From: Jonathan V Hays (jhays@jtan.com)
Date: Mon Apr 21 2003 - 23:03:58 GMT-3
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> Behalf Of Dennis Dumont
> Sent: Monday, April 21, 2003 8:56 PM
> To: Jonathan V Hays
> Cc: Groupstudy CCIELab
> Subject: RE: connect a modem on serial port
>
>
> > > -----Original Message-----
> > > May I connect a 1-T or 2-T WIC card to a modem
> > for
> > > dial-up communication?
> No.
>
> > "physical-layer async"
> This is only available in the Async/Sync ports, and
> those ports top at at 115200 async and 128000 sync.
>
> The WIC-1T, WIC-2T, NM-4T, and the two fixed serial
> ports on all the 2500's (except for the extra ports in
> the 2520, 2521, 2522, and 2523 which are clearly
> marked "Low Speed Async/Sync) and the 3810 are High
> Speed, Sync only.
http://www.cisco.com/en/US/products/hw/modules/ps3129/products_tech_note
09186a00800b0859.shtml#cfg
You may be correct as I have not tried connecting a modem to a
synchronous serial port myself. However, the above recent document
(dated Feb 21, 2003) clearly states that it is possible:
"For more information on configuring the WIC-1T card, refer to . If your
platforms suports async then use the command physical-layer async for
async mode. Such an application is useful to connect an external modem
to the router."
It is certainly possible that the author of this document made an
incorrect assertion. But since the synchronous serial port is largely
software controlled it seems reasonable that you could force it into
async mode.
Does anyone have any hands-on experience with this?
-Jonathan
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