Cisco ONS 15454 EC1-12 User manual

CHAPTER
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3
Electrical Cards
This chapter describes Cisco ONS 15454 electrical card features and functions. For installation and card
turn-up procedures, refer to the Cisco ONS 15454 Procedure Guide. For information on the electrical
interface assemblies (EIAs), see the “Electrical Interface Assemblies” section on page 15.
Chapter topics include:
•Electrical Card Overview, page 1
•Electrical Card Warnings, page 2
•EC1-12 Card, page 2
•DS1-14 and DS1N-14 Cards, page 5
•DS3-12 and DS3N-12 Cards, page 10
•DS3-12E and DS3N-12E Cards, page 14
•DS3XM-6 Card, page 18
3.1 Electrical Card Overview
For software and cross-connect card compatibility information, see the “Card Compatibility” section on
page 2.
Each card is marked with a symbol that corresponds to a slot (or slots) on the ONS 15454 shelf assembly.
The cards are then installed into slots displaying the same symbols. See the “Cards and Slots” section
on page 42 for a list of slots and symbols.
Table 3-1 lists the Cisco ONS 15454 electrical cards.
Table 3-1 Cisco ONS 15454 Electrical Cards
Electrical Card Name Description For additional information
EC1-12 The EC1-12 card provides 12 Telcordia-compliant,
GR-253 STS-1 electrical ports per card. Each port
operates at 51.840 Mbps over a single 750-ohm728A
or equivalent coaxial span.
See the “EC1-12 Card” section on page 2.
DS1-14 The DS1-14 card provides 14 Telcordia-compliant
GR-499 DS-1 ports. Each port operates at 1.544
Mbps over a 100−ohm twisted-pair copper cable.
See the “DS1-14 and DS1N-14 Cards”
section on page 5.

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Chapter 3 Electrical Cards
Electrical Card Warnings
3.2 Electrical Card Warnings
Warning Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself.
Caution When working with cards, wear the supplied ESD wristband to avoid ESD damage to the card. Plug the
wristband cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
3.3 EC1-12 Card
The EC1-12 card provides 12 Telcordia-compliant, GR-253 STS-1 electrical ports per card. Each port
operates at 51.840 Mbps over a single 75 ohm 728A or equivalent coaxial span.
STS path selection for UNEQ-P, AIS-P, and bit error rate (BER) thresholds is done on the SONET ring
interfaces (optical cards) in conjunction with the STS cross-connect. The EC1-12 terminates but does
not select the 12 working STS-1 signals from the backplane. The EC1-12 maps each of the 12 received
EC1 signals into 12 STS-1s with visibility into the SONET path overhead.
DS1N-14 The DS1N-14 card supports the same features as the
DS1-14 card but can also provide 1:N (N<5)
protection.
See the “DS1-14 and DS1N-14 Cards”
section on page 5.
DS3-12 The DS3-12 card provides 12 Telcordia-compliant
GR-499 DS-3 ports per card. Each port operates at
44.736 Mbps over a single 75-ohm 728A or
equivalent coaxial span.
See the “DS3-12 and DS3N-12 Cards”
section on page 10.
DS3N-12 The DS3N-12 supports the same features as the
DS3-12 but can also provide 1:N (N<5) protection. See the “DS3-12 and DS3N-12 Cards”
section on page 10.
DS3-12E The DS3-12E card provides 12 Telcordia-compliant
ports per card. Each port operates at 44.736 Mbps
over a single 75-ohm 728A or equivalent coaxial
span. The DS3-12E card provides enhanced
performance monitoring functions.
See the “DS3-12E and DS3N-12E Cards”
section on page 14.
DS3N-12E The DS3N-12E card supports the same features as
the DS3-12E but can also provide 1:N (N<5)
protection.
See the “DS3-12E and DS3N-12E Cards”
section on page 14.
DS3XM-6 (Transmux) The DS3XM-6 card provides six
Telcordia-compliant GR-499-CORE M13
multiplexing functions. The DS3XM-6 converts six
framed DS-3 network connections to 28x6 or 168
VT1.5s.
See the “DS3XM-6 Card” section on
page 18.
Table 3-1 Cisco ONS 15454 Electrical Cards (continued)
Electrical Card Name Description For additional information

