From: Joseph Eleazar (joseph_eleazar@hotmail.com)
Date: Sat Dec 13 2003 - 16:06:00 GMT-3
George,
We started to rollout IP phones at my company not too long ago and this is
what I've seen from working with our Cisco Advanced Services Engineer:
* The Cisco 7960 Phones can work on switches without 802.1q/802.1p support,
but then you won't be able to utilize Qos. The cisco swtich that you
connect to, does it provide inline power? If it doesn't, I'm guessing you
are powering up the phone with a power brick?
* You don't necessarily need to have a voice vlan configured for the phone
to work. If you do have a data and voice vlan configured, then you have to
make the data vlan the native vlan of the port and the voice vlan should be
configured as the auxiliary vlan of that same port. If you don't configure
an auxiliary vlan, then the phone should just join the data vlan. On some
modle of cisco swithes like 3524 or 2924, even though you configure the port
with a native vlan and an auxiliary vlan, you have to manually configure the
port as a trunk port, the newer models do that automatically when you define
an auxiliary vlan.
* Which ever vlan you use, just a data vlan, or data as the native and voice
as the auxiliary, the vlan that will provide DHCP, make sure that in the
DHCP scope, either option 150 or 66 is set to provide the IP address of the
call manager/tftp server for the phones config. Otherwise, just configure
that information statically on the phone.
* As far as connecting the phone to a non cisco device, you can BUT, the
inline power pinouts that cisco uses are different then what everyone else
uses as a standard. If you were powering your phone from a cisco switch
with inline power and now you connect it to a Nortel switch with inline
power, it will not work, you will need a power brick for the phone to work.
And vice-versa, if you have a nortel IP phone that works off a Nortel switch
with inline power and connect it to a Cisco switch with inline power, then
it will not work without a power brick either.
Hope this helped in some way.
JoeE
>From: "George Kadeishvili" <gogi@greennet.ge>
>Reply-To: "George Kadeishvili" <gogi@greennet.ge>
>To: <ccielab@groupstudy.com>
>Subject: OT: cisco ip phones Date: Fri, 12 Dec 2003 15:11:33 +0400
>
>Can I connect cisco IP phones to non-cisco switches? that is, switches
>without
>802.1q/802.1p support?
>I've tried, but it does not work. Phones will not see Call Manager. Also
>with
>cisco switch, it does not work, before you configure voice vlan.
>Is there any way for phones to communicate wih call manager over different
>kinds of networks, like hubs, other wendor switches, adsl links, etc?
>
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