- USR-TC - mailman.xmission.com

(usr-tc) HiPER Dsp Vs Quad Modem
by Paul Oster 29 Sep '99

29 Sep '99

Ok, I've brought this up with 3com tech support, and they have not been able to answer my questions... I run approximately 8-10% Lost-Carrier Rates on my Quad Modem based chassis. On my DSP based chassis, that number is 15-17%. I can attribute 1 in 10 calls dropping to flakey phone lines, poor client modems etc, but beyond that, I have to question what is going on. I have tested to eliminate T1's from the equation by switching the 2 spans that plugged into the Quad-Chassis with the 2 from the DSP-Chassis, and the results are exactly the same (24 hour test period in both cases) Now I've got 7 dsp cards in service (2 chassis split 5/2) and both chassis show the 15+% loss. Any suggestions as to why these dsp modems are more prone to dropping connections? DSP Code 2.0.81 ARC Code 4.1.59-6 NMC 6.2.17 Thanks Paul

3 2

(usr-tc) Intermittent static on lines...
by Christopher Arlis Hanes 29 Sep '99

29 Sep '99

I'm having a problem with static coming and going on my PRIs. The effect then is that users are unable to temporarily dial in - the modems aren't able to negotiate a connection. I'm fairly certain the interference is being produced on the utp cat 5 cable running about 25 feet on a ladder rack from the demarc point to my boxes. I'm planning on installing shielded cable immediately but was wondering if anyone has run into similar problems and has some advice? What is the best way to measure the noise on the line? I noticed under Performance Monitor on modems you can get s/n ratio info for each connection. What are acceptable levels? Thanks, Chris Hanes - To unsubscribe to usr-tc, send an email to "majordomo(a)xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.

2 1

(usr-tc) Ascend Pipelines
by jeff.binkley＠asacomp.com 29 Sep '99

29 Sep '99

We have 3 Ascend Pipeline 50/75 customers connecting to our TC chassis'. In each case we give them a static IP address via Radius. In all cases we cannot ping the static address (i.e. Ascend doesn't respond) yet the users behind the pipeline work fine adn we can telnet into the Ascend if we add a static route for port 23 to the static IP address. Does anyone know how to correct this ? It makes troubleshooting more difficult when ping doesn't work. Thanks, Jeff Binkley ASA Network Computing CMPQwk 1.42 9999 - To unsubscribe to usr-tc, send an email to "majordomo(a)xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.

