[cisco-nas] Re: [c-nsp] AS5300 Dropped Calls

[Aaron Leonard]

Mark,

Troubleshooting modems
http://www.cisco.com/en/US/tech/tk801/tk36/technologies_tech_note09186a0080094eb9.shtml

Regards,

Aaron

---

Eric Knudson wrote:

>(dropping nsp and adding nas)
>
>
>On Thu, 24 Mar 2005 17:46:05 +0200, Mark Tinka
><mtinka at africaonline.co.sz> wrote:
>  
>
>>Hi all.
>>
>>I have a situation where some customers may drop calls after a few
>>seconds-to-minutes of dial-up connection. In some cases, either the phone
>>line (noisy), modem or modem driver has been the cause, and problem
>>rectified.
>>
>>In other cases, phone line's good (even less than <= 800m from CO), modem and
>>modem configuration are in order, but the line will still cut after a few
>>moments of connectivity.
>>
>>The AS5300 has been configured for 56K access. I have tried different
>>modulation schemes to try and solve this problem, testing v.90 and v.92 (v.34
>>won't offer over 33.6Kbps, and some customers can support 52Kbps with no line
>>drops, but haven't tested it long enough to confirm problem resolution).
>>
>>So I left the async lines to auto-negotiate line parameters with the customer
>>once they connect, but that doesn't seem to have solved the problem. What's
>>strange is that a previous purely analog NAS didn't have this problem (unless
>>the customer had an idle-timeout set).
>>
>>Anyone have any idea how the AS5300 can be tuned to deal with this? PRI lines
>>have been delivered on HDSL/G.703, and D-channel interfaces on the AS5300
>>aren't reporting any line errors.
>>
>>All help appreciated.
>>
>>Mark.
>>_______________________________________________
>>cisco-nsp mailing list  cisco-nsp at puck.nether.net
>>https://puck.nether.net/mailman/listinfo/cisco-nsp
>>archive at http://puck.nether.net/pipermail/cisco-nsp/
>>
>>    
>>
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