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The Cisco Optical Networking System (ONS) 15304 has a fixed configuration of eight E1 and eight IEEE 802.3 10BaseT routed network interfaces. The Cisco ONS 15304 networking equipment is commonly located either within a restricted access environment, such as a service office (OCU or central office), or within a customer premises, as customer premises equipment (CPE).
The Cisco ONS 15304 interfaces are not intended for direct connection to the loop plant or outside plant. The Cisco ONS 15304 interfaces are safety extra low voltage (SELV) rated. These SELV interfaces are intended for intrabuilding applications only (interface wiring contained within the building). Applications with interbuilding requirements (interface wiring not contained within the building) should be appropriately protected with customer installation interfaces and protection equipment, such as an E1 repeater or outside plant protection device.
This chapter describes the components, power requirements, size and weight, necessary clearances, and fan unit of the Cisco ONS 15304. In addition, the following are described:
The Cisco ONS 15304 is shipped with the following accessories:
The Cisco ONS 15304 has the following components:
Figure 2-1 shows the front panel connections for all facilities.
Table 2-1 lists the operating environment specifications for the Cisco ONS 15304.
| Characteristic | Specification |
|---|---|
Operating temperature | 0 to 45°C (32 to 113°F) |
Storage temperature | -40 to 125°C (-40 to 257°F) |
Relative humidity (operating) | 0 to 95%, noncondensing |
Relative humidity (storage) | 0 to 95%, noncondensing |
Altitude | 15 psi (absolute) |
Operating altitude | Up to 15,000 ft (4,000 m) |
Storage altitude | Up to 15,000 ft (4,000 m) |
Earthquake | Zone 4 |
The Cisco ONS 15304 uses -48 or -60 VDC with A and B feeds and can run on one feed. The operating input voltage range is -36 to -72 VDC, and power consumption is less than 100 watts (peak) and 80 watts (typical).
The power connection is made at the front of the system on A and B feeds. Each of the SAMs is powered from the A and B feeds. Overcurrent protection is provided in the form of fuses on the front panel of the system. The fuse is a fast-acting 250 VAC, F2A fuse (5x20 mm), and little fuse 216002 or Bussman GDA-2A style.
The Cisco ONS 15304 can be installed in a rack using 19-inch, 23-inch, or 500-mm rack-mount brackets. Before placing the Cisco ONS 15304 in a rack-mount or wiring closet, check the size and clearance requirements. The Cisco ONS 15304 measures 3.5 inches (88.9 mm) tall, approximately 11.8 inches (300 mm) deep (including cable bend radii), and 17.5 inches (444 mm) wide.
Airflow through the Cisco ONS 15304 is from right to left. Table 2-2 lists the minimum clearance needed for airflow around the Cisco ONS 15304.
| Area | Clearance |
|---|---|
Front | 0 in. |
Back | 0 in. |
Top and bottom | 0 in. |
Side | 2 in. (51 mm) |
Table 2-3 specifies the amount of space needed above and below the Cisco ONS 15304 in order to install other Cisco ONS 15304s or other equipment in a rack installation.
| Area | Clearance |
|---|---|
Top and bottom | 0 in. |
Sides | 2 in. (51 mm) |
Front (for cabinet installation) | 15 in. (380 mm) |
The SAM has an STM-1 fiber-optic interface that can terminate single-mode fiber FC connectors.
Output power is intermediate reach (approximately a 12-dB loss budget). The optical transmit power is fixed. Network engineers are required to use external attenuators to achieve a specific optical loss.
The Cisco ONS 15304 has a status LED for each optical facility located on each SAM. The LED is labeled "Optical Facility" and is controlled by the Cisco ONS 15304's embedded processor. For LED colors and their meanings, see Table 2-4.
| LED Color | Meaning |
|---|---|
No color | An off condition that indicates a particular optical facility connected to SAM A or SAM B is in an out-of-service state. |
Green | A normal condition that indicates the optical facility is in service with a valid signal and no fault conditions exist on the optical facility. |
Red | An abnormal condition that indicates the optical facility on the in-service SAM is in a signal degrade or loss-of-signal state. |
Table 2-5 and Table 2-6 describe the optical facility specifications for the transmitter section and the receiver section.
| Parameter | Symbol | Minimum | Maximum | Units |
|---|---|---|---|---|
Output center wavelength | | 1261 | 1360 | nm |
Output spectral width (RMS) | | --- | 7.7 | nm |
Average optical output power1 | Po | -15 | -8.0 | dBm |
| 1Output power is power coupled into a single-mode fiber. |
| Parameter | Symbol | Minimum | Typical | Maximum | Units |
|---|---|---|---|---|---|
Receiver sensitivity | --- | --- | --- | -31 | dBm |
Maximum input power | --- | -8.0 | --- | --- | dBm |
Two external synchronization inputs and outputs are available on the E1 Champ 50 connector. The pin assignments are described in Table 2-9.
