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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...
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...
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...
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 ...
