Dear all, I have a Cisco 3660 router with Serial4T card and need to config E1 on these ports. Please help with the config. Thank you very much.Duc VuP.S. Here is router's info:interface Serial3/0 no ip address shutdownSerial3/0 is administratively d...

Please help with the question if we could config port channel across different media type such as Gigabit and Ethernet 10/100 ports ? thanks in advance.

got a question for the experts: I have a router which is directly connecting to a switchport (3524s), need to config this port belonged to Vlan 100 and untagged. How do I config switchport "untagged" ? thanks for all help.

Can someone point me to a link for setting up voice vlan ? we're trying to use Cisco wireless phone 7920 and would like to know about setting up the voice vlan. Thank you very much.

I'm new in this technology; just got to install CCM 4.1.3 and Unity VM 4.0. CCM indicates that VM ports have registered but Unity logs show errors of "not registered"...where should I start to look into ? thanks for help.