ADTRAN T200 FNID Especificaciones descargar pdf (Pagina 5)

61184002L3-5B 5

If the OPTI-3 System is to be configured as a

redundant system, repeat the preceding procedure for

the OCM for slot B. If the OPTI-3 System is to be

configured as a non-redundant system, a blank front

panel (P/N 1184005L1) must be installed in the empty

slot to meet NEBS Level 3 requirements.

Initial Installation Provisioning Options

Upon initial installation of the OCM, the unit will be

provisioned according to factory default settings. See

Table 2 for a list of all available options and the

corresponding default provisioning options (listed in

boldface type).

All provisioning will be performed through menus

provided by the OCM via one of the available user

interfaces (see User/Supervisory Interface in the

Operation section of this practice). There are no

onboard DIP switches or jumpers. The unit will retain

provisioning data in a nonvolatile memory device in

case of a loss of power to the module.

Linked Provisioning

If the OCM being installed is the standby unit the

provisioning settings of the online unit will be written

to the standby unit. Linked Provisioning is always

enabled. The OCM Service State is not linked and

must be provisioned separately for each OCM.

3. OPERATION

The Total Access OPTI-3 Controller Module provides

an OC-3 interface to the network and three

ADD/DROP DS3 interfaces to the Loop. The OPTI-3

operates in terminal mode only. The OCM may be

installed in a Rackmount Chassis (RMC),

P/N 1184003L1, or Wallmount Chassis (WMC),

P/N 1184001L1. Both chassis will accept either one

OCM for non-redundant operation or two OCMs for

redundant operation.

OC-3 Interface

Physical connection to the network is accomplished

via Dual SC receptacles on the OCM unit. Signal

specifications are as follows:

• Fiber Type: Single mode

• Wavelength: 1310 nm

• Optical Budget: 29 dB (minimum)

• Transmit Level: 0 dBm to –5 dBm

• Receive Level: –10 dBm to –34 dBm

Automatic Protection Switching

Automatic Protection Switching (APS) is available

when two OCMs are installed in the same OPTI-3

chassis and properly connected to redundant optical

devices at the other end of the loop. APS is a function

of the OCM that allows an automatic switch to the

offline OCM in the event of an optical signal failure

or degradation. Optical signal failure or degradation

may be caused by a variety of events, including, but

not limited to, optical cable damage, equipment

failure, power failure, or equipment being removed

from a shelf.

Signal degradation and signal failure thresholds may

be set and changed using the provisioning menu

provided by the OPTI-3, or by using SNMP or TL1

commands. Protection switching events are based on

the signal quality declining past either aforementioned

threshold. APS is non-revertive. The online

functionality of the secondary OCM will not switch to

the primary OCM upon improvement of the signal

quality for the primary OCM, but will only switch if

an event occurs which adversely affects the signal

quality detected by the secondary OCM. Additional

information concerning signal degradation thresholds

and signal failure thresholds is provided in the Menu

Structure section of this document.

If the OPTI-3 is configured to operate in a redundant

mode, the offline fiber is operable, APS is not

inhibited, the offline OC-3 equipment is working

properly on both ends of the circuit, and the offline

OCM is not in the Out of Service-Unassigned state, a

protection switch will occur within 60 ms of detecting

one or more of the following conditions:

1. OC-3 Loss of Signal

2. OC-3 Loss of Frame.

3. OC-3 Line AIS

4. OC-3 Signal Fail

5. OC-3 Signal Degrade

6. STS-1 Loss Of Pointer

7. STS-1 AIS

8. STS-1 Signal Label Mismatch

9. Equipment fault affecting the OCM

10. Removal of OC-3 equipment

The OPTI-3 can also be switched manually by an

operator via the front panel APS switch, menu access,

SNMP, or TL1 messages.

1 2 3 4 5 6 7 8 9 10 ... 75 76

Comentarios a estos manuales

Sin comentarios

ADTRAN T200 FNID Especificaciones Pagina 5

Comentarios a estos manuales

Relacionado con productos y manuales para Redes ADTRAN T200 FNID