RE: [USR-TC] Connection - speed issue
Don't have a solution - but sharing my experience: First, dialing into a Hiper DSP, I always get 45K+, so I have to restrict my modem to V34 in order to do this. When I do, If I dial into an analog quad modem on a POTS line, I ALWAYS get 33600 for a connection. Dialing into my Hiper DSP's, same phone line, same computer, same modem, (when limited to V34) I can only get 26400. I've always assumed that it had to do with some loss of analog quality in the telco's AD conversion. But would be interested if any one does have a solution a solid reason as to why this is. I've suspected that the same quality-loss issue is responsible for the fact that I'm only getting 45-49K rather than 53K. At first, I thought it was DSP-related, but I don't think so. When dialing into my DSP's from another town 30 miles away (different telco) I can connect at 53333 every single time, with the same modem that only gets 45-49K here locally. In theory, I'm guessing that the other telco has better AD conversion. (I know it's not being converted again at my telco, because if it were, I wouldn't get the V.90 connection) -----Original Message----- From: Jim Mc Cay [mailto:jmccay@adsnet.com] Sent: Wednesday, April 23, 2003 9:33 AM To: usr-tc@mailman.xmission.com; jmccay Subject: [USR-TC] Connection - speed issue Hello, I'm hoping that and can get some input on a current project that my company is working on. We are in the process of converting are 5 quad-analog/digital v.32 total control modems and chassises to one newer total control chassis running all Hiper dsp 24 port modem cards and hiper arc routers and hiper nmc. I have the new chassis setup and working. I can dial in and connect and get out to the web. My problem is the customers that live close to our building can connect faster than 33.6 which is a good thing, but customers who live further out, connect at speeds of 28.8 or 26k or even slower. Those customers who connect slower when dialing in to this new modem pool, could connect at 31.2 or 28.8 when dialing in to the older v.34 quad analog chassises. My question is why do I have a down grade in speed moving up to newer faster equipment? Now the quad analog/digital v.34 modems have pots lines connected to the back of them. The hiper dsp cards have T1's connected to them for providing dial tone. Info on the chassises with the quad modems: 15 cards in each chassis quad analog/digital v.34 software version 6.1.86 Note: pots lines connected to back of cards not T1 lines 1 - Net Server card software version 3.8.1 20mb dram 2mb flash ram 1 - Network Mgmt card software ver 6.0.9 20mb dram 2mb flash ram Info on newer Total control chassis: 14 - High-density 24 channel hiper dsp cards software ver 3.5.12 Dram 8mb flash ram 2mb 2 - Hiper Arc Router cards software ver 5.3.3 dram 131mb flash ram 16mb 1 - Hiper NMC card software ver 8.7.3 dram 131mb flash ram 62mb Now, I do have v.92 enabled on the newer chassis and I've tried turning it off but the only difference with it off is, users seem to be able to login faster when they first dial up. The connection rate does not improve or degrade any. Again, how can I get my customers who are able to dial in to the older total control chassises and connect at 31.2 , dial in to the new chassis and connect at the same speed or better. Any help would greatly be appreciated. Thanks, jim _______________________________________________ USR-TC mailing list USR-TC@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/usr-tc
Somewhere in the calls path you are hitting some sort of RBS (robbed bit signalling.. ie a CT-1 perhaps?) That you are not hitting when calling in from place B. modemsite.com has an EXELLENT turorial of RBS and how it will screw up your speeds, or why you will see varying speeds from place to place. The short end of the story is that you are probibly never gonna get it fixed as you must convince the telco to send someone out to check each office interconnect. And even if that does happen the odds of them making any change is a bazillion to 1. -- Paul Farber Farber Technology farber@admin.f-tech.net Ph 570-628-5303 Fax 570-628-5545 On Wed, 23 Apr 2003, Joel - Fox Computers wrote:
Don't have a solution - but sharing my experience:
First, dialing into a Hiper DSP, I always get 45K+, so I have to restrict my modem to V34 in order to do this. When I do, If I dial into an analog quad modem on a POTS line, I ALWAYS get 33600 for a connection. Dialing into my Hiper DSP's, same phone line, same computer, same modem, (when limited to V34) I can only get 26400.
