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

[Mark Tinka]

On Monday 28 March 2005 18:14, Aaron Leonard wrote:
> Mark,

Hello Aaron.

>
> Troubleshooting modems
> http://www.cisco.com/en/US/tech/tk801/tk36/technologies_tech_note09186a0080
>094eb9.shtml

Cheers.

Mark.

>
> 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.
> >>_______________________________________________
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> >>https://puck.nether.net/mailman/listinfo/cisco-nsp
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> >
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