From: Joe A (groupstudy@comcast.net)
Date: Thu Nov 07 2002 - 11:36:06 GMT-3
Just to clarify, you can't plug an IP phone into an FXS port, as you say
you did in the original message. FXS ports are only for analog phones,
but I assume you already know that.
Another point, the Cisco IP phone is a 3 port switch, not a hub, and
that is a very important distinction.
Joe
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Deepesh Chouhan
Sent: Wednesday, November 06, 2002 2:01 PM
To: steven.j.nelson@bt.com; jaroslawz@hotmail.com;
ccielab@groupstudy.com
Subject: RE: Voice question
Hi
Not sure about hardware compatability here.
Cisco phone is a digital device. I call it, in it's barebone form as, 3
port ethernet hub + a headset + voice analog to digital + some cool
features :)
Also we need a voice-gateway and a call manager. Also most of the times
it is connected to 3550 ethernet ports
thanks
deepesh
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> steven.j.nelson@bt.com
> Sent: Wednesday, November 06, 2002 3:30 AM
> To: jaroslawz@hotmail.com; ccielab@groupstudy.com
> Subject: RE: Voice question
>
>
> Jarek
>
> So versions of code have problems with standard phones in dual fxs
> mods where the phone is in port 2 rather than port 1.
>
> Is your fxs module a dual ? If so which port is the phone plugged
> into, if it is in port 2 then try plugging it into port 1.
>
> Thanks
>
> Steve
> CCIE#10055
>
> -----Original Message-----
> From: Jaroslaw Zak [mailto:jaroslawz@hotmail.com]
> Sent: 06 November 2002 10:59
> To: ccielab@groupstudy.com
> Subject: Voice question
>
>
> Hi,
>
> Suppose you have simple case where IP phone is plugged to FXS port of
> your router, you have completed standard voice config:
>
> dial-peer voice 1 pots
> destination-pattern 111
> port 1/0/0
>
> dial-peer voice 2 voip
> destination pattern 222
> session target...
>
> then when you pick up the hook and try to dial 222 you get constant
> signal all the time, even during dialing and of course call is not
> placed. Any idea
>
> what could that be?
>
> Cheers
> Jarek
>
>
>
>
>
>
> >From: "Donny MATEO" <donny.mateo@sg.ca-indosuez.com>
> >Reply-To: "Donny MATEO" <donny.mateo@sg.ca-indosuez.com>
> >To: "Szeto Jeff" <jytszeto@hotmail.com>
> >CC: ccielab@groupstudy.com, nobody@groupstudy.com
> >Subject: Re: 3550 root guard and loop guard
> >Date: Wed, 6 Nov 2002 18:02:27 +0800
> >
> >Root guard, is used to make sure the port will never become a
> root port. It
>
> >works in such as way
> >that if the spanning tree calculation result on the port with the
> >root guard configured selected as the rootport (meaning a bpdu is
> >received on this interface with higher bridge ID), the port is put
> >in incosistent state (read as blocked), and the spanning tree
> will select
> >another port as the root
> >port.
> >
> >For loopguard, what it do is to make sure that your Root port
> and alternate
>
> >will never become a
> >Designated port for "other" switch.
> >So in other words, your switch will never be the switch in the root
> >path for others. Imagine if you're on access switch and suddenly the
> >uplink of the access
> switch became
>
> >the Designated port of
> >the distribution switch, something must be wrong. Use loopguard
> to prevent
> >this from happening.
> >
> >That is my understanding, perhaps other can give more.
> >Donny
> >
> >
> >
> > "Szeto Jeff"
> > <jytszeto@hotmail To:
> >ccielab@groupstudy.com
> > .com> cc:
> > Sent by: Subject: 3550
> root guard
> >and loop guard
> > nobody@groupstudy
> > .com
> >
> >
> > 06-11-2002 16:45
> > Please respond to
> > "Szeto Jeff"
> >
> >
> >
> >
> >
> >
> >Hi Group,
> >
> >I am reading the config guide and do not clear about the root and
> >loop guard.
> >
> >Why root guard prevent the remote switch that connecting to the local
> >switch from becoming the root?
> >The following, about the loop guard, is copied from the guide:
> >"You can use loop guard to prevent alternate or root ports from
becoming
> >designated ports because of a failure that leads to a
> unidirectional link"
> >Actually, what the loop guard do?
> >
> >Thank you in advance.
> >
> >Jeff
> >
> >_________________________________________________________________
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