User's Manual

Table Of Contents
Prepare to Leave the Site68P09255A61-4
Aug 2002
1X SC 4812T BTS Optimization/ATP Software Release 2.16.1.x
FIELD TRIAL
5-7
Table 5-5: Set BTS Span Parameter Configuration
Step Action
3 If required only, enter the following MMI command for each span line to set the BTS span parameters
to match that of the physical spans a - f run to the site:
span_config <option#1> <option#2> <option#3> <option#4> <option#5>
option#1 = the span to change (a - f)
option#2 = the span type (0 - 8):
0 - E1_1 (HDB3, CCS, CRC-4)
1 - E1_2 (HDB3, CCS)
2 - E1_3 (HDB3, CAS, CRC-4, TS16)
3 - E1_4 (HDB3, CAS, TS16)
4 - T1_1 (AMI, DS1 AT&T D4, without ZCS, 3 to 1 packing, Group 0 unusable)
5 - T1_2 (B8ZS, DS1 AT&T ESF, 4 to 1 packing, 64K link)
6 - J1_1 (B8ZS, J1 AT&T ESF, Japan CRC6, 4 to 1 packing)
7 - J1_2 (B8ZS, J1 AT&T ESF, US CRC6, 4 to 1 packing)
8 - T1_3 (AMI, DS1 AT&T D4, with ZCS, 3 to 1 packing, Group 0 unusable)
option#3 = the link speed (56 or 64) Kbps
option#4 = the span equalization (0 - 7):
0 - T1_6 (T1,J1:long haul)
1 - T1_4 (T1,J1:393-524 feet)
2 - T1_4 (T1,J1:131-262 feet)
3 - E1_75 (E1:75 Ohm)
4 - T1_4 (T1,J1:0-131 feet)
5 - T1_4 (T1,J1:524-655 feet)
6 - T1_4 (T1,J1:262-393 feet)
7 - E1_120 (E1:120 Ohm)
option#5 = the slot that has LAPD channel (0 - 31)
Example for setting span configuration to E1_2, 64 Kbps, E1_120-Ohm, LAPD channel 1:
span_config a 1 64 7 1
.
.
span_config f 1 64 7 1
Example for setting span configuration to T1_2, 64 Kbps, T1_4 (0-131 feet), LAPD channel 0:
span_config a 5 64 4 0
.
.
span_config f 5 64 4 0
NOTE
Make sure that spans a - f are set to the same span type and link speed. The equalization may be
different for each individual span.
After executing the span_config command, the affected MGLI2/GLI2 board MUST be reset and
re-loaded for changes to take effect.
Although defaults are shown, always consult site specific documentation for span type and rate used at
the site.
4 Press the RESET button on the GLI2 for changes to take effect.
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