[Serusers] SER Newbie Questions

Greetings All, I am new to the list so please forgive the newbie level questions, ok. Currently, we have 3 Asterisks PBX's locate throughout the world with our main webserver in the US and if I understand what SER can do for me then this might be the product that I need. We need something that will allow all of our users to have the same connection domains like (ie.. sip.examples.com) for example and which they can connect to SER which will re-route their connection to the closest PBX to handle their call at which point the PBX would take over the user connection and handle the call. Is this about correct as to what SER can do for us? If this is true, then is there some Turorials and HOWTO example documentation that I might read to see about getting SER set up on one of our contol servers? -- Thanks, Lonnie Cumberland OutStep Technologies Incorporated CELL: 313-333-2935 FAX: 619-639-2888