I've always assumed that it had to do with some loss of analog quality in the telco's AD conversion. But would be interested if any one does have a solution a solid reason as to why this is.
I've suspected that the same quality-loss issue is responsible for the fact that I'm only getting 45-49K rather than 53K.
At first, I thought it was DSP-related, but I don't think so. When dialing into my DSP's from another town 30 miles away (different telco) I can connect at 53333 every single time, with the same modem that only gets 45-49K here locally. In theory, I'm guessing that the other telco has better AD conversion. (I know it's not being converted again at my telco, because if it were, I wouldn't get the V.90 connection)
-----Original Message----- From: Jim Mc Cay [mailto:jmccay@adsnet.com] Sent: Wednesday, April 23, 2003 9:33 AM To: usr-tc@mailman.xmission.com; jmccay Subject: [USR-TC] Connection - speed issue
Hello,
I'm hoping that and can get some input on a current project that my company is working on. We are in the process of converting are 5 quad-analog/digital v.32 total control modems and chassises to one newer total control chassis running all Hiper dsp 24 port modem cards and hiper arc routers and hiper nmc. I have the new chassis setup and working. I can dial in and connect and get out to the web. My problem is the customers that live close to our building can connect faster than 33.6 which is a good thing, but customers who live further out, connect at speeds of 28.8 or 26k or even slower. Those customers who connect slower when dialing in to this new modem pool, could connect at 31.2 or 28.8 when dialing in to the older v.34 quad analog chassises. My question is why do I have a down grade in speed moving up to newer faster equipment?
Now the quad analog/digital v.34 modems have pots lines connected to the back of them. The hiper dsp cards have T1's connected to them for providing dial tone.
Info on the chassises with the quad modems: 15 cards in each chassis quad analog/digital v.34 software version 6.1.86 Note: pots lines connected to back of cards not T1 lines
1 - Net Server card software version 3.8.1 20mb dram 2mb flash ram
1 - Network Mgmt card software ver 6.0.9 20mb dram 2mb flash ram
Info on newer Total control chassis: 14 - High-density 24 channel hiper dsp cards software ver 3.5.12 Dram 8mb flash ram 2mb
2 - Hiper Arc Router cards software ver 5.3.3 dram 131mb flash ram 16mb
1 - Hiper NMC card software ver 8.7.3 dram 131mb flash ram 62mb
Now, I do have v.92 enabled on the newer chassis and I've tried turning it off but the only difference with it off is, users seem to be able to login faster when they first dial up. The connection rate does not improve or degrade any.
Again, how can I get my customers who are able to dial in to the older total control chassises and connect at 31.2 , dial in to the new chassis and connect at the same speed or better.
Any help would greatly be appreciated.
Thanks, jim
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On Wed, 23 Apr 2003, Paul Farber wrote:
The short end of the story is that you are probibly never gonna get it fixed as you must convince the telco to send someone out to check each office interconnect. And even if that does happen the odds of them making any change is a bazillion to 1.
Depending on your CLEC, you may get it fixed. We got trunking to one Brookly EO fixed once with ATT Local as the CLEC. It was hard to track down as the trunk was often full, and when calls hit the tandem switch, or if the user dialed-around with a "1010" number all was well. Another CLEC that routinely hunts this stuff down is Focal. Your mileage will vary greatly though depending on who the ILEC is. :) C
-- Paul Farber Farber Technology farber@admin.f-tech.net Ph 570-628-5303 Fax 570-628-5545
On Wed, 23 Apr 2003, Joel - Fox Computers wrote:
Don't have a solution - but sharing my experience:
First, dialing into a Hiper DSP, I always get 45K+, so I have to restrict my modem to V34 in order to do this. When I do, If I dial into an analog quad modem on a POTS line, I ALWAYS get 33600 for a connection. Dialing into my Hiper DSP's, same phone line, same computer, same modem, (when limited to V34) I can only get 26400.
I've always assumed that it had to do with some loss of analog quality in the telco's AD conversion. But would be interested if any one does have a solution a solid reason as to why this is.
I've suspected that the same quality-loss issue is responsible for the fact that I'm only getting 45-49K rather than 53K.