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Chapter 3 Electrical Cards EC1-12 Card
An EC1-12 card can be 1:1 protected with anotherEC1-12 card but cannot protect more than one EC1-12
card. You must install the EC1-12 in an even-numbered slot to serve as a working card and in an
odd-numbered slot to serve as a protect card.
3.3.1 EC1-12 Slots and Connectors
You can install the EC1-12 card in Slots 1 to 6 or 12 to 17 (multispeed or high-speed card slot) on the
ONS 15454. Each EC1-12 interface features DSX-level (digital signal cross-connect frame) outputs
supporting distances up to 450 ft (137 m) depending on facility conditions. See “Electrical Card
Protection and the Backplane” section on page 4 for more information about electrical card slot
protection and restrictions.
3.3.2 EC1-12 Faceplate and Block Diagram
Figure 3-1 shows the EC1-12 faceplate and a block diagram of the card.
Figure 3-1 EC1-12 Faceplate and Block Diagram
Line
Interface
Unit
main STS1
protect STS1
STS-12/
12xSTS-1
Mux/Demux
ASIC
BTC
ASIC
STS-1
Framer
x12
61344
B
a
c
k
p
l
a
n
e
FAIL
ACT/STBY
SF
EC1
12

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Chapter 3 Electrical Cards
EC1-12 Card
3.3.3 EC1-12 Hosted by XC, XCVT, or XC10G
All 12 STS-1 payloads from an EC1-12 card are carried to the XC, XCVT, or XC10G card where the
payload is further aggregated for efficient transport. XC and XCVT cards can host a maximum of
288 bidirectional STS-1s. XC10G can host up to 1152 bidirectional STS-1s.
3.3.4 EC1-12 Card-Level Indicators
Table 3-2 describes the three card-level LEDs on the EC1-12 card.
3.3.5 EC1-12 Port-Level Indicators
You can obtain the status of the EC1-12 card ports using the LCD screen on the ONS 15454 fan tray. Use
the LCD to view the status of any port or card slot; the screen displays the number and severity of alarms
for a given port or slot.
3.3.6 EC1-12 Card Specifications
Note The I-Temp symbol is displayed on the faceplate of an I-Temp compliant card. A card without this
symbol is C-Temp compliant.
The EC1-12 card specifications are listed below:
•Input:
– Bit rate: 51.84 Mbps +/– 20 ppm
– Frame format: SONET
– Line code: B3ZS
– Termination: Unbalanced coaxial cable
– Input impedance: 75 ohms +/– 5%
– Cable loss: Max 450 ft 734A, RG-59, 728A/Max 79 ft RG-179
– AIS: TR-TSY-000191-compliant
Table 3-2 EC1-12 Card-Level Indicators
Card-Level Indicators Description
Red FAIL LED The red FAIL LED signifies that the EC1-12 card’s processor is not ready.
Replace the unit if the FAIL LED persists.
Green ACT LED The green ACT LED indicates that the EC1-12 card is operational and ready
to carry traffic.
Amber SF LED The amber SF LED indicates a signal failure or condition such as loss of
signal (LOS), loss of frame (LOF) or high bit error rate (BER) on one or
more of the card’s ports.