The external balanced synchronization inputs have the following features:
The external balanced synchronization outputs have the following features:
Eight Ethernet ports are located on the front panel of the Cisco ONS 15304. Ethernet ports connect to the system through a female telco connector using the pin assignments shown in Table 2-7. The cable required is CAT3, UTP, and can be up to about 328 feet (100 m) long.
| Pin | Cable Color Code (Band/Stripe) | Signal | Pin | Cable Color Code (Band/Stripe) | Signal | |
|---|---|---|---|---|---|---|
1 | Blue/white | Not used |
| 26 | White/blue | Not used |
2 | Orange/white | RX1+ (R2) | 27 | White/orange | RX1- | |
3 | Green/white | TX1+ (R3) | 28 | White/green | TX1- | |
4 | Brown/white | Not used | 29 | White/brown | Not used | |
5 | Slate/white | RX2+ (R2) | 30 | White/slate | RX2- | |
6 | Blue/red | TX2+ (R3) | 31 | Red/blue | TX2- | |
7 | Orange/red | Not used | 32 | Red/orange | Not used | |
8 | Green/red | RX3+ (R2) | 33 | Red/green | RX3- | |
9 | Brown/red | TX3+ (R3) | 34 | Red/brown | TX3- | |
10 | Slate/red | Not used | 35 | Red/slate | Not used | |
11 | Blue/black | RX4+ (R2) | 36 | Black/blue | RX4- | |
12 | Orange/black | TX4+ (R3) | 37 | Black/orange | TX4- | |
13 | Green/black | Not used | 38 | Black/green | Not used | |
14 | Brown/black | RX5+ (R2) | 39 | Black/brown | RX5- | |
15 | Slate/black | TX5+ (R3) | 40 | Black/slate | TX5- | |
16 | Blue/yellow | Not used | 41 | Yellow/blue | Not used | |
17 | Orange/yellow | RX6+ (R2) | 42 | Yellow/orange | RX6- | |
18 | Green/yellow | TX6+ (R3) | 43 | Yellow/green | TX6- | |
19 | Brown/yellow | Not used | 44 | Yellow/brown | Not used | |
20 | Slate/yellow | RX7+ (R2) | 45 | Yellow/slate | RX7- | |
21 | Blue/violet | TX7+ (R3) | 46 | Violet/blue | TX7- | |
22 | Orange/violet | Not used | 47 | Violet/orange | Not used | |
23 | Green/violet | RX8+ (R2) | 48 | Violet/green | RX8- | |
24 | Brown/purple | TX8+ (R3) | 49 | Violet/brown | TX8- | |
25 | Slate/purple | Not used | 50 | Violet/slate | Not used |
Because a 50-pin telco connector is used, a port distributor or patch panel is required. The port distributor should have at least eight ports supporting RJ-45 connections. The wiring diagram for the RJ-45 connector to an 8-port distributor is shown in Table 2-8 along with the wiring information for RJ-45/10BaseT (EIA/TIA-356A).
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|
White/ orange | Orange/ white | White/ green | Blue/ white | White/ blue | Green/ white | White/ brown | Brown/ white |
T2 | R2 | T3 | R1 | T1 | R3 | T4 | R4 |
RX- | RX+ | TX- | Not used | Not used | TX+ | Not used | Not used |
Eight E1 (120-ohm balanced) ports are located on the front panel of the Cisco ONS 15304. E1 ports connect to the system through a female telco connector using the pin assignments shown in Table 2-9.
