Specifications

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Cisco ATM Services (AXSM) Configuration Guide and Command Reference for MGX Switches
Release 5.2, Part Number OL-6484-01 Rev. C0, September 2005
Chapter 5 AXSM Command Reference
cnfbert
cnfbert
Configure Bit Error Rate Test—AXSM-E, AXSM-XG, AXSM-32-T1E1-E
Configures the BERT test pattern for the given bay.line. BERT is the acronym for bit error rate test.
The new configuration will not take effect if the given BERT test pattern is already running on the given
bay.line. However, it will take effect if the test is stopped and started again.
The BERT test patterns range from 1–32 and are described in Table 5-15.
Table 5-15 BERT Test Patterns
No. Test Pattern Description
1 allZeros all zeroes (..0000..)
2 allOnes all ones (..1111..)
3 altOneZero alternate ones and zeros (..1010..)
4 doubleAltOnesZeros double alternate ones and zeros (..1100..)
5 oneIn4 a four bit pattern containing a single 1
6 oneIn8 an eight bit pattern containing a single 1
7 oneIn16 a sixteen bit pattern containing n ones where n equals 1–16
8 threeIn24 a 24 bit pattern which contains 3 ones
9 inbandLoopup D4/SF Loopback activate
10 inbandLoopdown D4/SF Loopback deactivate
11 twoE3MinusOne 23 – 1 (7 bits)
12 twoE4MinusOne 24 – 1 (15 bits)
13 twoE5MinusOne 25 – 1 (31 bits)
14 twoE6MinusOne 26 – 1 (63 bits)
15 twoE7MinusOne 27 – 1 (127 bits)
16 twoE7MinusOneFT1Loopup 27 – 1 (fractional T1 loop back activate)
18 twoE9MinusOne 29 – 1 (511 bits with a maximum of 8 non-inverted sequential
zeros and 9 sequential ones)
19 twoE10MinusOne the 210 – 1 (1023 bits)
20 twoE11MinusOne 211 – 1 (2047 bits with a maximum of 15 inverted sequential
zeros)
21 twoE15MinusOne 215 – 1 (32767 bits with a maximum of 15 inverted sequential
zeros)
22 twoE17MinusOne 217 – 1 (131071 bits)
23 twoE18MinusOne 218 – 1 (262144 bits)
24 twoE20MinusOne 220 – 1 (1048575 bits with a maximum of 19 non-inverted
sequential zeros)
25 twoE20MinusOneQRSS 220 – 1 (1048575 bits with zero suppression: a quasi-random
signal source)
26 twoE21MinusOne 221 – 1 (2097151 bits)
27 twoE22MinusOne 222 – 1 (4194303 bits)