Merge "Add simple comment for maintenance"

                        }

                        break;

                    case ImsSmsImplBase.SEND_STATUS_ERROR_FALLBACK:

                        // Skip MAX_SEND_RETRIES checking here. It allows CSFB after

                        // SEND_STATUS_ERROR_RETRY up to MAX_SEND_RETRIES even.

                        tracker.mRetryCount += 1;

                        mTrackers.remove(token);

                        fallbackToPstn(tracker);