EXFO FTB-800 Series for FTB-1 - Manual (Page 471)

Test Functions
NetBlazer 461
Spare Bits
RX

E4

G.751 Bit 14, 15, 16 are reserved for national use.

E3

G.751 Bit 12 is reserved for national use.

E2

G.742 Bit 12 represents Bit 12 from Timeslot 1, 2, 3, and 4
respectively.

E1

S
i0
is located in the bit 1 of the frame containing the frame
alignment signal (FAS).

S
i1
is located in the bit 1 of the frame not containing the frame
alignment signal (FAS).

S
a4
to S
a8
are located in bit 4 to 8 of frame number 1, 3, 5, and 7 of
sub-multiframe 1 and 2. Possible values are either 0 and 1 or 0000
to 1111 depending on the framing.

TS16 Frame 0 Bit 5, 7, 8 are located in bit 5, 7, and 8 from Timeslot
16 of frame 0 of a E1 signal.