[Asterisk-Users] ADSI phone vs. IP phone

[Chris Albertson]

One other option, although I hate to suggest it but will admit to
having done it a few times...

Ethernet uses only two twisted pair.  Cat-5 wire has four pair
inside.  You can crimp two RJ45 terminals on one lenght of CAT5
wire.  It works and remains CAT5 if you keep the pairs twisted
all the way into the terminals.  OK, yes it's "unclean" and ugly
but the uglyness is inside the wall in back of a cover plate
and the user sees two RJ45s where there was one before.

That said, last time I got to wire a new office we pulled double
the number of Cat5 as required but only terminated it as required.
in either rj45 or 11.

You might concider using wireless for the phones.  Ether a wireless
LAN or just wireless analog phones.  Ether way no wires.  As I
remember the average cost to pull a wire ad terminate both ends
is about $100.  cheaper than a wirelass adaptor.



--- daryl at introspect.net wrote:
> > -----Original Message-----
> > From: asterisk-users-admin at lists.digium.com 
> > [mailto:asterisk-users-admin at lists.digium.com] On Behalf Of 
> > Dustin Goodwin
> > Sent: Monday, January 19, 2004 11:18 AM
> > To: asterisk-users at lists.digium.com
> > Subject: Re: [Asterisk-Users] ADSI phone vs. IP phone
> > 
> > 
> > Why wouldn't you just use your existing Ethernet 
> > infrastructure putting 
> > the  IP phones inline between the wall jack and the PC? There are a
> 
> > number of IP phones that have builtin switch/hub that allows 
> > the PC to 
> > daisy chain off the IP phone.
> 
> Probably because it's well known that these setups are prone to
> failure
> of either the PC's connection, the phone's connection, or degredation
> of
> one/both.  It also breaks switch envirenments where spanning-tree
> portfast is enabled (not as big of a deal if the deployment is in
> concert with the infrastructure group, as it should be).

=====
Chris Albertson
  Home:   310-376-1029  chrisalbertson90278 at yahoo.com
  Cell:   310-990-7550
  Office: 310-336-5189  Christopher.J.Albertson at aero.org
  KG6OMK

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