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Chapter 3 Electrical Cards DS1-14 and DS1N-14 Cards
•Output:
– Bit rate: 51.84 Mbps +/– 20 ppm
– Frame format: SONET
– Line code: B3ZS
– Termination: Unbalanced coaxial cable
– Input impedance: 75 ohms +/–5%
– Cable loss: Max 450 ft 734A, RG-59, 728A/Max 79 ft RG-179
– AIS: TR-TSY-000191-compliant
– Power level: –1.8 – +5.7 dBm
– Pulse shape: ANSI T1.102-1988 Figure 8
– Pulse amplitude: 0.36 to 0.85 V peak to peak
– Loopback modes: Terminal and facility
– Line build out: 0 to 225 ft; 226 to 450 ft
•Electrical interface: BNC or SMB connectors
•Operating temperature:
– C-Temp (15454-EC1-12): 0 to +55 degrees Celsius
– I-Temp (15454-EC1-12-T): –40 to +65 degrees Celsius
•Operating humidity: 5 to 95%, noncondensing
•Power consumption: 36.60 W, 0.76 A, 124.97 BTU/hr
•Dimensions:
– Height: 321.3 mm (12.650 in.)
– Width: 18.2 mm (0.716 in.)
– Depth: 228.6 mm (9.000 in.)
– Card weight: 2.0 lbs, 0.9 kg
•Compliance: ONS 15454 cards, when installed in a system, comply with these standards: Safety:
UL 1950, CSA C22.2 No. 950, EN 60950, IEC 60950
3.4 DS1-14 and DS1N-14 Cards
The ONS 15454 DS1-14 card provides 14 Telcordia-compliant, GR-499 DS-1 ports. Each port operates
at 1.544 Mbps over a 100 ohm twisted-pair copper cable. The DS1-14 card can function as a working or
protect card in 1:1 protection schemes and as a working card in 1:N protection schemes.
The DS1-14 card supports 1:1 protection. The DS1-14 can be a working card in a 1:N protection scheme
with the proper backplane EIA and wire-wrap or AMP Champ connectors. You can also provision the
DS1-14 to monitor for line and frame errors in both directions.
You can group and map DS1-14 card traffic in STS-1 increments to any other card in an ONS 15454
except DS-3 cards. Each DS-1 is asynchronously mapped into a SONET VT1.5 payload and the card
carries a DS-1 payload intact in a VT1.5. For performance monitoring purposes, you can gather
bidirectional DS-1 frame-level information (loss of frame, parity errors, cyclic redundancy check [CRC]
errors, and so on).

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Chapter 3 Electrical Cards
DS1-14 and DS1N-14 Cards
3.4.1 DS1N-14 Features and Functions
The DS1N-14 card supports the same features as the DS1-14 card in addition to enhanced protection
schemes. The DS1N-14 is capable of 1:N (N<5) protection with the proper backplane EIA and wire-wrap
or AMP Champ connectors. The DS1N-14 card can function as a working or protect card in 1:1 or 1:N
protection schemes.
3.4.2 DS1-14 and DS1N-14 Slots and Connectors
You can install the DS1-14 card in Slots 1 to 6 or 12 to 17 on the ONS 15454. Each DS1-14 port has
DSX-level (digital signal cross-connect frame) outputs supporting distances up to 655 ft.
If you use the DS1N-14 as a standard DS-1 card in a 1:1 protection group, you can install the
DS1N-14 card in Slots 1 to 6 or 12 to 17 on the ONS 15454. If you use the card’s 1:N functionality,
you must install a DS1N-14 card in Slots 3 and 15. Each DS1N-14 port features DSX-level outputs
supporting distances up to 655 ft depending on facility conditions.
3.4.3 DS1-14 and DS1N-14 Faceplate and Block Diagram
Figure 3-2 shows the DS1-14 faceplate and the block diagram of the card.

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Chapter 3 Electrical Cards DS1-14 and DS1N-14 Cards
Figure 3-2 DS1-14 Faceplate and Block Diagram
Cross
Connect
14 Line
Interface
Units STS1 to
14 DS1
Mapper Matrix
FLASH
DRAM
Mux/Demux
ASIC
Protection
Relay
Matrix
STS-1 / STS-12
uP
BTC
ASIC
61345
B
a
c
k
p
l
a
n
e
FAIL
ACT/STBY
DS1-
14
SF
33678 12931

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Chapter 3 Electrical Cards
DS1-14 and DS1N-14 Cards
Figure 3-3 shows the DS1N-14 faceplate and a block diagram of the card.
Figure 3-3 DS1N-14 Faceplate and Block Diagram
3.4.4 DS1-14 and DS1N-14 Hosted by the Cross-Connect
All 14 VT1.5 payloads from DS1-14 and DSIN-14 cards are carried in a single STS-1 to the XCVT or
XC10G card where the payload is further aggregated for efficient STS-1 transport. The XC10G and
XCVT cards manage up to 336 bidirectional VT1.5 ports.
3.4.5 DS1-14 and DS1N-14 Card-Level Indicators
Table 3-3 describes the three card-level LEDs on the DS1-14 and DS1N-14 card faceplates.
14 Line
Interface
Units STS1 to
14 DS1
Mapper
FLASH
DRAM
Mux/Demux ASIC
Protection
Relay
Matrix STS-1 / STS-12
uP
61346
BTC
ASIC
B
a
c
k
p
l
a
n
e
FAIL
ACT/STBY
SF
DS1N-
14
33678 12931

