Siemens Saturn Iie Epabx General Description Manual

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SATURN IIE EPABX 
A30808-X5130-BllO-l-8928 
Installation Procedures 
Issue 1, May 1986 
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Figure 2.05 SATURN IIE Basic Cabinet (Front View) 
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							SATURN IIE EPABX 
Installation Procedures A30808-X5130-BllO-l-8928 
Issue 1. May 1986 
Figure 2.06 SATURN IIE Basic Cabinet and Expansion Cabinet (Rear View) 
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							SATURN HE EPABX A30808-X5130-BllO-143928 
Installation Procedures Issue 1, May 1986 
Figure 2.07 SATURN IIE Basic Cabinet and Expansion Cabinet (Front View) 
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							SATURN IIE EPABX A30808-X5130-BllO-l-6928 
installation Procedures Issue 1, May 1986 
BASIC 
Table 2.00 Identification and Functional Description of Equipment Shelves 
Basic Shelf. The basic shelf has both common equipment and peripheral PCBs which make up the com- 
mon control and switching network circuitry of the system. In addition, the basic shelf also contains three 
4-card Line/Trunk Unit (LTU) channel groups, .and four 2-card LTU channel groups. 
LTU ~ Line/Trunk Unit Shelf. One LTU shelf can be installed in the basic cabinet and two can be installed in the 
expansion cabinet. Each LTU shelf has peripheral interface PCBs. The peripheral PCBs provide the inter- 
face circuitry between the system and external devices. 
In addition, each LTU shelf is equipped with a Power Supply (LTUPS) for supplying the logic voltages 
of +I- 5 Vdc and +I- 12 Vdc. 
*’ NOTE: The guidelines shown in 
Table 2.04 should be followed when assigning peripheral PCBs to the 
basic and LTU shelves. 
PSU 
-48PS0 
-48PSl 
Table 2.01 Identification and Functional Description of Power and Distribution Equipment 
The PSU front panel provides the access and control point to various system maintenance functions and 
serves as the main AC and DC power distribution point to the following: 
a. AC power, via circuit breakers, to the PSU, LTUPS units, and -48PS0, and -48PSl (see Table 4.06 
for detailed information). 
b. Fused -48Vdc outputs for talk battery, signaling battery, SLMD and PIMD applications to all chan- 
nel groups in the basic and LTU Shelves and the input to the RGEN module ( see Table 4.06 for 
detailed information). 
c. Fused 9OVac. 20Hz for Ringing AC (RAC) and Ringing Message Waiting (RMW) to all channel 
groups in the basic and LTU shelves (see Table 4.06 for detailed information). 
The -48PS is an AC-to-DC converter which provides 48Vdc output voltage. This voltage is used for talk bat- 
tery, signal battery, SLMD and PIMD applications for station instruments, SDTs, trunks, and attendant con- 
soles, respectively. The -48PS also powers the RGEN modules. 
A single -48PS (-48PSO) is adequate for the basic cabinet applications. 
A second -48PS (-48PSl) is required when the expansion cabinet is included. 
Memory Support Module. The MSM contained within the PSU is an optional battery backup package that 
provides +SVdc to the RAM memory when the commercial AC power fails. In the event of such failure, the 
battery maintains the data stored in memory for at least five minutes. When the AC source is restored within 
this period , the memory does not have to be reloaded from floppy disk: system operation can begin im- 
mediately. The MSM is capable of anther 5minute backup cycle after 30 minutes of recharging. The MSM 
includes the battery charging circuitry and is under a “float” charge during normal operation. The MSM 
is located within the PSU. 
Table 2.02 Identification and Functional Description of Miscellaneous Equipment 
FDDO 
FDDl Floppy Disk Drive O/l. The floppy disk drive (FDD) provides the backup memory for the following: system 
initialization, system reload, administration, and maintenance testing. 
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SATURN IIE EPABX A30808-X5130-B110-l-8928 
Installation Procedures issue 1. May 1986 
Table 2.03 Identification, Location and Functional Description 
of Common Equipment PC& 
MNEMONIC TITLE AND FUNCTION 
SLOT NUMBER 
SMXTG Signal Multiplexer/ClocklTone Generator (SMXTG) PCB is divided into three func- 21 
tional parts: the signal multiplexer, the clock generator, and the tone generator. 
