From: David L Stewart (D.Stewart@mail.UTexas.edu)
Date: Mon Sep 16 2002 - 09:00:36 GMT-3
IP phones have a passive filter for auto detect. It lets one
frequency through and blocks the other. I would suspect that
something may be interfering with this process. Make sure the
AC power is clean or change the circuit it is on. There could
be a ground lop between the chassis and the in-line power supply.
Also, make sure your cable is a full 4-pair cable. Some Cisco
gear power the phones on the ethernet pairs and some use the
spare pairs. Weird but true.
Dave
-
At 02:49 AM 9/16/2002, Simon Bonham wrote:
>Chuck,
>
>Sorry about being nasty, am just very frustrated about this problem. This is
>my show env all:
>
>Total Inline Power Available: 1632.00 Watts (32.00 Amps @51V)
>Total Inline Power Drawn From the System: 0 Watt
>Remaining Inline Power in the System: 1632.00 Watts (32.00 Amps @51V)
>Default Inline Power allocation per port: 12.500 Watts (0.24 Amps @51V)
>
> Module Inline Power Allocated(mA)
> ------ --------------------------
> 1 0
> 2 0
> 3 0
> 4 0
>
>Power Budget is : 2 supplies
>Power Available to the System: 750 Watts (62.06 Amps @12V)
>Power Drawn from the System: 315 Watts (26.03 Amps @12V)
>Remaining Power: 435 Watts (36.03 Amps @12V)
>
>The phones seem to try to startup, as I can hear a bit of popping on the
>speaker. The relay clicks back and forth trying to engage the power, but
>never quite makes it.
>
>Regards,
>
>
>Simon.
>
>
>
>
>
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>Chuck Church
>Sent: 16 September 2002 00:02
>To: 'Simon Bonham'; 'ccielab@groupstudy.com'
>Subject: RE: OT: Cat 4006 with 48port F/E Inline Power unable to powerup
>7 9x0 IP Phones :((((
>
>
>Simon,
>
> You're bound to get more help from people if you're polite. Anyway,
>do a 'sh env power', see if there's any power available:
>
>Total Inline Power Available: 0 Watt
>Total Inline Power Drawn From the System: 0 Watt
>Remaining Inline Power in the System: 0 Watt
>Default Inline Power allocation per port: 6.00 Watts (0.11 Amps @51V)
>
> Module Inline Power Allocated(mA)
> ------ --------------------------
> 1 0
> 2 0
> 3 0
>
>How much power do the phones draw?
>
>Chuck Church
>CCIE #8776, MCNE, MCSE
>Sr. Network Engineer
>Magnacom Technologies
>140 N. Rt. 303
>Valley Cottage, NY 10989
>845-267-4000
>
>
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>Simon Bonham
>Sent: Sunday, September 15, 2002 1:06 PM
>To: ccielab@groupstudy.com
>Subject: RE: OT: Cat 4006 with 48port F/E Inline Power unable to powerup
>79x0 IP Phones :((((
>
>
>I was expecting a dumb answer like that.... If you read my mail properly,
>you will notice that I have the external DC power shelf.
>
>-----Original Message-----
>From: Mingzhou Nie [mailto:mnie@yahoo.com]
>Sent: 15 September 2002 17:56
>To: Simon Bonham; ccielab@groupstudy.com
>Subject: Re: OT: Cat 4006 with 48port F/E Inline Power unable to powerup
>79x0 IP Phones :((((
>
>
>Simon,
>
>Just having the inline power module doesn't mean it has the inline
>power. To enable in-line power on the 4006, you must have the Catalyst
>4000 Auxiliary DC Power Shelf and at least two power supplies
>
>http://www.cisco.com/warp/public/788/AVVID/ip_pwr_detect.html#first-cat4k
>
>Ming
>
>--- Simon Bonham <simon.bonham@london.sns.slb.com> wrote:
> > Hi there,
> >
> > I am in a desperate situation at the moment. Currently busy with a
> > project
> > where we are installing 4 x Cat 4006 with 48 port FastEthernet Inline
> > Power
> > (WS-X4148-RJ45V) modules and a Supervisor II. The problem is that
> > when we
> > plug in the IP phones, they don't want to power up. I managed to get
> > one to
> > power up on for about two minutes before it died again. I can hear
> > the
> > relays clicking in the 48 port blade trying to apply power to the
> > phone, but
> > they just don't power up. I have swapped ever conceivable piece of
> > hardware
> > between the Cat 4006's. They all have the same symptoms. I have tried
> > about
> > 7 different 7940/7910 IP phones and none of them power up. I have
> > checked
> > and checked the configuration. Its straight forward, and the Inline
> > power is
> > enabled by default. I have tried three version of CATOS and that
> > doesn't
> > make any difference. I have checked the external DC power shelfs and
> > swapped
> > them between the Cat's. I have swapped the Supervisors, inline power
> > blades
> > and PEM modules to no avail :( I have pretty much run out of idea's.
> >
> > Can anyone help me?
> >
> >
> > Regards,
> >
> >
> > Simon.
> >
> > Simon Bonham - Senior Consultant
> > Schlumberger Network Infrastructure and Solutions
> > Email: simon.bonham@london.sns.slb.com - http://www.slb.com/nws
>
>
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