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Chapter 3 Electrical Cards DS1-14 and DS1N-14 Cards
3.4.6 DS1-14 and DS1N-14 Port-Level Indicators
You can obtain the status of the DS1-14 and DS1N-14 card ports using the LCD screen on the
ONS 15454 fan-tray assembly. Use the LCD to view the status of any port or card slot; the screen
displays the number and severity of alarms for a given port or slot.
3.4.7 DS1-14 and DS1N-14 Card Specifications
Note The I-Temp symbol is displayed on the faceplate of an I-Temp compliant card. A card without this
symbol is C-Temp compliant.
DS1-14 and DS1N-14 card specifications are listed below:
•Input:
– Bit rate: 1.544 Mbps +/– 32 ppm
– Frame format: Off, SF (D4), ESF
– Line code: AMI, B8ZS
– Termination: Wire-wrap, AMP Champ
– Input impedance:100 ohms
– Cable loss: Max 655 ft ABAM #22 AWG
– AIS: TR-TSY-000191-compliant
•Output:
– Bit rate: 1.544 Mbps +/– 32 ppm
– Frame format: Off, SF (D4), ESF
– Line code: AMI, B8ZS
– Termination: Wire-wrap, AMP Champ
– Input impedance:100 ohms
– Cable loss: Max 655 ft ABAM #22 AWG
– AIS: TR-TSY-000191-compliant
Table 3-3 DS1-14 and DS1N-14 Card-Level Indicators
Card-Level Indicators Description
Red FAIL LED The red FAIL LED indicates that the card’s processor is not ready. Replace
the card if the red FAIL LED persists.
ACT/STBY LED
Green (Active)
Amber (Standby)
The green/amber ACT/STBY LED indicates whether the DS1-14 card is
operational and ready to carry traffic (green) or in standby mode (amber).
Amber SF LED The amber SF LED indicates a signal failure or condition such as LOS, LOF,
or high BERs on one or more of the card’s ports.

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Chapter 3 Electrical Cards
DS3-12 and DS3N-12 Cards
– Power level: 12.5 to 17.9 dBm centered @ 772 KHz, –16.4 to –11.1 dBm centered at 1544 KHz
– Pulse shape: GR-499-CORE Figure 9-5
– Pulse amplitude: 2.4 to 3.6 V peak-to-peak
– Loopback modes: Terminal and facility
•Electrical interface: BNC or SMB connectors
•Surge protection: GR-1089
•Operating temperature:
– C-Temp (15454-DS1-14 and 15454-DS1N-14): 0 to +55 degrees Celsius
– I-Temp (15454-DS1-14-T and 15454-DS1N-14-T): –40 to +65 degrees Celsius
•Operating humidity: 5 to 95%, noncondensing
•Power consumption: 12.60 W, 0.26 A, 43.02 BTU/hr
•Dimensions:
– Height: 321.3 mm (12.650 in.)
– Width: 18.2 mm (0.716 in.)
– Depth: 228.6 mm (9.000 in.)
– Card weight: 0.8 kg (1.8 lbs), 0.8 kg
•Compliance: ONS 15454 cards, when installed in a system, comply with these standards: Safety:
UL 1950, CSA C22.2 No. 950, EN 60950, IEC 60950
3.5 DS3-12 and DS3N-12 Cards
The ONS 15454 DS3-12 card provides 12 Telcordia-compliant, GR-499 DS-3 ports per card. Each port
operates at 44.736 Mbps over a single 75 ohm 728A or equivalent coaxial span. The DS3-12 card
operates as a working or protect card in 1:1 protection schemes and as a working card in 1:N protection
schemes.
The DS3-12 card supports 1:1 protection with the proper backplane EIA. EIAs are available with BNC
or SMB connectors.
Caution When a protection switch moves traffic from the DS3-12 working/active card to the DS3-12
protect/standby card, ports on the now active/standby card cannot be taken out of service. Lost traffic
can result if you take a port out of service even if the DS3-12 standby card no longer carries traffic.
3.5.1 DS3N-12 Features and Functions
Other than the protection capabilities, the DS3-12 and DS3N-12 cards are identical. The DS3N-12 can
operate as the protect card in a 1:N (N<5) DS3 protection group. It has additional circuitry not present
on the basic DS3-12 card that allows it to protect up to five working DS3-12 cards. The basic DS3-12
card can only function as the protect card for one other DS3-12 card.

