[Asterisk-Users] Mix Data and SIP Phones

[Jon Bebeau]

I've seen several posts on this subject.  The camps seem to fall into one of
three directions:

1)  Separate physical cables (i.e. CAT5) connections to segregate VoIP
phones from data traffic.
2)  Share a single wire to both the phone and PC AND use the VLAN capability
of the phone.
3)  Don't worry about it case the wire (and switch) is fast enough / low
enough volume to support it.

Option (1) would imply some extra switches or VLAN at the same switch with
Layer 3 QoS or entirely unique equipment "up stream" to keep the traffic
segregated. This option would certainly provide the best service to all
users but at substation costs - effectively duplicate networks.

Option (2) is what I'm doing with my Cisco phones, a Layer 2 switch and
traffic shaping in the Asterisk box.  I "force" bandwidth and QoS by
throttling the non-voice traffic.

Option (3), the no brainier can work well in small low-medium LANs.  Even
huge FTPs take a breather between packets.  This is what I use in my
development sandbox with Asterisk and the office staff.  Doesn't seem to be
a performance problem, but it's just a few folks.

Jon

----- Original Message ----- 
From: <yves at swissinfo.org>
To: <asterisk-users at lists.digium.com>
Sent: Monday, August 30, 2004 2:30 AM
Subject: [Asterisk-Users] Mix Data and SIP Phones


I?m looking to install a couple of SIP phones into a small/medium company.
The easiest way would be to simply add the phones on the LAN network. But
what would happened if someone make a huge file transfer: will it make
trouble
on the Sip connections ? I think so, that?s why I?m asking you if there
is a good (better) way? Maybe connect SIP phones on a separate network and
setup a linux box as router w/ traffic shaping ?

Thanks.

Yves Raber
yves at swissinfo.org

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