At first, I thought it was DSP-related, but I don't think so. When dialing into my DSP's from another town 30 miles away (different telco) I can connect at 53333 every single time, with the same modem that only gets 45-49K here locally. In theory, I'm guessing that the other telco has better AD conversion. (I know it's not being converted again at my telco, because if it were, I wouldn't get the V.90 connection)
-----Original Message----- From: Jim Mc Cay [mailto:jmccay@adsnet.com] Sent: Wednesday, April 23, 2003 9:33 AM To: usr-tc@mailman.xmission.com; jmccay Subject: [USR-TC] Connection - speed issue
Hello,
I'm hoping that and can get some input on a current project that my company is working on. We are in the process of converting are 5 quad-analog/digital v.32 total control modems and chassises to one newer total control chassis running all Hiper dsp 24 port modem cards and hiper arc routers and hiper nmc. I have the new chassis setup and working. I can dial in and connect and get out to the web. My problem is the customers that live close to our building can connect faster than 33.6 which is a good thing, but customers who live further out, connect at speeds of 28.8 or 26k or even slower. Those customers who connect slower when dialing in to this new modem pool, could connect at 31.2 or 28.8 when dialing in to the older v.34 quad analog chassises. My question is why do I have a down grade in speed moving up to newer faster equipment?
Now the quad analog/digital v.34 modems have pots lines connected to the back of them. The hiper dsp cards have T1's connected to them for providing dial tone.
Info on the chassises with the quad modems: 15 cards in each chassis quad analog/digital v.34 software version 6.1.86 Note: pots lines connected to back of cards not T1 lines
1 - Net Server card software version 3.8.1 20mb dram 2mb flash ram
1 - Network Mgmt card software ver 6.0.9 20mb dram 2mb flash ram
Info on newer Total control chassis: 14 - High-density 24 channel hiper dsp cards software ver 3.5.12 Dram 8mb flash ram 2mb
2 - Hiper Arc Router cards software ver 5.3.3 dram 131mb flash ram 16mb
1 - Hiper NMC card software ver 8.7.3 dram 131mb flash ram 62mb
Now, I do have v.92 enabled on the newer chassis and I've tried turning it off but the only difference with it off is, users seem to be able to login faster when they first dial up. The connection rate does not improve or degrade any.
Again, how can I get my customers who are able to dial in to the older total control chassises and connect at 31.2 , dial in to the new chassis and connect at the same speed or better.
Any help would greatly be appreciated.
Thanks, jim
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What 'magic words' did you use. I've found that unless I use the very correct terms they will not do much other than a cursury (sp?) inspection or will look for the wrong thing... and unless the error is so obvious to the tester that it needs fixed it may not go far from there. Ie calling in a trouble ticket saying that there are BPV's, CRC and Frame errors gets the thing fixed alot quicker than saying 'errors on the T' and letting them figure it out. What did you say to get something done?? -- Paul Farber Farber Technology farber@admin.f-tech.net Ph 570-628-5303 Fax 570-628-5545 On Wed, 23 Apr 2003, Charles Sprickman wrote:
On Wed, 23 Apr 2003, Paul Farber wrote:
The short end of the story is that you are probibly never gonna get it fixed as you must convince the telco to send someone out to check each office interconnect. And even if that does happen the odds of them making any change is a bazillion to 1.
Depending on your CLEC, you may get it fixed. We got trunking to one Brookly EO fixed once with ATT Local as the CLEC. It was hard to track down as the trunk was often full, and when calls hit the tandem switch, or if the user dialed-around with a "1010" number all was well.
Another CLEC that routinely hunts this stuff down is Focal.
Your mileage will vary greatly though depending on who the ILEC is. :)
C
-- Paul Farber Farber Technology farber@admin.f-tech.net Ph 570-628-5303 Fax 570-628-5545
On Wed, 23 Apr 2003, Joel - Fox Computers wrote:
Don't have a solution - but sharing my experience:
First, dialing into a Hiper DSP, I always get 45K+, so I have to restrict my modem to V34 in order to do this. When I do, If I dial into an analog quad modem on a POTS line, I ALWAYS get 33600 for a connection. Dialing into my Hiper DSP's, same phone line, same computer, same modem, (when limited to V34) I can only get 26400.