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Chapter 3 Electrical Cards DS3-12 and DS3N-12 Cards
3.5.2 DS3-12 and DS3N-12 Slots and Connectors
You can install the DS3-12 or DS3N-12 card in Slots 1 to 6 or 12 to 17 on the ONS 15454. Each DS3-12
or DS3N-12 card port features DSX-level outputs supporting distances up to 137 m (450 ft) depending
on facility conditions. With the proper backplane EIA, the card supports BNC or SMB connectors. See
“Electrical Card Protection and the Backplane” section on page 4 for more information about electrical
card slot protection and restrictions.
3.5.3 DS3-12 and DS3N-12 Faceplate and Block Diagram
Figure 3-4 shows the DS3-12 faceplate and a block diagram of the card.
Figure 3-4 DS3-12 Faceplate and Block Diagram
BTC
ASIC
DS3A
ASIC
61347
Protection
Relay
Matrix
B
a
c
k
p
l
a
n
e
12
Line
Interface
Units
FAIL
ACT/STBY
SF
DS3
12
33678 12931

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Chapter 3 Electrical Cards
DS3-12 and DS3N-12 Cards
Figure 3-5 shows the DS3N-12 faceplate and a block diagram of the card.
Figure 3-5 DS3N-12 Faceplate and Block Diagram
3.5.4 DS3-12 and DS3N-12 Card-Level Indicators
Table 3-4 describes the three card-level LEDs on the DS3-12 and DS3N-12 card faceplates.
BTC
ASIC
DS3A
ASIC
61348
Protection
Relay
Matrix
B
a
c
k
p
l
a
n
e
12
Line
Interface
Units
FAIL
ACT/STBY
SF
DS3N
12
1345987
Table 3-4 DS3-12 and DS3N-12 Card-Level Indicators
Card-Level Indicators Description
Red FAIL LED The red FAIL LED indicates that the card’s processor is not ready. Replace
the card if the red FAIL LED persists.
ACT/STBY LED
Green (Active)
Amber (Standby)
When the ACTV/STBY LED is green, the DS3-12 card is operational and
ready to carry traffic. When the ACTV/STBY LED is amber, the DS3-12
card is operational and in standby (protect) mode.
Amber SF LED The amber SF LED indicates a signal failure or condition such as port LOS.

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Chapter 3 Electrical Cards DS3-12 and DS3N-12 Cards
3.5.5 DS3-12 and DS3N-12 Port-Level Indicators
You can find the status of the 12 DS3-12 and 12 DS3N-12 card ports using the LCD screen on the
ONS 15454 fan-tray assembly. Use the LCD to view the status of any port or card slot; the screen
displays the number and severity of alarms for a given port or slot.
3.5.6 DS3-12 and DS3N-12 Card Specifications
Note The I-Temp symbol is displayed on the faceplate of an I-Temp compliant card. A card without this
symbol is C-Temp compliant.
DS3-12 and DS3N-12 card specifications are listed below:
•Input:
– Bit rate: 44.736 Mbps +/– 20 ppm
– Frame format: DS-3 ANSI T1.107-1988
– Line code: B3ZS
– Termination: Unbalanced coaxial cable
– Input impedance: 75 ohms +/–5%
– Cable loss: Max 450 ft 734A, RG-59, 728A/Max 79 ft RG-179
– AIS: TR-TSY-000191-compliant
•Output:
– Bit rate: 44.736 Mbps +/– 20 ppm
– Frame format: DS-3 ANSI T1.107-1988
– Line code: B3ZS
– Termination: Unbalanced coaxial cable
– Input impedance: 75 ohms +/–5%
– Cable loss: Max 450 ft 734A, RG-59, 728A/Max 79 ft RG-179
– AIS: TR-TSY-000191-compliant
– Power level: –1.8 to +5.7 dBm
– Pulse shape: ANSI T1.102-1988 Figure 8
– Pulse amplitude: 0.36 to 0.85 V peak-to-peak
– Loopback modes: Terminal and facility
– Line build out: 0 to 225 ft; 226 to 450 ft
•Electrical interface: BNC or SMB connectors
•Surge protection: GR-1089
•Operating temperature:
– C-Temp (15454-DS3-12 and 15454-DS3N-12): 0 to +55 degrees Celsius
– I-Temp (15454-DS3-12-T and 15454-DS3N-12-T): –40 to +65 degrees Celsius

