2-10
IMACS System Release 5.1.9
Reference Guide
Model No.
Running Head
Data Modules and Applications
Applications
Figure 2-4. Point to MultiPoint One-Way Video and Audio using HSUs
2.3.3
SRU Card (822060)
The SRU card enables high density connectivity for local, synchronous or asynchronous
peripherals. The 822060 SRU Card allows connections of up to ten RS-232, low-speed and
medium-speed (300 bps to 38.4 kbps) data terminals to the Integrated Access System. Since
an SRU port does not require a complete 64Kbps time slot, the Sub-Rate card allows you to
multiplex a number of devices into a single, subdivided time slot on a WAN card. SRU card
ports can also be multiplexed with voice traffic on an ADPCM engine.
Each RS-232 port can be independently programmed for synchronous (including HDLC) or
asynchronous operation. Synchronous operation is available at speeds of 2.4 Kbps up to 38.4
Kbps while for asynchronous the range is 300 bps up to 38.4 Kbps. Each synchronous port can
receive timing from either the DTE device or the system clock.
If the DTE supplies the transmit clocking, it must be synchronized with the system clocking
source. For each asynchronous data port, the stop bits, data bits and parity are user
configurable. The SRU incorporates a built-in V.14 Async-to-sync converter to avoid
over-sampling and consequently saves bandwidth. Asynchronous data circuits are converted
to synchronous mode by the SRU card prior to multiplexing onto a WAN aggregate.
Subrate data ports are multiplexed into industry standard DSO formats. The user may specify
the format of the DSO that the data port is assigned to. The choices are: (1) DSO-A which
allows only one data port to be mapped into the DSO and (2) DSO-B which allows multiple
data ports from multiple SRU cards in the system to be mapped into the same DSO time slot.
If the DSO-B format is selected, then the user can specify the type of DSO-B format required
(b-5, b-10 and b-20) and the sub-rate position that the data port will occupy within the DSO-B
frame.
CAU
TIO
N: F
or c
ontin
ued
pro
tect
ion
aga
inst
fire,
rep
lace
on
ly wi
th th
e sam
e
type
and
rati
ng
of fu
se
Pre
mis
ys Comm
unic
atio
ns, I
nc.
Model
IMA
CS/
600
T 5A
250
V
IEC
Fus
e
5A
SB
250V
UL/
CSA
24/4
8V
5
A
LISTED
9K
09
LR
77063
120-
200-2
40V
~
3A, 5
0 / 6
0 Hz
Tele
pho
ne
Equ
ipm
ent
Class 2
Pow
er So
urce
®
®
UL
+ -
+ -
+ -
R
G
R
C
O
M
VN
VB
VA
HSU-
T
530/
35
S
60
HSU
-T
530
/35
S
60
HSU
-T
530/3
5
S
60
HSU
-T
530/
35
S
60
HSU
-T
530
/35
S
60
HSU
-T
530/35
S
60
BRI
HSU
530
/35
S
60
P
2
P
1
P
4
P
3
FXO
8139
N
O
D
E
T
E
R
M
C
O
M
P
P
1
P
1
CPU
CLO
CK
NVR
AM
W1-1
CSU
W1
-2
DSX
WA
N
IF
T1+
DS1
FT1
FT1
1 WAN card
1 WAN
FT1
IAD
CAUTIO
N: Fo
r con
tinu
ed
prot
ection a
gain
st f
ire,
rep
lace on
ly w
ith
the
same
typ
e and rat
ing
of
fuse
Pre
mis
ys C
omm
unic
atio
ns, I
nc.
Mod
el IMA
CS/
600
T 5A
250V
IEC
Fus
e
5A SB
250V
UL/
CSA
24/48V
5A
LIS
TED
9K
09
LR 7
7063
120-20
0-240V~
3A,
50 /
60 H
z
Telephone
Equi
pment
Class
2 Po
wer So
urce
®
®
UL
+ -
+ -
+ -
R
G
R
C
O
M
VN
VB
VA
HSU-
T
530/
35
S
60
HSU
-T
530
/35
S
60
HSU
-T
530/35
S
60
HSU-
T
530/35
S
60
HSU
-T
530/
35
S
60
HSU
-T
530
/35
S
60
BRI
HSU
530/
35
S 60
P
2
P
1
P
4
P
3
FXO
813
9
N
O
D
E
T
E
R
M
C
O
M
P
P
1
P
1
CPU
CLOCK
NVRAM
W1
-1
CSU
W1-2
DSX
WAN
IF
T1+D
S1
IAD
Main Medical
Facility
Multichannel
Conferencing Unit
Video Codec
Remote
Medical
Facility
Video Codec
CAUTION:
For
cont
inue
d
prot
ectio
n ag
ainst
fire
,
repl
ace
only
with
the
sam
e
typ
e an
d rating
of
fus
e
Pre
misy
s Comm
unicati
ons
, Inc.
Mod
el IM
ACS
/600
T 5A
250V
IEC
Fus
e
5A
SB
250V
UL/C
SA
24/4
8V
5A
LISTE
D 9K
09
LR
77063
120-
200-
240V
~
3A, 50
/ 60 H
z
Tele
pho
ne
Equ
ipm
ent
Class 2 P
ower
Sou
rce
®
®
UL
+ -
+ -
+ -
R
G
R
C
O
M
VN
VB
VA
HSU
-T
530
/35
S
60
HSU
-T
530/
35
S
60
HSU-T
530
/35
S
60
HSU-
T
530
/35
S
60
HSU
-T
530
/35
S
60
HSU-
T
530
/35
S
60
BRI
HSU
530
/35
S
60
P
2
P
1
P
4
P
3
FXO
8139
N
O
D
E
T
E
R
M
C
O
M
P
P
1
P
1
CPU
CLO
CK
NVR
AM
W1-
1
CSU
W1
-2
DSX
WA
N
IF
T1+
DS1
IAD
Remote
Medical
Facility
Video Codec