Avaya Phone in same VLAN as workstation

Ok so here is my dilema, Avaya Phone with Docking station plugged in to it, dot1q passes the workstation fine, but hangs the phone. With out creating a voice vlan is there any way I can have the phone authenticat with mab, and the workstation with dot1q? I know the best solution is a re-design of the vlans, but thought I would throw this out to the group.
Jeff

Hi all,
My problem is the oposite. I have a Siemens phone connected to a c2960. The phone will do MAC authentication.
Connected to the phone I have a PC which authenticates using dot1x.
The MAC authentication is successfull but the Siemens phone is placed on the DATA vlan instead of the VOICE vlan.
At this point, for testing purposes I tried eliminating the dot1x configuration of the port. My current interface config is:
interface GigabitEthernet0/13
switchport access vlan 124
switchport mode access
switchport voice vlan 310
authentication host-mode multi-domain
authentication order mab
authentication port-control auto
authentication periodic
authentication timer reauthenticate 300
mab
spanning-tree portfast
end
I'm using an ACS radius server which is returning the "device-traffic-class=voice" but still the  phone will always end up on the Data vlan.
If no auth is configured the phone ends up in the voice vlan as expected.
Any help here will be appreciated since all the config guides I've read untill now just present the above as the necessary config.
Best Regards,
Pedro

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    |__________________|
    |   | vlan 5         |         |
        |                  |
        |                  |
    Context A        |
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    add service lt-bw14-80
    add service lt-bw16-80
    add service lt-bw18-80
    add service lt-bw20-80
    add service lt-bw22-80
    add service lt-bw24-80
    add service lt-bw26-80
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