@vipinkalra2000: If you haven't already, have a look at the CallerInfo Server example in the IP Phone Services SDK.. it monitors all phones and sends push messages to a phone when it goes off-hook to connect an incoming call. That should give you an idea on how to map events to the particular phones.
I'm not sure about associating lines to phones in JTAPI though.. I had a quick look at the JTAPI JavaDoc, and Cisco's extensions but I did not find anything. However, you can use the existing methods in the SDK to get all the phone names, then for each phones get the lines that are associated to it. I have a small prototype for an app that can be used to set any phone's forwarding properties, which does about the same thing. Here's a code snippet:
getter.axlQuery("listPhoneByName", "%");
getter.axlQuery("getPhone", "SEP000F3442E7D1");
getter.axlQuery("getLine","{5DC75FE0-C490-41E0-B154-571CAA6C8373}");//7960
getter.axlQuery("getLine","{101ABB19-18CF-42B5-A602-975271A60BD9}");
String query = "{101ABB19-18CF-42B5-A602-975271A60BD9}";
query += "";
getter.axlQuery("updateLine",query);
getter is basically a class derived from AXLProvder in the SDK. My first line enumerates all the phones, I parse those XML objects, and read out the GUIDs of the lines associated to it, then I get each line object to check if it already has a forward set (that part of the code isn't listed), and finally I call the AXL updateLine method to set a forward.
Except for the updateLine method, everything is read only and there are no performance issues there (writing on the other hand is another issue.. there's a limit to how many write operations you can make per minute but I don't recall the exact value).
I hope that helps