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Chapter 3 Electrical Cards
DS3-12E and DS3N-12E Cards
•Operating humidity: 5 to 95%, noncondensing
•Power consumption: 38.20 W, 0.79 A, 130.43 BTU/hr
•Dimensions:
– Height: 321.3 mm (12.650 in.)
– Width: 18.2 mm (0.716 in.)
– Depth: 228.6 mm (9.000 in.)
– DS3-12: Card weight: 1.7 lbs, 0.7 kg
– DS3N-12: Card weight: 0.8 kg (1.8 lbs), 0.8 kg
•Compliance: ONS 15454 cards, when installed in a system, comply with these standards: Safety:
UL 1950, CSA C22.2 No. 950, EN 60950, IEC 60950
3.6 DS3-12E and DS3N-12E Cards
The ONS 15454 DS3-12E card provides 12 Telcordia-compliant ports per card. Each port operates at
44.736 Mbps over a single 75 ohm 728A or equivalent coaxial span. The DS3-12E card provides
enhanced performance monitoring functions. The DS3-12E can detect several different errored logic bits
within a DS3 frame. This function allows the ONS 15454 to identify a degrading DS3 facility caused by
upstream electronics (DS3 Framer). In addition, DS3 frame format auto detection and J1 path trace are
supported. By monitoring additional overhead in the DS3 frame, subtle network degradations can be
detected.
The following list summarizes DS3-12E card features:
•Provisionable framing format M23, C-bit or unframed
•Autorecognition and provisioning of incoming framing
•P-bit monitoring
•C-bit parity monitoring
•X-bit monitoring
•M-bit monitoring
•F-bit monitoring
•Far-end block errors (FEBE) monitoring
•Far-end alarm and control (FEAC) status and loop code detection
•Path trace byte support with TIM-P alarm generation
The DS3-12E supports a 1:1 protection scheme, meaning it can operate as the protect card for one other
DS3-12E card.
3.6.1 DS3N-12E Features and Functions
The DS3N-12E can operate as the protect card in a 1:N (N<5) DS3 protection group. It has additional
circuitry not present on the basic DS3-12E card that allows it to protect up to five working DS3-12E
cards. The basic DS3-12E card can only function as the protect card for one other DS3-12E card.

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Chapter 3 Electrical Cards DS3-12E and DS3N-12E Cards
3.6.2 DS3-12E and DS3N-12E Slots and Connectors
You can install the DS3-12E and DS3N-12E cards in Slots 1 to 6 or 12 to 17 on the ONS 15454. Each
DS3-12E and DS3N-12E port features DSX-level outputs supporting distances up to 137 m (450 ft).
With the proper backplane EIA, the card supports BNC or SMB connectors. See “Electrical Card
Protection and the Backplane” section on page 4 for more information about electrical card slot
protection and restrictions.
3.6.3 DS3-12E Faceplate and Block Diagram
Figure 3-6 shows the DS3-12E faceplate and a block diagram of the card.
Figure 3-6 DS3-12E Faceplate and Block Diagram
61349
B
a
c
k
p
l
a
n
e
DS3
ASIC
Flash
uP bus
SDRAM
BTC
ASIC
Line
Interface
Unit #1
main DS3-m1
protect DS3-p1
Line
Interface
Unit #1
main DS3-m12
protect DS3-p12
Processor
OHP
FPGA
BERT
FPGA
FAIL
ACT
SF
DS3
12E

