> Technical Specifications
> Physical Dimensions
> The system can be mounted in any standard 19-inch (48.26 cm) equipment cabinet or telecommunications rack. Following are the dimensions for the chassis and each component that can be placed within the chassis.
> Chassis
> IMPORTANT: The dimensions in table below apply to the ST16.

> Physical Dimensions - Chassis
> Height | Width | Depth
> 24.50 in. (62.23 cm) | 17.5 in. (44.45 cm) | 24.0 in. (60.96 cm)

> Application Cards

> Physical Dimensions - Application Cards
> Height | Width | Depth
> 17.05 in. (46.31 cm) | 1.01in. (2.56 cm) | 14.10 in. (35.81cm)

> Line Cards

> Physical Dimensions - Line Cards
> Height | Width | Depth
> 8.59 in. (21.82 cm) | 1.01in. (2.56 cm) | 5.24 in. (13.31cm)

> Fan Tray Assemblies
> Lower Fan Tray

> Physical Dimensions - Lower Fan Tray
> Height | Width | Depth
> 2.50 in. (6.35 cm) | 16.25 in. (41.27 cm) | 17.25 in. (43.82 cm)

> Upper Fan Tray

> Physical Dimensions - Upper Fan Tray
> Height | Width | Depth
> 2.875 in. (7.30 cm) | 16.25 in. (41.27 cm) | 19.375 in. (49.21 cm)

> Power Filter Unit
> \

> Physical Dimensions - 125A Power Filter Unit
> Height | Width | Depth
> 3.6 in. (9.14 cm) | 8.25 in. (20.96 cm) | 5.12 in. (13.00 cm)

> Physical Dimensions - 165A Power Filter Unit
> Height | Width | Depth
> 3.6 in. (9.14 cm) | 8.25 in. (20.96 cm) | 5.12 in. (13.00 cm)

> Weight Specifications
> An empty chassis, containing no PFUs, bezels, fan trays, or blanking panels, weighs 65 lbs. (29.48 kg). In its standard shipping configuration, containing two power filter units, upper and lower fan trays, upper and lower bezels, and blanking panels, the chassis weighs
> 160 lbs. (72.57 kg).
> The total shipping weight, including wooden shipping container and packing materials, weighs 251 lbs. (113.85 kg).
> The following table identifies the maximum weights for fully-loaded systems—cards installed in all slots and all other components installed.

> Platform Fully Loaded Weight
> Platform | Fully-loaded Weight
> ST16 | 231 lbs. (104.78 kg)

> ST 16 Individual Card Weights

> Card | Weight
> Packet Accelerator Card (PAC) | 6.25 lbs (2.84 kg)
> Redundancy Crossbar Card (RCC) | 1.00 lbs (.45 kg)
> Switch Process I/O Card (SPIO) | 1.25 lbs (.57 kg)
> Switch Processor Card (SPC) | 5.00 lbs. (2.27 kg)
> Line Cards
> Fast Ethernet (10/100) Line Card (FELC) | 1.00 lbs (.45 kg)
> Gigabit Ethernet Line Card (GELC) | 1.00 lbs (.45 kg)

> Power Specifications
> The following table provides essential power specifications for the chassis and all associated cards within the system.

> ST16 Chassis Power Requirements
> Characteristic | Value
> Input Voltage | Maximum range: -40VDC to -60VDC Nominal range: -48VDC to -60 VDC
> TUV Rated Peak Current Load | 73A @ -48 VDC
> Maximum Peak Power Load | 3504W
> Chassis Max Power Load | 800W
> Line Card (rear-installed) Max Power Load |
> n | SPIO: 15W
> n | Ethernet 10/100: 13.5W
> n | Ethernet 1000: 10.5W
> n | RCC: 20W
> Application Card (front-installed) Max Power Load |
> n | SPC: 110W
> n | PAC: 130W

