(usr-tc) HiPER Dsp Vs Quad Modem
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
At 11:36 AM 9/29/99 -0500, "Paul Oster" <devious@minot.com> wrote:
DSP Code 2.0.81 ARC Code 4.1.59-6 NMC 6.2.17
Try bumping the ARC code up to 4.2.32, with that and 2.0.81 I'm seeing 8-10% failure rates. This has actually gone up from about 5% when I was running ARC 4.1.59-6/DSP 1.2.60. I'm hoping the next DSP upgrade gets the rate back down some. -- Kirk Mitchell-General Manager mitch@keyconn.net Keystone Connect Unlock Your World Altoona, PA 814-941-5000 http://www.keyconn.net - To unsubscribe to usr-tc, send an email to "majordomo@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.
I'll bet the difference is customers with Rockwell HCF modems. They connect more reliably to Quads. Not that they connect very reliably to *anything*... Mike Andrews (MA12) * mandrews@dcr.net * http://www.bit0.com/ VP, sysadmin, & network guy, Digital Crescent Inc, Frankfort KY Internet services for Frankfort, Lawrenceburg, Owenton, & Shelbyville "With sufficient thrust, pigs fly just fine." -- RFC 1925 On Wed, 29 Sep 1999, Paul Oster wrote:
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%.
- To unsubscribe to usr-tc, send an email to "majordomo@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.
participants (3)
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K Mitchell -
Mike Andrews -
Paul Oster