code: public void resetTimer(Long invokeId) throws TCAPException {
          try {
              this.dialogLock.lock();
              int index = getIndexFromInvokeId(invokeId);
              InvokeImpl invoke = operationsSent[index];
              if (invoke == null) {
                  throw new TCAPException("No operation with this ID");
              }
              invoke.startTimer();
          } finally {
              this.dialogLock.unlock();
          }
      }
docs: TC-TIMER-RESET