., 
The SMXTG is a hardware-controlled scanner/distributor, which provides an interface 
between the lineftrunk units and CIOI? The SMXTG handles control and status sig- 
nals for 32 highways. 
The clock generator provides the 8.192MHz, 4.048MHz, and 250Hz clocking signals 
required to operate the system. 
*’ 
The tone generator provides various tqne outputs from which all the system DTMF 
tones and supervisory tones are derived. The tone generator also provides a square 
wave timing signal for system generated dial pulses. 
MEM4 
The MEM4 PCB provides 1 Megabyte of memory and its supporting logic to store 
system data. The memory is organized as 512k words X 16 bits/word, with memory 
divided into sixteen 64K byte pages, write protection provided in 1K word segments. 
MEM4 is arranged for battery backup memory protection to safeguard stored data 
during short term power outages. Also, an error-correction code is provided to cor- 
rect any single-bit error and detect double-bit errors existing in a word. 27-29 
MEM3 
RAUP The MEM3 PCB provides 256k bytes of memory and its supporting logic to store sys- 
tern data. The memory is organized as 128k words X 16 bits/word, with memory write 
protection provided in 1K word segments. MEM3 is arranged for battery backup 
memory protection to safeguard stored data during short term power outages. Also, 
an error-correction code is provided to correct any single-bit error and detect double- 
bit errors existing in a word. . 
Remote Access Unit/ Ports. The RAUP allows remote access to the system for main- 
tenance and administrative functions. The RAUP is located in slot 25 of the basic 
shelf and does not use up any time slots. 27-29 
25 
CIOP 
Controller/Input Output Processor. Contains the Signal Buffer and processor and per- 
forms the input/output functions in the system. An RS-232-C connector is provided 
for the service terminal. 26 
PSC 
Parallel/Serial Converter.Converts serial PCM voice signals to parallel signals, and 
then multiplexes them into parallel flow. The parallel data is sent lo the Memory Con- 
trol and Attenuator (MCA) for further processing; the reverse function is performed 
by the PSC to provide serial voice signals back to the LTUs. 20,22 
PSC 0 - basic and LTU Shelf 1. 
PSC 1 - LTU Shelves 2 & 3. 
MCA 
Memory Control and Attenuator. The MCA is divided into two functional parts, a Time 
Switch Unit and Memory Control. The time switch unit makes ail two party connec- 
tions and provides attenuation (as required) for all system calls. The memory control 
receives data from the processor and causes the time switch to make the required 
connections. 23 
CONF 
Conference (CONF). The CONF function provides the switching control for confer- 
ences involving 3 to 7 parties plus attendant. 21 
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							Table 2.04 Identification, Location and Functional Description of Peripheral Interfacing PCBs 
MNEMONIC 
TITLE AND FUNCTION 
SLOT NUMBER 
SLMA-S 
Subscriber Line Module Analog - Station. The SLMA-S provides eight peripheral ports 
O-5,7-18,20-25 
for rotary dial and/or DTMF analog stations. 
SLMA-0 Subscriber Line Module Analog 
- Off-Premises Station. The SLMS-0 provides four 
peripheral ports for Off-Premises rotary dial and/or DTMF stations and the system. O-5,7-18,20-25 
SLMD Subscriber Line Module - Digital. The SLMD provides eight interfacing circuits be- 
tween the SDTs and the system. 
O-5,7-18,20-25 
S@6 
LTUC Subscriber Line Module Analog. The SLA16 PCB provides sixteen interfacing cir- 
0,1,4,5,7,8,11-14, 
cuits between rotary dial and/or DTMF stations and the system. 
17,18,20,21,24,25 
Line/Trunk Unit Control (LTUC). The LTUC buffers the signal between the common 
6,19 
equipment and the peripheral modules in the LTU shelves. It also provides fault 
monitoring and reporting of failure associated with the 128 ports it handles. Two are 
required on each LTU shelf. 
