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ATA does not pick Voice VLAN by default

erik.stillman
Beginner
Beginner

Hi,

We have a trunk port configuration with both an access vlan and a voice vlan. Unlike the IP phones, we can't seem to get our ATAs to grab an IP from the Voice VLAN.

Any ideas or must they be manually configured?

Thanks!

Erik.

10 Replies 10

c-charlebois
Participant
Participant

I do not beleive that it is possible to configure they to recognize the trunking. In our environment, we turn off trunking on ports that support ATA's and assign the entire port to the voice VLAN. Then we just label those ports with a sticker dot.

Now this is true of ATA186's. ATA188's, with their ethernet port, may be different.

Can you provide an example of how to that on the switchport?

Thanks,

Erik

mmihalas
Beginner
Beginner

They probably need to be upgraded. I bet they shipped with 2.15, and you need to go to 2.16 or newer for the voice vlan to work. Put the latest software on the CallManager TFTP, assign a port to just the voice VLAN, plug them in and let them upgrade, and then you should be able to plug them in anywhere. Just be sure not to disconnect them or let them lose power while they are being upgraded.

Mike

Can you provide an example of how to that on the switchport?

Thanks,

Erik

If you have a 3550 switch, to assign the switch port to only voice vlan (vlan61), use these commands:

int fa0/10

switchport access vlan 61

switchport mode access

spanning-tree portfast

To assign both a access (60) and voice (61) vlan on the switch port, add these commands:

int fa0/10

switchport access vlan 60

switchport mode access

switchport voice vlan 61

spanning-tree portfast

ATA does understand 802.1p priority and thereby get the voice vlan id from the switch.