I have some dial-up users getting slow connection speeds, and also cannot get any V.92 connections working.
Hoping someone can lend some advice.
Sorry if the explanation is long, but I want to give you all the information.
First, here is my Total Control configuration:
(2) Hiper DSP's, v.3.5.12
Hiper ARC, v.5.3.2
Hiper NMC v.8.6.3
(2) 130amp Power Supplies
I have to CT1's to the DSP Cards, Trunk settings on the DSP cards are listed at the bottom of this message for your info.
I started seeing some users report slow connection speeds, and so I started comparing my performance to another provider in town who I know is also running Total Control, and I'm pretty sure with CT1 lines, but I don't know any technical details of their setup. On a machine in my office I've tested with both a Lucent/Agere V92 winmodem and a USR Sportster External V.92.
Dialing into my own equipment I consistently get and maintain 45333-46666 connections. Not bad, but with the same phone line, same modems, same everything, when I dial the other provider, I get 49333 every time. I have some several users connecting to my equipment and getting 49333,50666, or 52000, even some using the same Lucent/Agere modems, but I can't do it myself. I have some users that might connect at 50666 or 49333 five times in a row and then get 21K the next time. The worst part of it all is that I have some users that can connect to the other provider at 49333 all day long and can't get better than 28800 dialing into my equipment. This tells me something is wrong.
Both of my "live" DSP cards are doing the same things to several different users at different times. At the same time some users have really poor connections, I have other users on the same DSP card with excellent stable connections. I've tried swapping out for some spare DSP's, and got the same results. Although I didn't see how it would help, I also tried swapping out the ARC, and got the same result.
I placed a trouble ticket with the Telco today, and then had the local technician on the phone while he tested both my circuits. For about 30 minutes straight there were absolutely NO errors on the CT1's. Everything is testing perfectly. One thing that worries me is my trunk settings, and although the telco tech was able to confirm my Framing and Line Coding settings for the Trunks, he had no idea about some of the other options under trunk settings. I have tried playing with the "Transmit Line Build Out" and "Receiver Gain" settings, but they don't seem to make any significant difference, unless I'm just not getting the right combination.
Also - on the trunk settings, I probably have the wrong "Primary Switch Type", but have no idea what it should be. I know that the Telco CO is using an Ericcson switch, but that's all the info I could get out of them. Any idea what it should be?
In addition to the slow-connection problems, I can't get any V.92 connections at all. V.90/V.42 is as good as it gets. But my understanding is that I have the right hardware and the right code to do it. So is this also maybe related to the same problem causing some users to have occasional slow connections?
Any help would be greatly appreciated. Again, Sorry for the long email.
Thanks,
Joel
Fox Computers
---- My DSP Trunk Settings ----
Framing Mode dsx1ESF
Line Coding Options dsx1AMI
Circuit Identifier
Loopback Configuration dsx1NoLoop
Signal Mode robbedBit
Transmit Clock Source loopTiming
NIC Type longHaul
Response to Remote Loopback ignore
Jitter Attenuation attenJitterOnRcvr
Transmit Line Build Out dB0pt0
Dial In Address noAddress
Dial In/Out Trunk Start Signal Type wink
Ack Wink On Dial In Address Info Received disabled
Dial Out Address Delay 70
Dial In/Out Trunk Type eAndMTypeII
Primary Switch Type priSw5ESS
Idle Byte Pattern 254
Receiver Gain dB12
Tone Type dtmf
Number of DTMF Tones 4
Send Code dsx1SendNoCode
External Signaling Mode (will take effect next boot) none
Overlap Receiving Mode disable
Overlap Receiving Inbound Digits Expected 12
Overlap Receiving Timeout Delay 12
