APS Test Procedure:
The TX300/e should be connected to a transmission system to ensure that the switching time is measured for the service
transported by the E1 links
Ensure that no errors or alarms are present on the transmission system because this will impact the measurement
The measurement will be triggered by an Alarm Indication Signal (AIS)
The TX300/e measures how long the AIS event remains present after the event is first recognized and will continue to
measure the total disruption time in the event of multiple disruptions
E1 APS
11.4 E1 Frame Words
This function requires the E1 signal to be framed. The NFAS word is used to carry information about the status of the link and to
provide control signals for primary rate multiplexers.
Bit 1: Reserved for International use (M is used to transmit the CRC multiframe signal in PCM30C and PCM31C)
Bit 2: Set to “1” to prevent simulation of FAS
Bit 3: "A" shows the remote alarm indication
Bits 4 to 8: Sa4 to Sa8 are spare bits
TX:
Bits Sa4 to Sa8 are used to send optional network messages. The Sa bits should be set to “1” when they are not used or
when links cross International borders.
RX:
Bit Sa4 can be used as a message based data link for operations, maintenance and performance monitoring.
E1 Framed RX
TX300S_e-manual_D07-00-064P_RevA00
Summary of Contents for VePAL TX300M
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Page 12: ...23 0 About VeEX Go back to top TX300S_e manual_D07 00 064P_RevA00...
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Page 61: ...Tx Structure Setup Graphical Mode Tx Payload Setup TX300S_e manual_D07 00 064P_RevA00...
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Page 220: ...Pattern Setup Results Errors Alarms TX300S_e manual_D07 00 064P_RevA00...
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Page 261: ...Go back to top Go back to TOC Errors Alarms Page 2 TX300S_e manual_D07 00 064P_RevA00...
Page 369: ...OAM LMM Parameters OAM Service DMM OAM DMM Message TX300S_e manual_D07 00 064P_RevA00...
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