I am trying to setup an ACDAddressListener, but receive these exceptions. However, I do see some events even after these errors. Any ideas on how to stop them from happening or what I am doing wrong? It would also be cool to see somewhere that the error codes CSTA Error 41 and 12 are documented.

11:22:48,563 ERROR com.avaya.jtapi.tsapi.impl.core.TSDevice [main] ~ CSTA Error: 41
com.avaya.jtapi.tsapi.TsapiResourceUnavailableException: CSTA Error: 41
at com.avaya.jtapi.tsapi.tsapiInterface.TSErrorMap.throwCSTAException(TSErrorMap.java:95)
at com.avaya.jtapi.tsapi.tsapiInterface.TsapiSession.send(TsapiSession.java:557)
at com.avaya.jtapi.tsapi.tsapiInterface.TsapiSession.send(TsapiSession.java:466)
at com.avaya.jtapi.tsapi.tsapiInterface.Tsapi.queryDoNotDisturb(Tsapi.java:1284)
at com.avaya.jtapi.tsapi.impl.core.TSDevice.doAddressSnapshot(TSDevice.java:2825)
at com.avaya.jtapi.tsapi.impl.core.TSDevice.setMonitor(TSDevice.java:2691)
at com.avaya.jtapi.tsapi.impl.core.TSDevice.setMonitor(TSDevice.java:2565)
at com.avaya.jtapi.tsapi.impl.core.TSDevice.addAddressMonitor(TSDevice.java:446)
at com.avaya.jtapi.tsapi.impl.TsapiAddress.addAddressListener(TsapiAddress.java:1105)
at com.alpine.st.avaya.AvayaImpl.setupDebugListeners(AvayaImpl.java:255)
at com.alpine.st.avaya.AvayaImpl.start(AvayaImpl.java:62)
at com.alpine.st.impl.StServerImpl.start(StServerImpl.java:107)
at com.alpine.st.main.Main.main(Main.java:65)
11:22:48,907 ERROR com.avaya.jtapi.tsapi.impl.core.TSDevice [main] ~ CSTA Error: 12
com.avaya.jtapi.tsapi.TsapiPlatformException: CSTA Error: 12
at com.avaya.jtapi.tsapi.tsapiInterface.TSErrorMap.throwCSTAException(TSErrorMap.java:100)
at com.avaya.jtapi.tsapi.tsapiInterface.TsapiSession.send(TsapiSession.java:557)
at com.avaya.jtapi.tsapi.tsapiInterface.TsapiSession.send(TsapiSession.java:466)
at com.avaya.jtapi.tsapi.tsapiInterface.Tsapi.snapshotDevice(Tsapi.java:1467)
at com.avaya.jtapi.tsapi.impl.core.TSDevice.doCallSnapshot(TSDevice.java:2895)
at com.avaya.jtapi.tsapi.impl.core.TSDevice.setMonitor(TSDevice.java:2692)
at com.avaya.jtapi.tsapi.impl.core.TSDevice.setMonitor(TSDevice.java:2565)
at com.avaya.jtapi.tsapi.impl.core.TSDevice.addAddressMonitor(TSDevice.java:446)
at com.avaya.jtapi.tsapi.impl.TsapiAddress.addAddressListener(TsapiAddress.java:1105)
at com.alpine.st.avaya.AvayaImpl.setupDebugListeners(AvayaImpl.java:255)
at com.alpine.st.avaya.AvayaImpl.start(AvayaImpl.java:62)
at com.alpine.st.impl.StServerImpl.start(StServerImpl.java:107)
at com.alpine.st.main.Main.main(Main.java:65)

These are TSAPI errors, so you would want to look at the "TSAPI for Avaya Communication Manager Programmer‘s Reference" to find these errors. Error 12 means that an invalid CSTA device was used. What address are you trying to put a listener on and where is it provisioned in Communication Manager?

Also, in the programmer's reference mentioned before look at Monitor Calls Via Device Service as this will give you more information on how this works.