About sachin.s

sachin.s · 03-08-2006

I am trying to upgrade my 7940 IP phone to SIP ver 7.5. But the problem is that the moment I plug the phone into a switch, it starts with its own stuff (Configuring VLAN, IP, Requesting configuration, etc). It does not allow me to make any changes to...

sachin.s · 03-10-2006

Hi Rob,First of all thanks for the solution. But unfortunately the solution still doesnt work for my problem. As per the instruction I followed all the steps, but still same error. One more thing, we do not have any call manager, instead we use SIP f...

sachin.s · 03-08-2006

Dear Dvanzee,As you rightly said, I have tried the above solutions. I have cisco 3550 switch and the port to which the IP Phone is connected is assigned to voice vlan. I have created VLAN 10 as voice vlan and issued the below commands on the switch;s...

sachin.s · 03-08-2006

Dear Mohamedtag,As you rightly said, I have tried both the above solutions. I have cisco 3550 switch and the port to which the IP Phone is connected is assigned to voice vlan. I have created VLAN 10 as voice vlan and issued the below commands on the ...

Member Since	‎07-10-2002 01:04 AM
Date Last Visited	‎08-18-2017 03:51 AM
Posts	4

User Statistics

User Activity

Cisco 7940 IP Phone Problem - Protocol Application Invalid

Re: Cisco 7940 IP Phone Problem - Protocol Application Invalid

Re: Cisco 7940 IP Phone Problem - Protocol Application Invalid

Re: Cisco 7940 IP Phone Problem - Protocol Application Invalid