We have a trunk link between two switches One Cisco 2960 and the other TPLINK.

 

The voip phone gains ip address with DHCP Server on the ISP side with Cisco gear.

 

But not with TPLINK Switch.

 

We have routing because I can see the mac address table with voice vlan passing trough the TPLINK but its not enough.

 

Cisco side:

 

switchport mode trunk

 switchport mode trunk
 switchport nonegotiate
 spanning-tree bpdufilter disable
 spanning-tree bpduguard disable
 spanning-tree guard none

 

TP Link side:

 

vlan 121

name "VoiceVLAN"

!

voice vlan 121

!

interface x        --->Trunk link

switchport general allowed vlan x, 121 tagged

!

 

interface x --->voip phone

voice vlan

!

 

the equipment don't get registered.

 

The VOIP model its a SNOM D765.

 

Could you please be so kind to help us with something?

 

Best Regards,

 

pinhom