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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
213
Table 19
- Structure for Carrying Multiplexed Links
SBI Column
1
6
7
8
15
16
17
18
19
268
269
270
Row 1
-
- C1 -
- SPE1SPE2SPE3SPE1
SPE1SPE2SPE3
2
-
-
-
-
- SPE1SPE2SPE3SPE1
SPE1SPE2SPE3
9
-
-
-
-
- SPE1SPE2SPE3SPE1
SPE1SPE2SPE3
1
2
3
3
5
6
6
6
7
90
90
90
SPE Column
The TEMUX when enabled for SBI interconnection will add and drop either 28
T1s, 21 E1s or a DS3 into one of the three Synchronous Payload Envelopes,
SPE1, SPE2 or SPE3. When T1 or E1 tributaries are sourced from the telecom
bus via VT1.5, TU11, VT2 or TU12 mappings, the TEMUX also supports a mix of
transparent virtual tributaries with T1s and E1s. Restriction to this are that only
VT1.5s, TU11s and T1s can be mixed together or VT2s, TU12s and E1s can be
mixed together. Another restriction is that the telecom bus and SBI bus must run
from the same clock with a fixed framing offset, ie. SREFCLK and LREFCLK are
externally connected.
Tributary Numbering
Tributary numbering for T1 and E1 uses the SPE number, followed by the
Tributary number within that SPE and are numbered sequentially. Table 20 and
Table 21 show the T1 and E1 column numbering and relates the tributary
number to the SPE column numbers and overall SBI column structure.
Numbering for DS3 follows the same naming convention even though there is
only one DS3 per SPE. TVT1.5s and TVT2s follow the same numbering
conventions as T1 and E1 tributaries respectively. SBI columns 16-18 are
unused for T1, E1, TVT1.5 and TVT2 tributaries.
Table 20
- T1/TVT1.5 Tributary Column Numbering
T1#
SPE1 Column
SPE2 Column
SPE3 Column
SBI Column
1,1
2,1
3,1
1,2
2,2
7,35,63
19,103,187
20,104,188
21,105,189
22,106,190
23,107,191
7,35,63
7,35,63
8,36,64
8,36,64