XRT84L38IB Exar Corporation, XRT84L38IB Datasheet - Page 194

• Manufacturer Part Number: XRT84L38IB
• Description: Network Controller & Processor ICs 8 Ch T1/E1 Framer
• Manufacturer: Exar Corporation

Specifications of XRT84L38IB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XRT84L38
OCTAL T1/E1/J1 FRAMER
N
Common Channel Signaling is an alternative form of signaling from Channel Associated Signaling. In CCS,
whatever signaling data which is transported via the outbound E1 data stream, carries information that applies
to all of the voice channels as a set (e.g., timeslots 1 through 15 and 17 through 31) in the E1 frame. There are
numerous other variations of Common Channel Signaling that are available. Some of these are listed below.
•
•
•
A more detailed discussion of these forms of Common Channel signaling are discussed in Section 10.0.
F
2.2.2.2
OTE
IGURE
31 Voice Channels with the common channel signaling being transported via the National Bits.
30 Voice Channels with the common channel signaling data being transported via the National Bits and CAS
data being transported via timeslot 16.
30 Voice Channels with the Common Channel Signaling being processed via timeslot 16. (e.g., Primary Rate
ISDN Signaling).
8 Bits/
Time Slot
32 Time Slots/Frame
: The Local Transmit E1 Framer will continue to set the y-bit to "1" for the duration that the Local Receive E1 Framer
16 Frames/
Multiframe
detects this problem.
19. E1 F
a. Even Frames 0, 2, 4-14
b. Odd Frames 1, 3, 5-15
1
1
Common Channel Signaling (CCS)
RAME
0
1
FR
0
A
0
TS
Time Slot 0
0
FR
F
1
N
ORMAT
1
FAS
TS
N
1
1
FR
2
N
0
TS
2
FR
3
N
1
N
1
FR
4
3 - 14
TS
FR
5
a. Frame 0
b. Frames 1-15
A
0
B
0
FR
MAS
6
TS
174
15
C
0
Time Slot 16
FR
7
D
0
TS
16
A
X
FR
8
TS
17
Y
B
FR
9
C
X
D
X
FR
10
18 - 28
TS
FR
11
1
2
FR
12
Time Slots 1-15, 17-31
TS
29
3
Channel Data
FR
13
TS
30
4
5
FR
14
TS
31
6
FR
15
REV. 1.0.1
7
8