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SECTION 5 1 8-4 1 1 - 1 00
IS DIAL TONE
PRESENT
SEE PROCEDURE
FOR NO DIAL
TONE
Page 40
BSP 518-41 1-100-i01 1978-08-40.jp
CHECK OPTION
YES
PLUGS ON 486A
KTU
NO
TROUBLE
CLEARED
REPLACE
486A KTU
TROUBL E
CLEARED
REPLACE
485A KTU
Fig. 1 4-No Audible Ringback
YES
NO
TROUBLE
CLEARED
PERFORf'l
DIAGNOSTICS
TEST NO. 2
YES
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