
STANDARD PRODUCT
PM8315 TEMUX
DATASHEET
PMC-1981125
ISSUE 7
HIGH DENSITY T1/E1 FRAMER WITH
INTEGRATED VT/TU MAPPER AND M13 MUX
PROPRIETARY AND CONFIDENTIAL
230
3
Unused
I
-
I
-
I
-
I
-
4
Unused
I
-
I
-
I
-
I
-
5
Unused
I
-
I
-
I
-
I
-
6
Unused
I
-
I
-
I
-
I
-
7
Unused
I
-
I
-
I
-
I
-
8
Unused
I
-
I
-
I
-
I
-
9
Unused
I
-
I
-
I
-
I
-
12.12 H-MVIP Data Format
The H-MVIP data and Channel Associated Signaling interfaces on the TEMUX
are able to carry all the DS0s for 28 T1s or all timeslots for 21 E1s. When
Carrying timeslots from E1s the H-MVIP frame is completely filled with 128
timeslots from four E1s but when carrying DS0s from four T1s there are not
enough DS0s to completely fill the 128 byte frame. Table 35 shows how the
DS0s and CAS bits of four T1s are formatted in the 128 timeslot H-MVIP frame.
Table 36 shows the timeslot and CAS bit H-MVIP format when in E1 mode and
not in G.747 mode. Table 37 shows the timeslot and CAS bit H-MVIP format
when in G.747 mode. The CAS bits are carried in bits 5,6,7 and 8 of each byte
on the CASID[1:7] and CASED[1:7] H-MVIP buses.
Table 35
- Data and CAS T1 H-MVIP Format
Timeslot
Number
First T1 DS0
Number
Second T1 DS0
Number
Third T1 DS0
Number
Fourth T1 DS0
Number
0-3
Undefined
Undefined
Undefined
Undefined
4-7
1
1
1
1
8-11
2
2
2
2
12-15
3
3
3
3
16-19
Undefined
Undefined
Undefined
Undefined
20-23
4
4
4
4
24-27
5
5
5
5
28-31
6
6
6
6
32-35
Undefined
Undefined
Undefined
Undefined