GS752TPS:Auto VLAN VOIP not working

[domg1]

I’m trying to add an Alcatel phone IP on Netgear GS752TPS (firmware 5.3.0.36) switch. When I connect phone to the switch, the port goes to VLAN 4088 Untagged instead of  Tagged.

I did a factory reset and configure from scratch without luck.

Weird thing is if I disable then enable Voice VLAN Mode, port goes to VLAN 4088 tagged ! If I reboot the port goes to VLAN 4088 Untagged.

Why ports are not going to VLAN4088 Tagged  auto ?

Thanks for your support

Extract of my configuration, phone is connected to 1/g11 port, 1/g51 port is connected to another switch with ip phone server

[DaneA]

@domg1,

Welcome to the community! 🙂 

Found out that you have already an ongoing support ticket with the NETGEAR Support Team. You may want to share the progress of your support ticket here. 

Regards,

DaneA

NETGEAR Community Team

[domg1]

Hello,

Indeed after diagnostic with the support, we disabled auto-VOIP and tagged needed ports to the VLAN VOIP.

Regards