ADTRAN T200 FNID Spezifikationen PDF herunterladen (Seite 9)

61184002L3-5B 9

DS3 Interface

The OPTI-3 Controller Module fits into either the

wallmount chassis or the rackmount chassis. Each

DS3 interface is provided using two BNC I/O

connectors, one for the transmit signal and one for the

receive signal, located on the backplane of the chassis.

Both types of chassis provide six BNC I/O connectors

for coaxial cable.

Power Interface

The Total Access OPTI-3 chassis backplane utilizes

two –48 VDC, ±24 VDC buses to each OCM. The

OCM operates with either or both power buses active.

In addition, both buses are monitored for power

failure and an alarm is generated in the event of

power-loss to either buss. A power failure alarm is

only generated when a power source is first detected

on the power bus. A front panel LED indicator is

included on each OCM to provide visual power status

information.

User/Supervisory Interface

User access to the OCM is provided by either the craft

port (DB-9) on the front panel of the OCM, the

Ethernet port on the rear of the chassis, or the Data

Communications Channel (DCC) of the OC-3. There

are also pushbuttons on the front panel of the OCM

that provide an interface with the module.

Craft Port

The craft port provides user-friendly menus to

provision and monitor the OCM. The OPTI-3

supports provisional baud rates on the Craft port.

Both craft ports will always be provisioned to the

same baud rate. Also, the OPTI-3 system will require

a new login after a craft port cable is disconnected, as

well as, keyboard inactivity for 15 minutes (this timer

is provisionable). Craft port access is accomplished by

using a terminal acting as a VT100 emulator. The

terminal should be connected to the OCM using a

serial cable with a male DB-9 on the end connected to

the OPTI-3. A complete DB-9 cable of standard

RS-232 serial communication is necessary, an incom-

plete cable will result in indeterminate behavior. The

baud rate can be provisioned as 9600, 19200, 38400,

57600, or 115200 from the Management/Craft Menu.

The terminal initially should be provisioned for the

following settings:

• 9,600 bps

• 8 Data Bits

• No Parity

• 1 Stop Bit

• No Flow Control

If two OCMs are installed in the chassis, access is

provided to both OCMs through the craft-port

connection on either OCM.

Ethernet Port

The Ethernet Port on the rear of the Total Access

OPTI-3 RMC and WMC provides Telnet/TL1, Telnet/

Menu, SNMP, and TFTP access to the OCM. Also

Telnet/TL1, Telnet/Menu, SNMP, and TFTP support

is available over the fiber using the OSI/IP Tunnel.

Up to sixteen concurrent Telnet/TL1 sessions may be

used for administration, provisioning, performance

monitoring, and alarm monitoring. See Appendix B

for a list of available TL1 commands, responses, and

messages.

Up to sixteen concurrent Telnet/Menu sessions may

be used for administration, provisioning, performance

monitoring, and alarm monitoring. See the Menu

Structure section of this document.

The Ethernet Port provides IP (internet protocol)

access to the OPTI-3 OCM. Only IP and ARP

(Address Resolution Protocol) data will be processed

by the OCM. An IP Address, Subnet Mask, and

Default Gateway address must be provisioned

according to the connected IP network for data

operations to be performed. Instructions for setting up

the IP options for the OCM are provided in the Menu

Structure section of this document.

Data Communications Channel (DCC)

The OC-3 Data Communications Channel provides

TL1 management as well as IP communication. The

DCC channel always operates in a terminal/bridged

mode to support survival of single fiber failures.

The DCC channel is automatically configured when

the system is in a Back-to-Back environment (Central

Office or Remote Terminal). The DCC must be

manually configured when the system is installed

subtended from a SONET ADM.

See Appendix A for more information on the OPTI-3

SONET DCC. See Appendix B for TL1 Commands,

Responses, and Autonomous messages.

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