3 2

(usr-tc) 3Com, Please Address This
by Greg Coffey 29 Sep '99

29 Sep '99

Enclosed is some dialogue with a customer of mine. ************ Bill, thanks for the feedback. Trib uses Ascend servers for their modems. We use 3Com (merged with USR) exclusively. We've noted that some subscribers that dial in using 3Com modems connect FASTER with the Ascend than the 3Com. In fact, they never connect >33.6 with the 3Com servers but consistently with the Ascends at a v.90 rate. I pointed out the problem to 3Com about a year ago and there was not much interest on their part at the time. A couple months ago, it came up again. This time there was more interest and discussion. 3Com tells me that there is a bug in the Ascend server software that permits this anomaly. The number of subscribers that this impacts is small (I believe), though I've not really spent much time regarding it. 3Com told me earlier that if they fixed the software, it would break other modems connect rates and even connectivity. One of my techs (lives in Mills) can connect to Trib from home under the same circumstances as you. I gave him a Courier v.everything to try last week with the latest firmware. Same results as his Sportster model. We are running current software on our end too. We just spent thousands to upgrade our quad modems to the newer hiper design, no change. We added a hiperarc, again newer design and, again, thousands more invested. No change. We did dump the Sportster modem registers and send them to a 3Com engineer both a year ago and more recently. I've not heard anything about it for about a month since the last time it came up. I've looked at Ascend equipment but so far have stayed with 3Com. Baffles me too why brand-x modems work better with brand-y's servers. Why brand-x can't or won't resolve the issue baffles me too. The 3Com servers are not junk. We do have lots of subscribers that can connect to our servers and getting v.90 connection rates. I think we've dealt with maybe 6 or so people that are in your situation. Perhaps the number is higher but they aren't aware of it. I don't have an answer for you at this point but will forward this to 3Com. At 08:15 PM 9/28/99 -0600, you wrote: >I signed up today and got onto your system. > >It is only a few hours, but so far I'm not impressed with the speed over >Trib.com. > >First of all, I cannot connect at as fast a speed. > >I have a USR Sportster Voice 56k v.90 modem model 00178501 with the latest >drivers and firmware. > >With trib.com, I can connect sometimes @ 45,333 and always @ 37,333. > >I tried your 3 numbers: > > 234-2088 26,400 most of the time, 28,800 sometimes. > 234-6324 same > 266-4165 31,200 all the time. > >I tried several file download tests between the two systems and trib won >handily. > >I will do some more comparing over the next few days, but it isn't what I >was hoping for. > >If you have any other ideas, I would love to hear them. > >Thanks, > >Bill xxxxx > >-----Original Message----- >From: Greg Coffey <gcoffey(a)vcn.com> >To: Bill >Date: Friday, September 10, 1999 8:45 AM >Subject: Re: > > >>We have 3 separate T1's to the Internet and are getting a fract T3 within >>two months. You are welcome to try us and compare for yourself. Sign up >>online or come by the store. If you don't like our service, I will refund >>your fee for the month. We are in the process of a major upgrade that >>takes place on September 20th. That will make us even better than we are >now. >> >> >>At 06:48 AM 9/10/99 -0600, you wrote: >>>I am in Casper - in the Sunrise 8 area. >>> >>>I am looking for bandwidth to the net overall. >>> >>>I can connect @ 37,333 to Trib and maintain connection. >>> >>>I can connect @ around 45,000, but the connection is not stable. Thanks, Greg Coffey, Visionary Communications V 307-234-5443 F 307-234-5446 ===================================================================== 100 N. Center St., Casper, WY 82601 WWW.VCN.COM - To unsubscribe to usr-tc, send an email to "majordomo(a)xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.

6 8

RE: (usr-tc) Web Ramps ?
by jeff.binkley＠asacomp.com 29 Sep '99

29 Sep '99

u>|-----Original Message----- u>|From: owner-usr-tc(a)lists.xmission.com u>|[mailto:owner-usr-tc@lists.xmission.com]On Behalf Of Jeff Binkley u>|Sent: Tuesday, September 28, 1999 9:08 AM u>|To: usr-tc(a)lists.xmission.com u>|Subject: (usr-tc) Web Ramps ? u>| u>| u>| u>| u>|We are still running HiPerArc code 4.1.64 due to 4.1.56 breaking the u>|ability of older Web Ramps to connect. We are looking to go to a u>newer |version of HiPerArc code. Does anyone know if this problem is u>fixed in |the newer code ? I couldn't find it in the release notes. u>Also does |anyone know if the intermittient loss of Radius accounting u>records is |fixed either ? u>| u>4.1.56? What were you given that for? Does 4.1.59-6 not work for you u>as well? u>There have been no specific WebRamp issues resolved. There have been u>fixes to PPP u>strict checking on HARC and some interaction changes involving the DSP u>card. These fixes are available in 4.2.32-1 and shortly in a new 4.1 u>service release. u>If you do not need OSPF, wait for the 4.1 service release or open a u>support ticket to get it as an ER. u>As for the RADIUS accouting record loss. A few items have been u>resolved that may u>casue this symptom. They are available in a 4.1.x ER now (if you open u>a ticket). u>4.2.32-1, or you can wait for the service release. Opening a ticket u>would be the u>better option. Since different factors and configurations may result u>in the loss u>of the packet, until further inestigation is done, a fix for your u>problem cannot u>be guaranteed. Mike, That was a typo on my part. We are running 4.1.64 instead of 4.1.59-6 because, as I understand it, you folks put a fix in 4.1.59-6 in the HiPerArc code to fix the timing problem you were having with the DSP code. When this happened, it broke the ability for certain Web Ramps to connect. Going back to 4.1.64 was the only solution. Krish was aware of this. So I am not sure, based upon your comments, whether web ramps will work again or not with the 4.2.32-1 code. As for the accounting record loss, this has been a problem for some time now. I don't know exactly what code release introduced the problem but I know we cannot turn on concurrency checking on the S/A software because after a few hours we will start getting calls about folks not being able to connect. Checking the S/A users table will show a connection but looking in the HiPerArc they aren't connected. Thanks, Jeff Binkley ASA Network Computing CMPQwk 1.42 9999 - To unsubscribe to usr-tc, send an email to "majordomo(a)xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.

