[asterisk-users] polycom ip330/ip501 second ethernet port

[David Gomillion]

On 10/19/07, Kevin Smith <kevin.smith at mercury.net> wrote:
>
>
> Robert McNaught wrote:
> > Hi,
> >
> > Has anyone had any great difficulties with QoS using the second
> > ethernet phone in these Polycom phones for desktop machines in a
> > converged network?  I had heard that these can cause difficulties when
> > used in this manner.  I have always tried to persuade customers to go
> > with 2 ethernet drops per workstation to avoid having to use the phone
> > as a switch.
> >
> > I apologize for this question not being directly related to asterisk,
> > but since Polycom phones are used a lot with asterisk, it seems a good
> > place to post ;-)
> >
> > Robert McNaught

>
>Hi Robert,
>
>While I'm not sure how our network compares with yours, we run about
>twenty 601 phones along with our office workstations (some stations are
>without a phone). Each station with a phone is connected with the other
>Ethernet port on the phone so we have one drop to each station. The
>phones are on a separate VLAN from the rest of the network as well.
>From the user end, I have not had a report of any problems with the
>connections, call quality, etc. I would say give it a shot, maybe with a
>larger network that could change, but for a small office like I'm in
>charge of, it is working just fine.
>
>Kevin

We have a medium-sized network (120 polycoms of various persuasions, and 80
workstations), and we haven't had any real problems with phones ruining QoS.
We have the phones on separate VLANs than the workstations. Actually, every
switch has 4 VLANs defined: 2 voice, 2 data, so no VLAN has more than about
12 devices (about because sometimes we have to put a pocket switch in a room
where the people want to add yet another computer).

The echo from SIP to SIP with people using cheap headsets has affected us
far more than any problems with PCs trying to suck the bandwidth. If I
remember correctly, recent firmwares on the Polycom phones pretty much do
the right thing, giving priority to the phone traffic.

To summarize: works OK for us.
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