The lab uses either 3550 and/or 3560's so it is good to familiarize yourself with both lines.3750's are identical to a 3560 except the inclusion of Stackwise.Internetworkexpert did a comparison of the features in a 3560 and a 3550 here:http://www.int...
Port 5060 (SIP) is just used for call setup and not for audio. So you will get one way audio (they can hear you, you can't hear them) with this setup.Here is the Linksys guide http://www.linksys.com/servlet/Satellite?childpagename=US%2FLayout&packe...
The configuration is specific to the switching platform you are using.Cisco calls it SPAN (Switched Port ANalyzer) and here is link that should cover every switching and describing how to it it uphttp://www.cisco.com/en/US/products/hw/switches/ps708/...