> Estimating Power Requirements
> Use the following formula to estimate total power consumption for each deployed chassis:
> (Total Application Card Max Power Load) + (Total Line Card Max Power Load) + (Chassis Max Power Load)
> The calculation for estimating the power required for an ST16 installation with 3 PACs s, 2 SPCs, 2 SPIOs, 2 RCCs, and 4 Ethernet 1000 line cards would be:
> (250W x 3) + (180W x 2) + ((15W x 2) + (20W x 2) + (13.5W x 4)) + 800W = 2034W
> Mounting Requirements
> Each 24.5 in. (62.23 cm.) height chassis requires 14 Rack Mounting Units (RMUs) of space. You can mount the system into any standard 19-inch (48.26 cm) equipment rack or Telco cabinet with the mounting brackets supplied with the chassis. Additional hardware, such as extension brackets, may be used to install the chassis in a standard 23-inch (58.42 cm) cabinet or rack. Both front and mid-mount installations are possible, depending on the position of the bracket on the chassis.
> You can mount a maximum of three chassis in a standard 48 RMU (7-feet) equipment rack or Telco cabinet, provided that all system cooling and ventilation requirements are met.
> CAUTION: When planning chassis installation, ensure that equipment rack or cabinet hardware does not hinder air flow at any of the intake or exhaust vents. Also, make sure that the rack/cabinet hardware, as well as the ambient environment, allow the system to function within the required limits. For more information, refer to Environmental Specifications chapter of this guide.
> Rack mounting requires the use of industry-standard equipment racks and cabinets and supplier-recommended fasteners. The following figure depicts how the chassis is mounted in a standard equipment rack.
> Example of Rack-Mounted Chassis
> Interface Specifications
> Following is a list of interfaces for use within the chassis. Each interface is shown with its specific pin-out.
> IMPORTANT: Some interfaces, such as an RJ-45 interface used for Ethernet connectivity, may have more than one pin-out configuration, depending on the type of cable used.
> SPIO Card Interfaces
> Each interface on the SPIO card is described below. In each accompanying figure, the interface is shown in the same orientation as the way it appears on the card.
> Console Port Interface
> The system’s console port is an RJ-45 RS-232 interface used to access the command line interface. The interface communicates at a baud rate of 9600 to 115,200 bps (115.2 Kbps). The default is 115,200 bps.
> The interface’s pin out detail is provided in the following figure and table.
> SPIO Console Port Pin-out

> SPIO Console Port Pin-out
> Pin | Signal Description | Signal Type
> 1 | Clear to Send (CTS) | Input
> 2 | Data set Ready (DSR) | Input
> 3 | Receive Data (RX) | Input
> 4 | Signal Ground (SGND) | N/A
> 5 | Ready to Send (RTS) | Output
> 6 | Transmit Data (TX) | Output
> 7 | Data Carrier Detect (DCD) | Input
> 8 | Data Terminal Ready (DTR) | Output

> Console Cable Specifications
> SPIO cards are shipped with a console cable assembly that includes a 7-foot serial cable with RJ-45 connectors on each end, and an RJ-45-to-DB-9 adapter. Use the RJ-45-to-DB-9 adapter to connect the console cable to a terminal server or terminal emulation device such as a laptop computer. The cable’s pin-out is provided in the following figure and table.
> SPIO Console Cable Assembly

> RJ-45 to DB-9 Cable
> Signal Description | Signal Type | RJ-45 Pin | DB-9 Pin
> Clear to Send (CTS) | Input | 1 | 7
> Data set Ready (DSR) | Input | 2 | 4
> Receive Data (RX) | Input | 3 | 3
> Signal Ground (SGND) | N/A | 4 | 5
> Ready to Send (RTS) | Output | 5 | 8
> Transmit Data (TX) | Output | 6 | 2
> Data Carrier Detect (DCD) | Input | 7 | 1
> Data Terminal Ready (DTR) | Output | 8 | 6

> To construct a RJ-45 to DB-25 cable for modem connectivity, refer to the table that follows.

