, it
> > >appears we aren't getting crap for 56k connections. We currently run
> > >channelized T1s with AMI and D4 on them. I am running some in with B8ZS
> > >and ESF for testing. I seriously can't imagine that making all the
> > >difference though. I do have a competitor, runs Livingston, as well as
> > >AMI/D4 and claims he is getting 48-52000 most of the time. Any
> > >suggestions?
> > 
> > You need to make sure there are no A/D conversions on your T1. It must be
> > trunk side and digital all the way. I prefer to visit the C.O. myself and
> > trace the wire. :)
> 
> 
> I'm pretty sure that there are not, but what would tell me. We are the C/O
> for some of our modems and should be able to figure it out. Some of our
> lines currently go through a DAX, would tha be an A/D conversion? I have
> actually asked this question several times of some of the telco folk and
> they are for the most part convinced it should be straight though.
> 
> Andy
> 
> ++ Ascend Users Mailing List ++
> To unsubscribe:	send unsubscribe to ascend-users-request@bungi.com
> To get FAQ'd:	<http://www.nealis.net/ascend/faq>
> 

Neil Movold                             Phone: (441) 296-1800 ext. 28
Director of Technology                  Fax: (441) 295-1149
Internet (Bermuda) Limited              E-Mail: nmovold@ibl.bm
P.O. Box HM 2445                        WWW: http://www.ibl.bm
Hamilton, Bermuda, HM JX                WWW: http://www.bermuda.bm

++ Ascend Users Mailing List ++
To unsubscribe:	send unsubscribe to ascend-users-request@bungi.com
To get FAQ'd:	<http://www.nealis.net/ascend/faq>
References: