tfra08c13 ETC-unknow, tfra08c13 Datasheet - Page 37

• Manufacturer Part Number: tfra08c13
• Description: Tfra08c13 Octal T1/e1 Framer
• Manufacturer: ETC-unknow

Preliminary Data Sheet
October 2000
Lucent Technologies Inc.
Lucent Technologies Inc.
Frame Formats
Digital Data Service (DDS) Frame Format
The superframe format for DDS is the same as that given for D4. DDS is intended to be used for data-only traffic,
and as such, the system should ensure that the framer is in the nonsignaling mode. DDS uses time slot 24 (FAS
channel) to transmit the remote frame alarm and data link bits. The format for time slot 24 is shown in Table 9. The
facility data link timing is shown in Figure 9 below.
Table 9. DDS Channel-24 Format
SLC -96 Frame Format
SLC -96 superframe format consists of 12 DS1 frames similar to D4. The F
F
Time Slot 24 = 10111YD0
Y = (bit 6)
D = (bit 7)
S
RFDLCK
TFDLCK
pattern uses that same structure as D4 but also incorporates a 24-bit data link word as shown below.
RFDL
TFDL
Figure 9. T7633 Facility Data Link Access Timing of the Transmit and Receive Framer Sections
Remote frame alarm: 1 = no alarm state; 0 = alarm state
Data link bits (8 kbits/s)
Fs =
(continued)
FRAME
N – 1
. . .
000111000111D
FRAME
SLC -96 36-FRAME D-bit SUPERFRAME INTERVAL
N
t11
FRAME
N + 1
t8
Figure 10. SLC- 96 Frame Format
t10
1
DDDDDDDDDDDDDDDDDDDDDDD
SSLC -96 24-bit DATA LINK WORD
t9
FRAME
N + 2
(72 DS1 FRAMES)
FRAME
N + 3
t9
FRAME
N + 4
FRAME
N + 5
TFRA08C13 OCTAL T1/E1 Framer
24
T
000111000111DDD . . .
pattern is exactly the same as D4. The
FRAME
N + 6
t8: TFDLCK CYCLE =
t9: TFDL TO TFDLCK SETUP/HOLD = 40 ns
t10: RFDLCK CYCLE =
t11: RFDLCK TO RFDL DELAY = 40 ns
FRAME
N + 7
FRAME
N + 8
125 s (DDS)
250 s (ALL OTHER
MODES)
125 s (DDS)
250 s (ALL OTHER
MODES)
5-3910(F).cr.1
5-6421(F)r.1
37
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