The LTUC in slot 6 provides exchange of signaling and information between channel 
groups 0 through 3 (128 ports) and the common equipment. 
The LTUC in slot 19 provides exchange of signaling and information between chan- 
nel groups 4 through 7 (128 ports) and the common equipment. 
DTMF 
Dual-Tone Multifrequency Receiver. The DTMF PCB detects and validates DTMF digits 
(tone pairs). In addition to dial tone detector circuitry, the DTMF PCB contains four 
circuits per PCB. A maximum of three DTMF PCBs are allowed per LTU shelf. The 
maximum number of MMF PCBs is eight per system, distributed evenly in the shelves. O-5,7-18,20-25 
PIMD 
Premium Instrument Module-Digital. The PIMD provides two peripheral ports between 
attendant consoles. The PIMD provides two circuits but requires eight time slots to 
operate. 
O-5,7-18,20-25 
TM BA-2 
2-Wire E&M Trunk. The TMBA-2 PCB provides four trunk circuits. Each is arranged 
for either one-way or two-way incoming and outgoing service with two-wire voice trans- 
mission and E&M signaling. O-5,7-18,20-25 
TMBA-4 
4-Wire E&M Trunk. The TMBA-4 PCB provides four trunk circuits. Each is arranged 
for either one-way or two-way incoming and outgoing service with two-wire voice trans- 
mission and E&M signaling. O-5,7-18,20-25 
TMBM 
Central Office Trunk. The TMBM PCB provides four trunk circuits. Each is arranged 
for either one-way or two-way incoming and outgoing service for Central Office (CO), 
Foreign Exchange (FX), and WATS applications. O-5,7-18,20-25 
TMIE 
Direct Inward Dialing Trunk. The TMIE PCB provides four trunk circuitsEach is ar- 
ranged for one-way direct inward dialing service applications from the CO. O-5,7-18,20-25  SATURN IIE EPABX 
A30808-X5130-BllO-l-8928 
Installation Procedures 
Issue 1, May 1986 
2.03 Port Equipment Numbering. The SATURN IIE Sys- 
tem utilizes a four-digit numbering plan to identify each port 
in the system. These four digits are used to identify the actu- 
al physical location of the port. Recall that the system cabi- 
nets include several shelves, and that each shelf contains a 
number of PCBs. Physically, as well as electronically, the sys- 
tem is divided into seven channel groups for the basic shelf 
and eight channel groups for each LTU shelf. The PCBs in 
each of these channel groups contain two, four, eight, or six- 
teen circuits each. Using the above data, the four-digit num- 
bering scheme was developed to allow each circuit in the 
system to be identified by a unique Port Equipment Number 
(PEN). The PEN numbering scheme is shown in Figure 2.08 
and explained below. For convenience, the four digits of the PEN are designated 
WXYZ. The “thousands” (W) digit of the PEN identifies the 
shelf in which the port is located: “0” for the basic shelf, and 
“1,” “ 2,” or “3,” for the applicable LTU shelf, as shown in 
Figure 2.08. The “hundreds” (X) digit of the PEN identifies 
the channel group in which the port is located, as shown in 
Figure 2.08. There are seven channel groups in the basic 
shelf, numbered 0 through 6, and eight channel groups in 
each LTU shelf, numbered 0 through 7 (see Figures 2.09 and 
2.10). The “tens” (Y) digit of the PEN identifies the channel 
group slot number. For the basic shelf, channel groups 0, 2, 
and 4 contain four card slots each (numbered 0, 2,4, and 6), 
and channel groups 1, 3, 5, and 6 contain two card slots each 
(numbered 0 and 2). For each LTU shelf. channel groups 0. 
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SATURN IIE EPABX 
Installation Procedures 
2, 4, and 6 contain four card slots each (numbered 0, 2, 4, 
and 6) and channel groups 1, 3, 5 and 7 contain two card slots 
each (numbered 0 and 2). See Figure 2.10. (The LTU card 
slots labeled “LTUC” contain no ports and therefore are not 
included in the numbering plan). 
