User's Manual

Span Lines – Interface and Isolation

68P09258A31–A

Oct 2003

1X SCt 4812T BTS Optimization/ATP

3-16

T1/E1 Span Isolation

Table 3-4 describes the action required for span isolation.

Table 3-4: T1/E1 Span Isolation

Step Action

1 Have the OMC/CBSC place the BTS OOS.

2 The T1/E1 span 50–pin TELCO cable connected to the BTS

frame SPAN I/O board J1 connector can be removed from

both Span I/O boards, if equipped, to isolate the spans.

NOTE

If a third party is used for span connectivity, the third party

must be informed before disabling the span line.

Verify that you remove the SPAN cable, not the

“MODEM/TELCO” connector.