From: Martin D. Fierbaugh (marty@networkwv.com)
Date: Fri Dec 12 2003 - 13:09:22 GMT-3
I am testing some 7960s and Call Manager Express (3660) right over a
3Com hub (no, I would never deploy this way). The hub/switch doesn't
have to support dot1q. However, be aware that you have no way of
distinguishing phone from PC traffic. It is possible to take out your
voice traffic with a good Divx download.
BTW - line power is optional. Power bricks can be used.
ISL is not supported on any Cisco IP phone I have seen and skinny (2000)
is still the protocol.
As for using ADSL as transport, yes. It is technically possible. Your
QoS is shot though as you probably have no control over the QoS on that
adsl line.
Also worth noting your "default route" on your phone has to be the Call
Manager meaning that the phone and CM need to be on the same subnet.
Clever L2TP and you can get around it. I have already been told this
configuration is 'unsupported' by Cisco.
Call Manager Express is fairly impressive though. Lots of knobs. I
didnt think it would have the number of features that it does.
**********************************
Martin D. Fierbaugh, CCNP
Manager IP Routing
NTELOS Advanced Data Engineering
(w) 304.353.8916
(m) 304.415.0427
**********************************
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Hoyle, Anthony (AL)
Sent: Friday, December 12, 2003 6:51 AM
To: 'George Kadeishvili'
Cc: 'ccielab@groupstudy.com'
Subject: RE: cisco ip phones
I am sure you have to have specific line cards with different voltage
parameters. If the phones are coming on, do you have DHCP configured
Correctly? If so are the ports set up as trunks, one vlan for the pc,
and the other for the phone to download it's image etc... -I guess
depending on the phone though :) My workaround is to add the phones ,
IP addresses and the phone numbers in call manager (that would be
ridiculous for a handful of IP phones..) -If your phones are getting IP
addresses from DHCP and see if it works that way.
Now about the non-cisco switches, I haven't seen it, so anyone out there
shed light on this if you can.. I also remember the only other weird
thing is the phones use the skinny protocol to talk to each other, but
that may have changed /w new phones, but this is probably irrelevant to
your problem.
I would think in theory if you had a vendor switch that support dot1q
trunking, and had the right amount of line power I couldn't see an
issue.(theoretically) oh yeah by the way, don't be alarmed if you only
get one ping response back (from the switch you are on or gateway
router) that is normal*
Q:In addition to all that here is another question for the group, I see
dot1q all the time, can you use ISL encapsulation /w IP phones?
Anthony Hoyle
P.s What kind of phone is it..7960?
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
George Kadeishvili
Sent: Friday, December 12, 2003 6:12 AM
To: ccielab@groupstudy.com
Subject: OT: cisco ip phones
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?
This archive was generated by hypermail 2.1.4 : Sat Jan 03 2004 - 08:25:39 GMT-3