The SATURN IIE System employs “virtual” slots in addition 
to the physical slots in each channel group. Two virtual slots 
are added to the four-card channel groups and two virtual slots 
are added to the two-card channel groups. The virtual slots 
are numbered 1 and 3 and are paired with slots 0 and 2, 
respectively. This has the effect of depicting the channel groups 
as six-slot and four-slot channel groups, respectively. The vir- 
tual slots are used in the numbering scheme only when a 
%-circuit card’is installed. For example, when an StA16 is in- 
stalled in slot 0, its top eight circuits are assigned to slot 0 and 
its bottom eight circuits are assigned to virtual slot 1. As each 
channel group is allotted only 32 time slots, only two SLA16s 
may be placed in any one channel group. In addition, the soft- 
ware interface enforces compliance with the following rules: 
a. A sixteen-circuit card (i.e., SLA16) cannot be used in slot 
4 or slot 6, regardless of the type of cards used in slots 
0 and 2. 
b. If an SLA16 is used in slot 0, slot 4 must be left empty. 
c. If an SLA16 is used in slot 2, slot 6 must be left empty. 
Caution 
Insertion of any card in slot 4 with an SLAl6 in slot 
0 (or in slot 6 with an SLAl6 in slot 2) will result in 
port contention and consequent system mal- 
function. 
The “units” (2) digit of the PEN identifies the circuit on the 
PCB that is associated with the port. The circuit numbers for 
PCBs are designated as follows: 
Two-circuit PCBs (PIMDs): circuits 0 and 2. 
Four-circuit PCBs (trunks, MMF receivers, and SLMA- 
OS): circuits 0, 2, 4, and 6. 
Eight-circuit PCBs (SLMA-Ss and SLMDs): circuits 0 
through 7. 
Sixteen-circuit PC& (SLAlGs): two sets of 0 through 7 
(see explanation for “tens” above). 
As an example of PEN numbering, assume that the circuit in 
question is circuit 5 located on the PCB in card slot 4 of chan- 
nel group 2 of shelf 3. The PEN number of the circuit would 
be 3245. That is: 
Shelf (W) 
3 
Channel Group (X) 2 
Slot (Y) 4 
Circuit (Z) 
5 
As a second example, assume that the circuit in question is 
the second circuit on the bottom half of an SLA16 PCB locat- 
ed in card slot 0 of channel group 1 of the basic shelf. In this 
case, the PEN number would be 0111. That is: 
Shelf (W) 
0 
Channel Group (X) 1 
Slot (Y) 1 
Circuit (Z) 1 A30608-X5130-BllO-l-8928 
Issue 1, May 1986 
Note, in this example, that the slot number is 1, even though 
the physical slot is slot 0, and that the circuit is PEN numbered 
1 even though it is the tenth circuit on the PCB. This is be- 
cause the second eight circuits on the SLAl6 are assigned to 
a virtual slot (in this case, slot 1) and numbered 0 to 7 as ex- 
plained above. 
2.04 Allocation of Printed Circuit Boards. The SATURN IIE 
System line and trunk PCBs, as noted previously, contain either 
two, four, eight or sixteen circuits each. (Each circuit uses one 
port on the system.) The system is arranged in channel groups 
of 32 channels each; a channel is used for each port. The basic 
shelf contains seven channel groups and the LTU shelf con- 
tains eight channel groups. Each channel group consists of 
universal card slots. Some of the channel groups contain four 
card slots each, and the others contain two card slots each. 
Allocation of both initially-equipped PCBs and future PCBs 
should be carefully planned during the configuration of the in- 
itial system site so as assign the ports in the most efficient man- 
ner. In a two-card channel-group, the use of anything other than 
16-port cards will cause a loss of ports. For instance, the as- 
signment of two four-port PCBs to a two-card channel group 
would only use eight ports in that channel group, thus making 
the remaining twenty-four portsunavailable for use. In four-card 
channel groups, use of cards of less than eight channels each 
will also result in the loss of availability of some of the channel 
group’s ports. 