I've always assumed that it had to do with some loss of analog quality in the telco's AD conversion. But would be interested if any one does have a solution a solid reason as to why this is.
I've suspected that the same quality-loss issue is responsible for the fact that I'm only getting 45-49K rather than 53K.
At first, I thought it was DSP-related, but I don't think so. When dialing into my DSP's from another town 30 miles away (different telco) I can connect at 53333 every single time, with the same modem that only gets 45-49K here locally. In theory, I'm guessing that the other telco has better AD conversion. (I know it's not being converted again at my telco, because if it were, I wouldn't get the V.90 connection)
-----Original Message----- From: Jim Mc Cay [mailto:jmccay@adsnet.com] Sent: Wednesday, April 23, 2003 9:33 AM To: usr-tc@mailman.xmission.com; jmccay Subject: [USR-TC] Connection - speed issue
Hello,
I'm hoping that and can get some input on a current project that my company is working on. We are in the process of converting are 5 quad-analog/digital v.32 total control modems and chassises to one newer total control chassis running all Hiper dsp 24 port modem cards and hiper arc routers and hiper nmc. I have the new chassis setup and working. I can dial in and connect and get out to the web. My problem is the customers that live close to our building can connect faster than 33.6 which is a good thing, but customers who live further out, connect at speeds of 28.8 or 26k or even slower. Those customers who connect slower when dialing in to this new modem pool, could connect at 31.2 or 28.8 when dialing in to the older v.34 quad analog chassises. My question is why do I have a down grade in speed moving up to newer faster equipment?
Now the quad analog/digital v.34 modems have pots lines connected to the back of them. The hiper dsp cards have T1's connected to them for providing dial tone.
Info on the chassises with the quad modems: 15 cards in each chassis quad analog/digital v.34 software version 6.1.86 Note: pots lines connected to back of cards not T1 lines
1 - Net Server card software version 3.8.1 20mb dram 2mb flash ram
1 - Network Mgmt card software ver 6.0.9 20mb dram 2mb flash ram
Info on newer Total control chassis: 14 - High-density 24 channel hiper dsp cards software ver 3.5.12 Dram 8mb flash ram 2mb
2 - Hiper Arc Router cards software ver 5.3.3 dram 131mb flash ram 16mb
1 - Hiper NMC card software ver 8.7.3 dram 131mb flash ram 62mb
Now, I do have v.92 enabled on the newer chassis and I've tried turning it off but the only difference with it off is, users seem to be able to login faster when they first dial up. The connection rate does not improve or degrade any.
Again, how can I get my customers who are able to dial in to the older total control chassises and connect at 31.2 , dial in to the new chassis and connect at the same speed or better.
Any help would greatly be appreciated.
Thanks, jim
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On Wed, 23 Apr 2003, Paul Farber wrote:
What 'magic words' did you use.
"Number Portability" and "We'll Leave". We did leave eventually as ATT got their hands into ACC and took our local switch tech away.
I've found that unless I use the very correct terms they will not do much other than a cursury (sp?) inspection or will look for the wrong thing... and unless the error is so obvious to the tester that it needs fixed it may not go far from there.
We were very lucky at ACC/ATT. There was an old school switch tech who had retired (forced to retire) from NYNEX and then took a job with ACC. He was not too smart with modems, but he knew all about the muxes that Bell Atlantic was using, and new that mismatches on EO trunks was common due to a bit of weirdness with the Fujitsu gear and how techs at BA were trained. Essentially, they were setting the muxes up correctly, but what they thought were doing to save out to nvram, was not saving to nvram. So if the mux power-cycled, it came back up with some improper settings. We'd give him problem exchanges and he'd open a ticket with VZ. He was eventually fired when ATT fully took over ACC, and we left shortly after. Two places I work with now are using Focal. The main reason is that during business hours we can go to the co-lo and follow up on a ticket with a switch tech. Things are easier to get fixed when you get face-to-face with an employee.
Ie calling in a trouble ticket saying that there are BPV's, CRC and Frame errors gets the thing fixed alot quicker than saying 'errors on the T' and letting them figure it out.
What did you say to get something done??