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Chapter 3 Electrical Cards
DS3-12E and DS3N-12E Cards
Figure 3-7 shows the DS3N-12E faceplate and a block diagram of the card.
Figure 3-7 DS3N-12E Faceplate and Block Diagram
3.6.4 DS3-12E and DS3N-12E Card-Level Indicators
Table 3-5 describes the three card-level LEDs on the DS3-12E and DS3N-12E card faceplates.
61350
B
a
c
k
p
l
a
n
e
DS3
ASIC
Flash
uP bus
SDRAM
BTC
ASIC
Line
Interface
Unit #1
main DS3-m1
protect DS3-p1
Line
Interface
Unit #1
main DS3-m12
protect DS3-p12
Processor
OHP
FPGA
BERT
FPGA
FAIL
ACT/STBY
SF
DS3 N
12E
Table 3-5 DS3-12E and DS3N-12E Card-Level Indicators
Card-Level Indicators Description
Red FAIL LED The red FAIL LED indicates that the card’s processor is not ready. Replace
the card if the red FAIL LED persists.
ACT/STBY LED
Green (Active)
Amber (Standby)
When the ACTV/STBY LED is green, the DS3-12E card is operational and
ready to carry traffic. When the ACTV/STBY LED is amber, the DS3-12E
card is operational and in standby (protect) mode.
Amber SF LED The amber SF LED indicates a signal failure or condition such as port LOS,
AIS, and so on.

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Chapter 3 Electrical Cards DS3-12E and DS3N-12E Cards
3.6.5 DS3-12E and DS3N-12E Port-Level Indicators
You can find the status of the DS3-12E and DS3N-12E card ports using the LCD screen on the
ONS 15454 fan-tray assembly. Use the LCD to quickly view the status of any port or card slot; the screen
displays the number and severity of alarms for a given port or slot.
3.6.6 DS3-12E and DS3N-12E Card Specifications
Note The I-Temp symbol is displayed on the faceplate of an I-Temp compliant card. A card without this
symbol is C-Temp compliant.
DS3-12E and DS3N-12E card specifications are listed below:
•Input:
– Bit rate: 44.736 Mbps +/– 20 ppm
– Frame format: DS-3 ANSI T1.107-1988
– Line code: B3ZS
– Termination: Unbalanced coaxial cable
– Input impedance: 75 ohms +/–5%
– Cable loss: Max 450 ft 734A, RG-59, 728A/Max 79 ft RG-179
– AIS: TR-TSY-000191-compliant
•Output:
– Bit rate: 44.736 Mbps +/– 20 ppm
– Frame format: DS-3 ANSI T1.107-1988
– Line code: B3ZS
– Termination: Unbalanced coaxial cable
– Input impedance: 75 ohms +/–5%
– Cable loss: Max 450 ft 734A, RG-59, 728A/Max 79 ft RG-179
– AIS: TR-TSY-000191-compliant
– Power level: –1.8 to +5.7 dBm (The power level is for a signal of all ones and is measured at a
center frequency of 22.368 MHz (+/-KHz) bandwidth.)
– Pulse shape: ANSI T1.102-1988 Figure 8
– Pulse amplitude: 0.36 - 0.85 V peak-to-peak
– Loopback modes: Terminal and facility
– Line build out: 0 to 225 ft; 226 to 450 ft
•Electrical interface: Connectors: BNC or SMB
•Surge protection: GR-1089
•Operating temperature: I-Temp (15454-DS3-12E-T and 15454-DS3N-12E-T): –40 to +65 degrees
Celsius
•Operating humidity: 5 to 95%, noncondensing

