problem in SoftwareSerial (error messages)

Hi I did, it still returned compiling error message.

The comment on the error is pasted below.
All I want is a working sketch that can call and send text message to my GSM phone. I only included the first section that is meant to place the call.

Thank you.

Error Message:

GSM\GSM3SoftSerial.cpp.o: In function __vector_5': C:\Program Files (x86)\Arduino\libraries\GSM/GSM3SoftSerial.cpp:525: multiple definition of __vector_5'
SoftwareSerial\SoftwareSerial.cpp.o:C:\Program Files (x86)\Arduino\libraries\SoftwareSerial/SoftwareSerial.cpp:319: first defined here
GSM\GSM3SoftSerial.cpp.o: In function __vector_4': C:\Program Files (x86)\Arduino\libraries\GSM/GSM3SoftSerial.cpp:518: multiple definition of __vector_4'
SoftwareSerial\SoftwareSerial.cpp.o:C:\Program Files (x86)\Arduino\libraries\SoftwareSerial/SoftwareSerial.cpp:312: first defined here
GSM\GSM3SoftSerial.cpp.o: In function __vector_3': C:\Program Files (x86)\Arduino\libraries\GSM/GSM3SoftSerial.cpp:511: multiple definition of __vector_3'
SoftwareSerial\SoftwareSerial.cpp.o:C:\Program Files (x86)\Arduino\libraries\SoftwareSerial/SoftwareSerial.cpp:305: first defined here