2 1

(usr-tc) HiperDSPs to HiperArcs
by Mike Wilker 29 Sep '99

29 Sep '99

I keep hearing 7 DSPs per Arc. Is this a set maximum or a practical max if you are running lots of services? Can I run 8 DSPs on one Arc if I'm just doing basic dial-up with no tunneling and such? Mike Wilker Operations Manager Local Link, Inc. - To unsubscribe to usr-tc, send an email to "majordomo(a)xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.

3 2

(usr-tc) Web Ramps ?
by jeff.binkley＠asacomp.com 28 Sep '99

28 Sep '99

We are still running HiPerArc code 4.1.64 due to 4.1.56 breaking the ability of older Web Ramps to connect. We are looking to go to a newer version of HiPerArc code. Does anyone know if this problem is fixed in the newer code ? I couldn't find it in the release notes. Also does anyone know if the intermittient loss of Radius accounting records is fixed either ? Thanks, Jeff Binkley ASA Network Computing CMPQwk 1.42 9999 - To unsubscribe to usr-tc, send an email to "majordomo(a)xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.

3 2

(usr-tc) Netserver FC3
by Martin Lathoud 28 Sep '99

28 Sep '99

Hi, you advised me to check for chip revision on my Netserver card about the crash problem. I had a chance to do it this morning, and guess what? It's a FC3.. Since it seems to be a known problem, will 3Com do something even without contract support (as far as you know) ? Thanks, Martin - To unsubscribe to usr-tc, send an email to "majordomo(a)xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.

2 1

RE: (usr-tc) need iformation about hiper DSP card
by liping＠netsol.net 28 Sep '99

28 Sep '99

Get the ISDN PRI instead of trunk T-1. Sorry, No Franch. Liping -----Original Message----- From: owner-usr-tc(a)lists.xmission.com [mailto:owner-usr-tc@lists.xmission.com]On Behalf Of Simicro - RAKOTOBE Tatamo Sent: Wednesday, September 22, 1999 2:00 AM To: 'usr-tc(a)xmission.com' Subject: (usr-tc) need iformation about hiper DSP card Hi, I'm a student from Madagascar and I'm doing now a training at an ISP. We want to give ISDN access to our Clients that why I contact you, we use now Total control with Quad Modem card and Edge Server card. Can you give me information related in ISDN, Hiper DSp card, Dual PRI card, their price, and other technical information. Thank you. PS: is it possible to send the answer in french because I'm francophone. *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* tatamo(a)simicro.mg na koa trakotob(a)syfed.refer.mg hafa koa shiny_lotus(a)geocities.com MADAGASIKARA *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* - To unsubscribe to usr-tc, send an email to "majordomo(a)xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message. - To unsubscribe to usr-tc, send an email to "majordomo(a)xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.

1 0

(usr-tc) need iformation about hiper DSP card
by tatamo＠simicro.mg 28 Sep '99

28 Sep '99

Hi, I'm a student from Madagascar and I'm doing now a training at an ISP. We want to give ISDN access to our Clients that why I contact you, we use now Total control with Quad Modem card and Edge Server card. Can you give me information related in ISDN, Hiper DSp card, Dual PRI card, their price, and other technical information. Thank you. PS: is it possible to send the answer in french because I'm francophone. *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* tatamo(a)simicro.mg na koa trakotob(a)syfed.refer.mg hafa koa shiny_lotus(a)geocities.com MADAGASIKARA *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* - To unsubscribe to usr-tc, send an email to "majordomo(a)xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.

1 0