codec RC

Standard Q.931 Disconnect Cause CodesThe following lists all the standard Q.931 (ISDN) cause codes as per the ITU specification. Many othervendors have implemented a larger number of cause codes, but they do not map to the specification andQuintum does not support them.The cause codes list can be used to decode the disconnect reasons in ISDN messages (PBX or PSTNinterfaces), Q.931 messages used to communicate over IP, Tenor CDR records and Tenor/Radiusmessages.
DecimalValueHexadecimalValue Definition;
RC 16 : Normal Call Clearing.This is one of the most common cause codes and is received for many reasons. It usually occursbecause someone hung up the call at one side or the other.
RC 19 : No Answer from User (User Alerted).The called party has been alerted to the incoming call, but does not respond with a connect indicationwithin a prescribed period of time.NOTE: This cause is not necessarily generated by Q.931 procedures but may be generated by internalnetwork timers.
RC 26 : Non-Selected User Clearing.Indicates that the user has not been awarded the incoming call.
RC 31 : Normal, Unspecified.This is a very common cause code and happens when the network is not able to determine what to dowith the call being made.
RC 34 : No Circuit/Channel Available.There are no B-Channels available to handle the selected call.
RC 41 :Temporary Failure.The call was disconnected due to a network failure.The network is not functioning correctly and that the condition is not likely to last a long period of time;e.g. the user may wish to try another call attempt almost immediately.
RC 102 :Recovery on Timer Expired.This occurs when ISDN messages don’t arrive in specified time according to the Q.931 specification.This cause is sometimes followed by the timer that has expired.
How to overcome him wrong would understood correctly .