Gestetner A193 Service Manual page 773

1. Activation Procedure from the TE
In idle "F3" status, the TE send the
INFO1 signal to the NT and changes
to "F4" status. The NT then changes to
"G2" status and sends INFO2 signal to
the TE.
The TE changes to "F5" status and
stops sending signals to synchronize it-
self to the signal from the NT.
After the TE has synchronized to the
signal, it sends INFO3 signal to the NT
and changes to the "F6" status.
The NT then changes to "G3" status
and sends INFO4 signal back to the
TE to inform that a physical link has
been established.
The timers T1, T2 and T3 are used to
reset the TE or NT if a correct re-
sponse has not received before the
timers expire.
2. Activation Procesure from the NT
The procedure starts from the NT by
sending INFO2 signal to the TE.
After the TE has synchronized to the
signal, it sends INFO3 signal to the NT
and changes to the "F6" status.
The NT then changes to "G3" status
and sends INFO4 signal back to the
TE to inform that a physical link has
been established.
The timers T1 and T2 are used to
reset the NT if a correct response has
not received before the timers expire.
APPENDIX A
D-Channel Layer 1 Dump List
How to Read the Dump List
TE
F 3
F 4
F 5
F 6
T 3
F 7
F 3
TE
F3
F6
F7
A-8
NT
G 1
G 2
T 1
G 3
G 4
T 2
G 1
G 1
H143X510.wmf
NT
G 1
G 2
T 1
G 3
G 4
T 2
G 1
G 1
H143X511.wmf
SM