Media Server unable to parse DTMF NTFY response

[gkadnar]

Parsing of OperationComplete event : O:AU/oc(AU/pc rc=100 na=1 dc=6)

fails with following exception:

2018-09-19 13:26:38,132 ERROR [org.restcomm.media.client.mgcp.stack.JainMgcpStackProviderImpl] (Thread-130) Unexpected exception occured:: java.lang.ArrayIndexOutOfBoundsException: 1
at org.restcomm.javax.media.mscontrol.mediagroup.signals.Options.(Options.java:82)
at org.restcomm.javax.media.mscontrol.mediagroup.signals.SignalDetectorImpl.fireEvent(SignalDetectorImpl.java:386)
at org.restcomm.javax.media.mscontrol.mediagroup.signals.SignalDetectorImpl.processNotify(SignalDetectorImpl.java:377)
at org.restcomm.javax.media.mscontrol.mediagroup.signals.SignalDetectorImpl.processMgcpCommandEvent(SignalDetectorImpl.java:354)
at org.restcomm.javax.media.mscontrol.spi.DriverImpl.processMgcpCommandEvent(DriverImpl.java:259)
at org.restcomm.media.client.mgcp.stack.JainMgcpStackProviderImpl$DispatcherThread.run(JainMgcpStackProviderImpl.java:356)

Test case attached
SignalDetectorImplTest.zip