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Table Of Contents
6.2 Alarm Interface, FAN-ALARM
6.2.3 Electrical Parameters Alarm Input
6.2.4 Electrical Parameters Alarm Output
Physical Interfaces
6.1 Power Module, DC Power
The power module provides a -48 V DC supply.
6.1.1 Connectors
The -48 VDC supply input is provided via a 4 pin power connector (Molex Mini-fit 2x2); the pinouts are shown in Table 6-1.
6.1.2 Parameters
The -48VDC input conforms to the specifications in Table 6-2.
Table 6-2 Electrical Specifications at DC input
Power dissipation
Less than 120W
Fuse
7A
Battery voltage range
-40,5 to -72V DC
6.2 Alarm Interface, FAN-ALARM
6.2.1 Description
The ONS 15305 provides facilities to report a minimum of four auxiliary alarm inputs for associated equipment, for example, a power unit failure battery condition and an open cabinet door. It also provides two dedicated alarm outputs. The alarm outputs are related to the unit alarm indicator and the traffic alarm indicator. The input alarms are reported to the management system and are activated by a closed or open loop condition between a pair of contacts.
Figure 6-1 Alarm Input and Output Overview
6.2.2 Connectors
The alarm interface uses a 9-pin DSUB type connector. Table 6-2 lists the pin outs.
6.2.3 Electrical Parameters Alarm Input
6.2.4 Electrical Parameters Alarm Output
6.3 Auxiliary Interface
6.3.1 Description
The ONS 15305 offers a proprietary auxiliary interface for termination of overhead bytes selected from the different STM-N interfaces. The auxiliary interface is located on the system controller module, SYSCONT-SD128-RJ45.
Each STM-N interface can be configured to terminate one of the following overhead bytes: E1,F1, or E2. The byte to be terminated is selected from the network management system together with a unique time slot number n, where n equals 1-15 or 17-31. The auxiliary interface is a framed E1 interface, according to ITU-T G.704, where time slot 1-15 and 17-31 can carry one overhead byte each, according to the configuration described above.
The interface is synchronous which means that the incoming STM-N need to be synchronized with the T0 reference clock in the ONS 15305 and the incoming framed E1 need to be synchronized with the outgoing framed E1. Bit slips will occur if one of the interfaces is free running.
6.3.2 Connector
The auxiliary interface has an RJ-45 connector; Table 6-6 lists the pin outs.
Table 6-6 Pin Out Auxiliary interface
1
AUX_DO+
2
AUX_DO-
3
GND
4
AUX_DI+
5
AUX_DI-
6
AUX_SHIELD
7
NC
8
NC
Note
Pin 6 is always AC connected to ground. The outer screen is always direct connected to ground.
6.4 VT-100 Terminal Interface
6.4.1 Description
The ONS 15305 offers a VT-100 interface for connection of a CiscoEdgeCraft Terminal/CLI interface. The interface is running at a data rate of 19.200 baud and is located on the system controller module, SYSCONT-SD128-RJ45.
6.4.2 Connector
The RS232 interface for the ONS 15305 is provided via an RJ-45 connector; Table 6-7 lists the pinouts.
Table 6-7 Pin Out VT-100 Connector
1
GND
2
TxD
3
RxD
4
DB-TxD
5
GND
6
VT_CTS
7
DB_RxD
8
VT_RTS
Note
6.5 Synchronization Interface
6.5.1 Description
The interface is a 120 ohm 2048 kHz synchronization input and output port, with specifications according to ITU-T G.703; the interface is located on the System controller module, SYSCONT-SD128-RJ45.
6.5.2 Connectors
Input and output are provided on an 8-pin RJ-45 connector; Table 6-8 lists the pinouts.
Table 6-8 Pin Out Synchronization Port
1
Sync output +
2
Sync ouput --
3
GND
4
Sync input +
5
Sync input --
6
Screen, Note 1
7
NC
8
NC
Note
6.5.3 Other Interfaces
Other interface descriptions are found in the chapters describing each service module.
6.5.4 Prot Interface
For future release.
Posted: Fri Sep 14 10:51:31 PDT 2007
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