Chapter 7. Module Terminal Menus61200305L1-1 ATLAS 550 User Manual 7-7T EST Initiates different types of tests and displays test results.P RTIdentifies the port number.L OC LBWrite security: 4; Read security: 5Causes loopback on near-end port. (Local Loopback)R EMOTE LBWrite security: 4; Read security: 5Sends a loopback code to a remote CSU.P ATTERNWrite security: 4; Read security: 5Specifies the test pattern to be transmitted out the port.QRSS/RLB R ESULTSRead security: 5(Remote Test Pattern Results) Suppresses excess zeros—indication of syncand errors of received data pattern.C LRWrite security: 3; Read security: 5(Test Pattern Results Clear) Clears current error counters on test patternresults menu.INJWrite security: 3; Read security: 5(Test Pattern Error Inject) Injects errors into transmitted test pattern.These TEST commands temporarily disrupt service.L INE Metallic loopback.PAYLD Payload loopback framing and clocking are regenerated.ANSI FDL LINE Sends ANSI line loopback code. Requires ESF mode.ANSI FDL P YLD Sends ANSI payload loopback code. Requires ESFmode.ATT INBAND L INE Sends line loopback using inband code.A LL ONES Framed onesA LL ZEROS Framed zerosQRSS Pseudorandom pattern with suppression of excess zeros