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Chapter 3 Electrical Cards
DS3XM-6 Card
•Power consumption: 26.80 W, 0.56 A, 91.51 BTU/hr
•Dimensions:
– Height: 321.3 mm (12.650 in.)
– Width: 18.2 mm (0.716 in.)
– Depth: 228.6 mm (9.000 in.)
– Depth with backplane connector: 9.250 in.
– DS3-12E Card weight: 0.8 kg (1.8 lbs), 0.8 kg
– DS3N-12E Card weight: 1.9 lbs, 0.8 kg
•Compliance: ONS 15454 cards, when installed in a system, comply with these standards: Safety:
UL 1950, CSA C22.2 No. 950, EN 60950, IEC 60950
3.7 DS3XM-6 Card
The DS3XM-6 card, commonly referred to as a transmux card, provides six Telcordia-compliant,
GR-499-CORE M13 multiplexing functions. The DS3XM-6 converts six framed DS-3 network
connections to 28x6 or 168 VT1.5s. You cannot create circuits from a DS3XM-6 card to a DS-3 card.
DS3XM-6 cards operate at the VT1.5 level.
3.7.1 DS3XM-6 Slots and Connectors
The DS3XM-6 card supports 1:1 protection with the proper backplane EIA. EIAs are available with BNC
or SMB connectors.
You can install the DS3XM-6 in Slots 1 to 6 or 12 to 17. Each DS3XM-6port features DSX-level outputs
supporting distances up to 137 m (450 ft) depending on facility conditions. See “Electrical Card
Protection and the Backplane” section on page 4 for more information about electrical card slot
protection and restrictions.
3.7.2 DS3XM-6 Faceplate and Block Diagram
Figure 3-8 shows the DS3XM-6 faceplate and a block diagram of the card.

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Chapter 3 Electrical Cards DS3XM-6 Card
Figure 3-8 DS3XM-6 Faceplate and Block Diagram
3.7.3 DS3XM-6 Hosted By XCVT
The DS3XM-6 card works in conjunction with the XCVT card. A single DS3XM-6 can demultiplex
(map down to a lower rate) six DS-3 signals into 168 VT1.5s that the XCVT card then manages and cross
connects. XCVT cards host a maximum of 336 bidirectional VT1.5s or two DS3XM-6 cards. In most
network configurations two DS3XM-6 cards are paired together as working and protect cards.
BTC
ASIC
6 x Line
Interface
Units 6 STS1 to
28 DS1
Mapper
FLASH DC/DC
unit
DRAM
Mux/Demux ASIC
Protection
Relay
Matrix 6 STS-1 / STS-12
uP
6 x M13
Units
61351
Mapper unit
B
a
c
k
p
l
a
n
e
FAIL
ACT
SF
DS3XM
6
1345987

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Chapter 3 Electrical Cards
DS3XM-6 Card
3.7.4 DS3XM-6 Card-Level Indicators
Table 3-6 describes the three card-level LEDs on the DS3XM-6 card faceplate.
3.7.5 DS3XM-6 Port-Level Indicators
You can find the status of the six DS3XM-6 card ports using the LCD screen on the ONS 15454 fan-tray
assembly. Use the LCD to quickly view the status of any port or card slot; the screen displays the number
and severity of alarms for a given port or slot.
3.7.6 DS3XM-6 Card Specifications
Note The I-Temp symbol is displayed on the faceplate of an I-Temp compliant card. A card without this
symbol is C-Temp compliant.
DS3XM-6 card specifications are listed below:
•Input:
– Bit rate: 44.736 Mbps +/–20 ppm
– Frame format: DS-3 ANSI T1.107-1988
– Line code: B3ZS
– Termination: Unbalanced coaxial cable
– Input impedance: 75 ohms +/–5%
– Cable loss: Max 450 ft 734A, RG-59, 728A/Max 79 ft RG-179
– AIS: TR-TSY-000191-compliant
•Output:
– Bit rate: 44.736 Mbps +/– 20 ppm
– Frame format: DS-3 ANSI T1.107-1988
– Line code: B3ZS
– Termination: Unbalanced coaxial cable
– Input impedance: 75 ohms +/–5%
Table 3-6 DS3XM-6 Card-Level Indicators
Card-Level Indicators Description
Red FAIL LED The red FAIL LED indicates that the card’s processor is not ready. Replace
the card if the red FAIL LED persists.
ACT/STBY LED
Green (Active)
Amber (Standby)
When the ACTV/STBY LED is green, the DS3XM-6 card is operational and
ready to carry traffic. When the ACTV/STBY LED is amber, the DS3XM-6
card is operational and in standby in a 1:1 protection group.
Amber SF LED The amber SF LED indicates a signal failure or condition such as LOS, LOF,
or high BER on one or more of the card’s ports.