> RJ-45 to DB-25 Cable
> Signal Description | Signal Type | RJ-45 Pin | DB-25 Pin
> Clear to Send (CTS) | Input | 1 | 5
> Data set Ready (DSR) | Input | 2 | 6
> Receive Data (RX) | Input | 3 | 3
> Signal Ground (SGND) | - | 4 | 7
> Ready to Send (RTS) | Output | 5 | 4
> Transmit Data (TX) | Input | 6 | 2
> Data Carrier Detect (DCD) | Output | 7 | 8
> Data Terminal Ready (DTR) | Output | 8 | 20

> Fiber SFP Interface
> The fiber SFP interface has two host connectors that receive SFP transceivers.
> SPIO Gb Ethernet Fiber SFP Pin-out

> Fiber SFP Interface Transmit and Receive Levels
> Signal | Level
> Max TX: | 0 dBm
> Min TX: | -9.5 dBm
> Max RX: | 0 dBm (saturation average power)
> Min RX: | -20 (typ) / -17 (max) dBm (sensitivity average power)

> 10/100/1000 Mbps RJ-45 Interface
> The two RJ-45 interfaces are auto-sensing 10/100/1000 Ethernet (10Base-T/100Base-TX/1000Base-T) that require unshielded twisted pair (UTP) copper cable. Refer to the following figure and table for pin-outs for the RJ-45 Ethernet ports.
> SPIO RJ-45 Ethernet Interface Pin-outs

> SPIO RJ-45 Ethernet Interface Pin-outs
> Pin | 10Base-T 10Mbps Cat3 | 100Base-TXx 100Mbps Cat5 | 1000Base-Tx 1Gbps Cat5+
> 1 | TX+ | TX+ | BI DA+
> 2 | TX- | TX- | BI DA-
> 3 | RX+ | RX+ | BI DB+
> 4 | na | na | BI DC+
> 5 | na | na | BI DC-
> 6 | RX- | RX- | BI DB-
> 7 | na | na | BI DD+
> 8 | na | na | BI DD-
> RX = Receive Data TX = Transmit Data BI = BI directional data DA, DB, DC, DD = Data Pair A, B, C, and D

> Central Office Alarm Interface
> The Central Office (CO) alarm interface is a 10-pin Molex connector supporting three dry-contact relay switches. The three normally closed (NC) relays can support normally open (NO) or NC devices. The following two figures show the pin-out details for this interface and the next figure shows an example CO alarm configuration.
> SPIO CO Alarms Interface Pin-out

> SPIO CO Alarms Interface Pin-out
> Pin | Signal
> 1 | Major Alarm - Normally closed
> 2 | Major Alarm - Common
> 3 | Major Alarm - Normally open
> 4 | Minor Alarm - Normally closed
> 5 | Minor Alarm - Common
> 6 | Minor Alarm - Normally open
> 7 | Critical Alarm - Normally closed
> 8 | Critical Alarm - Common
> 9 | Critical Alarm - Normally open
> 10 | Not Used

> The 8-foot CO alarm cable shipped with the chassis supports redundant SPIO card installations. The CO alarm cable is a “Y” cable, with two connectors on one end. Each connects to one of the SPIO cards. On the opposite end is a 9-pin terminal block that you can mount to the telco cabinet or equipment rack frame. The figure shows the CO Alarm cable. The following table provides the CO Alarm cable pin-outs.
> CO Alarms Cable Assembly

> CO Alarms Cable Pinout
> CO Alarms Interface Pin Number | Cable Connector Pin Number | Cable Wire Color | Cable Terminal Block Position Number | Signal
> 1 | 6 | Black | 1 | Major Alarm - Normally closed
> 2 | 7 | Orange | 2 | Major Alarm - Common
> 3 | 8 | Red | 3 | Major Alarm - Normally open
> 4 | 9 | Brown | 4 | Minor Alarm - Normally closed
> 5 | 10 | Yellow | 5 | Minor Alarm - Common
> 6 | 1 | Green | 6 | Minor Alarm - Normally open
> 7 | 2 | Blue | 7 | Critical Alarm - Normally closed
> 8 | 3 | Violet | 8 | Critical Alarm - Common
> 9 | 4 | Gray | 9 | Critical Alarm - Normally open
> 10 | 5 | Not Applicable | Not Applicable | Not Applicable

