Reference Guide
IMACS System Release 5.1.9
2-7
Applications
Data Modules and Applications
Figure 2-3. IAD using T1/E1 Conversion
Depending on the application, the signaling conversion can be set by the user to ITU-to-ANSI;
ANSI-to-ITU or None. Similarly, the companding can be set by the user to A-Law-to-
µ
-Law;
µ
-LAW-to-A-Law or None. As shown in the figure above, each WAN card must be configured
with one port for DSX1 and one for CEPT. A cross connection circuit must be made for each
DS1 to E1 DSO re-assignment. Time Slots 0 and 16 cannot be used on the E1 link. Time slot
0 is used for timing and time slot 16 is used for Channel Associated Signaling (CAS). TS16
is available in data-only applications.
2.3
Data Modules and Applications
This Integrated Access System supports multiple user cards for transport of digital data.
2.3.1
HSU Card (820260, 820360, 821260, 821360, 821460, 821570,
821660)
The HSU card allows the connection of high speed data terminal equipment (DTE) and data
communications equipment (DCE) to WAN links, server cards (ADPCM) or another HSU
card. The HSU card also provides low or mid-density connectivity for local, synchronous
peripherals such as, LAN Bridge/Routers and legacy SNA/SDLC devices. Additionally, these
high speed data cards also provide broadcast functionality for point to multi-point operation
suitable for applications such as video conferencing. When used in conjunction with an 8840
PRI Server Card, the HSU card can be used to provide switched data application functionality.
(i.e. telephone call centers). All HSU cards can be installed in any of the User Slots in an
Integrated Access System chassis.
The various models of the HSU Card are as follows:
•
820260 HSU card supports two RS530/RS449 data ports. It can also support V.35 and
RS232 data through the use of the appropriate Personality module. Personality modules
can be intermixed on the same RS530 card.
DS1
Transport
Network
E1
Transport
Network
CAUTION:
For c
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prot
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inst
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rep
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Pre
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VB
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HSU
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S
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HSU
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HSU
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35
S
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HSU
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530
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S 60
HSU-
T
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S 60
HSU
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530
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S
60
BRI
HSU
530
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S 6
0
P
2
P
1
P
4
P
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FXO
8139
N
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D
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T
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M
C
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P
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CPU
CLO
CK
NVRAM
W1-
1
CSU
W1
-2
DSX
WA
N
IF
T1+D
S1
IAD
W4-1
W3-1
W2-1
W1-1
W4-2
W3-2
W2-2
W1-2