| Pin | Cable Color Code (Band/Stripe) | Signal | Pin | Cable Color Code (Band/Stripe) | Signal | |
|---|---|---|---|---|---|---|
1 | Blue/white | Port 1 TxRing |
| 26 | White/blue | Port 1 TxTip |
2 | Orange/white | Port 1 RxRing | 27 | White/orange | Port 1 RxTip | |
3 | Green/white | Not used | 28 | White/green | Not used | |
4 | Brown/white | Port 2 TxRing | 29 | White/brown | Port 2 TxTip | |
5 | Slate/white | Port 2 RxRing | 30 | White/slate | Port 2 RxTip | |
6 | Blue/red | Not used | 31 | Red/blue | Not used | |
7 | Orange/red | Port 3 TxRing | 32 | Red/orange | Port 3 TxTip | |
8 | Green/red | Port 3 RxRing | 33 | Red/green | Port 3 RxTip | |
9 | Brown/red | Not used | 34 | Red/brown | Not used | |
10 | Slate/red | Port 4 TxRing | 35 | Red/slate | Port 4 TxTip | |
11 | Blue/black | Port 4 RxRing | 36 | Black/blue | Port 4 RxTip | |
12 | Orange/black | Not used | 37 | Black/orange | Not used | |
13 | Green/black | Port 5 TxRing | 38 | Black/green | Port 5 TxTip | |
14 | Brown/black | Port 5 RxRing | 39 | Black/brown | Port 5 RxTip | |
15 | Slate/black | Not used | 40 | Black/slate | Not used | |
16 | Blue/yellow | Port 6 TxRing | 41 | Yellow/blue | Port 6 TxTip | |
17 | Orange/yellow | Port 6 RxRing | 42 | Yellow/orange | Port 6 RxTip | |
18 | Green/yellow | Sync A_OUT_RING | 43 | Yellow/green | Sync A_OUT_TIP | |
19 | Brown/yellow | Port 7 TxRing | 44 | Yellow/brown | Port 7 TxTip | |
20 | Slate/yellow | Port 7 RxRing | 45 | Yellow/slate | Port 7 RxTip | |
21 | Blue/violet | Sync A_IN_RING | 46 | Violet/blue | Sync A_IN_TIP | |
22 | Orange/violet | Port 8 TxRing | 47 | Violet/orange | Port 8 TxTip | |
23 | Green/violet | Port 8 RxRing | 48 | Violet/green | Port 8 RxTip | |
24 | Brown/purple | Sync B_OUT_RING | 49 | Violet/brown | Sync B_OUT_TIP | |
25 | Slate/purple | Sync B_IN_RING | 50 | Violet/slate | Sync B_IN_TIP |
You can use slip buffers to receive timing from the Cisco ONS 15304. Each of the eight E1 ports can be retimed with the SDH synchronization source to pass timing on to other equipment colocated with the system or to the end customer. Slip buffers allow controlled slips of E1 traffic.
An async console port is provided on the front panel of the Cisco ONS 15304 in the form of a female RJ-45 connector labeled "ASYNC" and uses a standard EIA/TIA-232 physical connection. The async console port supports asynchronous terminal mode (serial management interface) to be used to connect a craft interface terminal. The EIA/TIA-232 cable included in the accessory kit allows the port to be used with a PC.
Table 2-10 shows the pin assignments.
| Pin | Signal |
|---|---|
1 | CTS |
2 | DSR |
3 | RXD |
4 | SIG_GND |
5 | SIG_GND |
6 | TXD |
7 | DTR |
8 | RTS |
A 10BaseT LAN console port is provided for either a craft interface or for connecting to remote operations systems. This connection is made via an RJ-45 female connector on the system front panel labeled "LAN."
The port supports both TCP/IP and OSI protocols. Table 2-11 shows the LAN (10BaseT) management port pin assignments.
| Pin | Signal |
|---|---|
1 | TX+ |
2 | TX- |
3 | RX+ |
4 | Not used |
5 | Not used |
6 | RX- |
7 | Not used |
8 | Not used |
A site alarm port with a DB-15 connector is provided for connecting to an audible or visual alarm board. The pin assignments are shown in Table 2-12. The maximum voltage that can be applied to any pin on the site alarm connector is 70 VDC. The maximum current that can be applied between the contacts is 0.1 amp.
| Pin | Signal |
|---|---|
1 | Not connected |
2 | Major alarm (-) |
3 | CPU alarm (-) |
4 | Input sense 2 (-) |
5 | Critical alarm (+) |
6 | Minor alarm (+) |
7 | Input sense 1 (+) |
8 | Remote alarm cutoff (+) |
9 | Critical alarm (-) |
10 | Minor alarm (-) |
11 | Input sense 1 (-) |
12 | Remote alarm cutoff (-) |
13 | Major alarm (+) |
14 | CPU alarm (+) |
15 | Input sense 2 (+) |
Posted: Wed Feb 23 15:59:44 PST 2000
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