> Electrical Characteristics
> Each of the three dry-contact relay switches is rated to support a maximum switching current of 1A@30VDC.
> Central Office Alarm Wiring Example
> The example in the following figure shows how each of the three dry-contact relay switches can control up to two alarming devices. In this example, the CO alarm interface is connected to a CO alarms panel. A green LED is wired to indicate a normal condition (normally closed relay). A red LED is wired to indicate an alarm condition (normally open relay).
> CO Alarm Wiring Example
> In this wiring example, with each relay switch in its NC position, the green LED is illuminated. If a relay switch were in the NO position, the red LED would be illuminated.
> BITS Timing Interface
> IMPORTANT: This interface is not used on SPIOs when the system is configured to perform data services.
> BITS BNC Timing Interface
> The BNC version of the SPIO interface card uses a BNC connector instead of a wire wrap interface. The following figure shows the BITS BNC timing interface.
> SPIO BITS BNC Timing Interface Pin-out
> BITS 3-Pin Timing Interface
> This 3-pin version of the SPIO interface card uses a 3-pin wire-wrap connector instead of a BNC interface. The following figure shows the BITS 3-wire timing interface wire-wrap pin-out.
> SPIO T1 BITS Timing Wire-Wrap Pin-out
> Ethernet 10/100 Line Card Interfaces
> Each of the eight RJ-45 interfaces available on the Ethernet 10/100 line card supports auto-sensing 10 Base-Tx or 100 Base-Tx Ethernet interfaces.
> 10/100 Mbps RJ-45 Interface
> The RJ-45 interfaces on the Fast Ethernet line card support the following cable types and transfer rates. The following figure shows the pin-outs for the RJ-45 Ethernet ports.
> Ethernet 10/100 Line Card RJ-45 Ethernet Interface Pin-outs

> Ethernet 10/100 Line Card RJ-45 Ethernet Interface Pin-outs
> Pin | 10Base-T 10MbpsCat3 | 100Base-TX 100MbpsCat5
> 1 | TX+ | TX+
> 2 | TX- | TX-
> 3 | RX+ | RX+
> 4 | na | na
> 5 | na | na
> 6 | RX- | RX-
> 7 | na | na
> 8 | na | na

> Ethernet 1000 Line Card SFPs
> 1000Base-SX
> The 1000Base-SX fiber SFP interface on the Ethernet 1000 SX line card has one pair of fiber connectors, as shown below.
> Ethernet 1000 SX/ Fiber Connector

> SX Fiber Interface Transmit and Receive Levels
> Signal | Level
> Max TX: | 0 dBm
> Min TX: | -9.5 dBm
> Max RX: | 0 dBm (saturation average power)
> Min RX: | -20 (typ) / -17 (max) dBm (sensitivity average power)

> 1000Base-LX Interface
> The 1000Base-LX fiber SFP interface on the Ethernet 1000 LX line card has one pair of host connectors.
> Ethernet 1000 LX Line Card Fiber Connector

> LX Fiber Interface Transmit and Receive Levels
> Signal | Level
> Max TX: | 0 dBm
> Min TX: | -9.5 dBm
> Max RX: | 0 dBm (saturation average power)
> Min RX: | -20 (typ) / -19 (max) dBm (sensitivity average power)

> RJ-45 SFP Interface
> The 1000Base-T SFP interface on the Ethernet 1000 copper line cards require unshielded twisted pair (UTP) copper CAT-5 cable with BER less than 10e-10. Pin-outs for the RJ-45 Ethernet ports are:
> Ethernet 1000 RJ-45 Ethernet Interface Pin-outs

> Ethernet 1000 RJ-45 Ethernet Interface Pin-outs
> Pin | 1000Base-Tx 1Gbps Cat5+
> 1 | BI DA+
> 2 | BI DA-
> 3 | BI DB+
> 4 | BI DC+
> 5 | BI DC-
> 6 | BI DB-
> 7 | BI DD+
> 8 | BI DD-
> RX = Receive Data TX = Transmit Data BI = BI directional data DA, DB, DC, DD = Data Pair A, B, C, and D

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