We had support track problem callers, determine what exchange they were coming from and go from there. Charles
-- Paul Farber Farber Technology farber@admin.f-tech.net Ph 570-628-5303 Fax 570-628-5545
On Wed, 23 Apr 2003, Charles Sprickman wrote:
On Wed, 23 Apr 2003, Paul Farber wrote:
The short end of the story is that you are probibly never gonna get it fixed as you must convince the telco to send someone out to check each office interconnect. And even if that does happen the odds of them making any change is a bazillion to 1.
Depending on your CLEC, you may get it fixed. We got trunking to one Brookly EO fixed once with ATT Local as the CLEC. It was hard to track down as the trunk was often full, and when calls hit the tandem switch, or if the user dialed-around with a "1010" number all was well.
Another CLEC that routinely hunts this stuff down is Focal.
Your mileage will vary greatly though depending on who the ILEC is. :)
C
-- Paul Farber Farber Technology farber@admin.f-tech.net Ph 570-628-5303 Fax 570-628-5545
On Wed, 23 Apr 2003, Joel - Fox Computers wrote:
Don't have a solution - but sharing my experience:
First, dialing into a Hiper DSP, I always get 45K+, so I have to restrict my modem to V34 in order to do this. When I do, If I dial into an analog quad modem on a POTS line, I ALWAYS get 33600 for a connection. Dialing into my Hiper DSP's, same phone line, same computer, same modem, (when limited to V34) I can only get 26400.
I've always assumed that it had to do with some loss of analog quality in the telco's AD conversion. But would be interested if any one does have a solution a solid reason as to why this is.
I've suspected that the same quality-loss issue is responsible for the fact that I'm only getting 45-49K rather than 53K.
At first, I thought it was DSP-related, but I don't think so. When dialing into my DSP's from another town 30 miles away (different telco) I can connect at 53333 every single time, with the same modem that only gets 45-49K here locally. In theory, I'm guessing that the other telco has better AD conversion. (I know it's not being converted again at my telco, because if it were, I wouldn't get the V.90 connection)
-----Original Message----- From: Jim Mc Cay [mailto:jmccay@adsnet.com] Sent: Wednesday, April 23, 2003 9:33 AM To: usr-tc@mailman.xmission.com; jmccay Subject: [USR-TC] Connection - speed issue
Hello,
I'm hoping that and can get some input on a current project that my company is working on. We are in the process of converting are 5 quad-analog/digital v.32 total control modems and chassises to one newer total control chassis running all Hiper dsp 24 port modem cards and hiper arc routers and hiper nmc. I have the new chassis setup and working. I can dial in and connect and get out to the web. My problem is the customers that live close to our building can connect faster than 33.6 which is a good thing, but customers who live further out, connect at speeds of 28.8 or 26k or even slower. Those customers who connect slower when dialing in to this new modem pool, could connect at 31.2 or 28.8 when dialing in to the older v.34 quad analog chassises. My question is why do I have a down grade in speed moving up to newer faster equipment?
Now the quad analog/digital v.34 modems have pots lines connected to the back of them. The hiper dsp cards have T1's connected to them for providing dial tone.
Info on the chassises with the quad modems: 15 cards in each chassis quad analog/digital v.34 software version 6.1.86 Note: pots lines connected to back of cards not T1 lines
1 - Net Server card software version 3.8.1 20mb dram 2mb flash ram
1 - Network Mgmt card software ver 6.0.9 20mb dram 2mb flash ram
Info on newer Total control chassis: 14 - High-density 24 channel hiper dsp cards software ver 3.5.12 Dram 8mb flash ram 2mb
2 - Hiper Arc Router cards software ver 5.3.3 dram 131mb flash ram 16mb
1 - Hiper NMC card software ver 8.7.3 dram 131mb flash ram 62mb
Now, I do have v.92 enabled on the newer chassis and I've tried turning it off but the only difference with it off is, users seem to be able to login faster when they first dial up. The connection rate does not improve or degrade any.
Again, how can I get my customers who are able to dial in to the older total control chassises and connect at 31.2 , dial in to the new chassis and connect at the same speed or better.
Any help would greatly be appreciated.
Thanks, jim
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participants (3)
-
Charles Sprickman -
Joel - Fox Computers -
Paul Farber