The card slot position in each LTU shelf universally accepts 
any SATURN IIE peripheral interface module; however, certain 
limitations exist regarding the placement of these modules due 
to the distribution of time slots within a shelf. There are also 
guidelines that may be followed to achieve optimum time slot 
usage. These limitations and guidelines are based on the num- 
ber of time slots each peripheral interface module uses, as 
follows: 
Peripheral Interface Module Time Slots Used 
Subscriber Line Module -Analog-l6 (SLA16) 16 
Subscriber Line Module -Analog (SLMA-S) 8 
Premium Instrument Module - Digital (PIMD) 8 
Subscriber Line Module - Digital (SLMD) 8 
Central Office Trunk (TMBM) 4 
Direct Inward Dialing Trunk (TMIE) 4 
a-Wire E/M Tie Trunk (TMBA-2) 4 
4-Wire E/M Tie Trunk (TMBA-4) 4 
Dual Tone Multifrequency Receiver (DTMF) 4 
Subscriber Line Module - Analog - 
Off-Premise (SLMA-0) 4 
Except as noted above, 4 and 8 time slot peripheral interface 
modules can be used in any slot of any LTU. Certain uses of 
peripheral interface modules in SATURN IIE results in unusa- 
ble time slots, as follows: 
Unusable Time Slots 
2 Card LTU 4 Card LTU 
4 Time Slot Module 12 4 
0 Time Slot Module 8 0 
16 Time Slot Module 0 0 
While not prohibited by the hardware/software design, it is 
recommended that special consideration be given to the place- 
ment of E&M trunk modules in the LTUs so that the E&M leads 
do not share any MDF cables with audio pairs. If an E&M trunk 
module is placed into any of slots 0, 2, or 4 of a four-slot LTU, 
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SATURN IIE EPABX A30608-X5130-8110-l-8928 
Installation Procedures Issue 1, May 1986 
none of these slots should be filled with eight- or sixteen-port 
modules. If an E&M trunk module is placed into slot 6 of a four- 
slot LTU or either of slots 0 or 2 of the two-slot LTUs situated 
to the immediate riqht of the four-slot LTU. none of these slots 
should be filled with eight- or sixteen-port modules. 
In addition, the total number per shelf of any one type of mod- 
ule is limited 
by the power supply feeding that shelf. These 
limitations are as follows: 
SLMD Modules 
DTQF Modules 
Trunk Modules (2) 
Basic Shelf (1) LTU Shelf (1) 
is 16 
4 2 
20 16 Notes: 1. 
2. Each power supply (in the basic shelf) can drive 
more than the number of modules shown above. 
The number shown represents the maximum 
guaranteed quantities that can be powered by 
each supply, independent of how the rest of the 
shelf is populated. 
At least 50 per cent of the trunks are assumed 
to be TMBMs. As the percentage of TMBMs is 
increased, the trunk module drive capability in- 
creases. 
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							SATURN IIE EPABX 
A30808-X5130-BllO-143928 
,, Installation Procedures 
Issue 1, May 1986 
BL I 
I 
I w=3 LTU 
EXPANSION SHELF 
*’ 
CABINET 
-+I- . w=2 
LTU 
SHELF 
W=l 
LTU 
SHELF 
I 
[ SHELF  + 1 
I I I 
I 
I I I 
I I I I I I I I I v 
L 
L 
x=0 1 T 
U 2 
3 4 = L 6 7 
C 
C 
Y= 0121416 012 O(21416 
012 012(416 012 0121416 01 2 
LTU SHELF (W=l, 2, or 3) 
(front view) 
I I I 
I I I I I I I I I I 
x=0 
1 2 
3 4 5 6 COMMON 
EQUIPMENT 
Y= 01214(6 012 0)21416 
012 O(21416 012 012 
BASIC SHELF (W=O) 
(front view) 
Figure 2.08 Port Equipment Numbering Method 
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SATURN HE EPABX 
Installation Procedures A30808-X5130-6110-1-8928 
Issue 1, May 1986 
6 7 6 9 10 11 12 13 14 15 16 17 
16 19 20 21 22 23 24 25 26 27 26 29 30 31 
Figure 2.09 Basic Shelf Channel and Slot Number 
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