Solved: Need some (basic) help please

jigsaw2026 · ‎10-18-2006

The IP office unit is in vlan 3 on a 3750 in office B. The 3750 is connected to another 3750 in office A, via a fibre loop. Three IP phones have been plugged into the 3750 in office A, and obviously need to connect to the IP office unit in office B. The phones do not have PCs connected to them and there are no QoS tools in place, so is there any reason why we can't put them in our regular office vlan (10)? We don't want to run a trunk over the WAN link, currently it is an access VLAN 2.

Many thanks,

J2026

Tommer Catlin · ‎10-18-2006

You can run the 3 phones on the data vlan or default 0 vlan. The only problem is that if had a pc at the end of that fiber, and the pc wants to pull 100megs across the pibe, and if the person is one the phone, you may see a drop in QOS, possibly dropped calls. As long as the phone can get to the TFTP server, download the config and talk to the CCM and voice gateway, you should be fine.

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Tommer Catlin · ‎10-18-2006

You can run the 3 phones on the data vlan or default 0 vlan. The only problem is that if had a pc at the end of that fiber, and the pc wants to pull 100megs across the pibe, and if the person is one the phone, you may see a drop in QOS, possibly dropped calls. As long as the phone can get to the TFTP server, download the config and talk to the CCM and voice gateway, you should be fine.

jigsaw2026 · ‎10-20-2006

Thanks a lot for your reply - this worked, although it hasn't been stress-tested yet so I guess we may well find we need some QoS tools.

Tommer Catlin · ‎10-20-2006

One the remote phone, start a phone conversionation with someone, anyone, anywhere.. then use a PC at the remote side. Drag a 3gig file or something large and if see if the MOS scores drop on the phone.

You can view the MOS scores live on the IP phone when on the phone by hitting the "?" twice. If your MOS drops to below 3.. you are in trouble.

cheers!