[Asterisk-Users] Re: Grandstream and VLANs

[Bartosz Jozwiak]

>> Just a couple of guesses:
>>
>> Have you configured the switch to supply a VLAN trunk to the phone?
> Yes
>
>> Since the phone lets you configure actual tagging, that's what it
>> needs; if you've just enabled VLANs on the switch, and placed the port
>> the phone is on in a specific VLAN, the phone should not have tagging
>> enabled.
> Exactly, both phone and the switch are configured to use tagging and to 
> use the same VLAN #
>
>>
>> If you've got the switch doing trunk mode on that port, and the phone
>> set up to use the right VLAN within the trunk, are you perhaps using a
>> Cisco switch, and have accidentally set it up to use ISL encapsulation
>> (Cisco's proprietary method) on the trunk?  The phone does 802.1Q, so
>> Cisco switches need "switchport trunk encapsulation dot1q" on the
>> trunking interface.
> No, I am using the HP Pro Curve, Haven't tried Cisco yes but I woul assume 
> that my switches are operating just fine
>
> Thanks,
> Wojtek
>

I have the same problem with VLAN and Grandstream BG phone.
I am using HP switches.
There is a bug in the firmware of the phone, Grandstream tech. knows about 
it already.

B.