ADTRAN Quad T1 IMA Spezifikationen PDF herunterladen (Seite 2)

2 61181409L10-5B

• VT100 terminal menu interface for configuration,

provisioning, status, test, and performance

monitoring.

• Communicates with SCU for management

functions.

• Supports download of new software via SCU.

• Provides 8 kHz system timing reference from any

one of the four DS1/E1 receive clocks.

2. INSTALLATION

C A U T I O N

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

Electronic modules can be damaged by static

electrical discharge. While handling this equipment,

wear an antistatic discharge wrist strap to prevent

damage to electronic components. Place modules in

antistatic packing material when transporting or

storing.

After unpacking the unit, inspect it for damage. If

damage is noted, file a claim with the carrier, and then

contact ADTRAN. See Warranty and Customer

Service.

The Quad T1/E1 IMA Module plugs directly into the

Total Access 3000 (23-inch) or the Total Access 3010

(19-inch) shelf. Both are rack-mounted chassis with

28 access slots for the Total Access 3000 and 22

access slots for the Total Access 3010. Both chassis

provide two CSM slots and a system controller slot.

Each access module contains the interfaces and the

appropriate circuitry to interface with the local loop.

No installation wiring is required for the Quad T1/E1

IMA Module.

NOTE

To avoid confusion with the Access and CSM

slots, the Access slots start with the fourth slot

from the left of the shelf and are numbered “1”

through “28” for the Total Access 3000 and “1”

through “22” for the Total Access 3010 on the

underlying silkscreen. Attempting to insert the

IMA Module in either the SCU or CSM slots

may damage the module and/or the backplane.

Pull the ejector on the bottom of the IMA Module

front panel from its closed position.

The IMA Module occupies one access slot. Gently

but firmly push the IMA Module into the proper slot.

Simultaneous thumb pressure at the top (above the

Power LED) and bottom of the module will ensure a

good seat of the pins into the backplane connector.

Push the ejector up and closed against the module

front panel.

Compliance

Table 1 shows the Compliance Codes for the Quad

IMA Module. This product complies with the

requirements covered under UL 60950. The Quad T1/

E1 IMA is intended for installation in type “B” or “E”

enclosures in Restricted Access Only areas. The Total

Access 3000/3010 shelf frame ground terminal must

be connected to an earth ground to ensure that the

front panel of the IMA Module is properly grounded

via the backplane connector.

3. OPERATION

The Quad T1/E1 IMA works only when combined

with a Cell Switch Module (CSM). The Quad T1/E1

IMA Access Module provides four T1/E1 IMA ports.

Each of these four T1/E1s may be placed in one of

four available IMA groups. Each IMA Group can

accommodate up to four T1/E1s and may be provided

to an individual IMA device in the ATM network.

When a T1/E1 is placed in a specific IMA Group, it

works together with the other T1/E1s in that group to

provide a virtual pipeline with a bandwidth equal to

the sum of all the T1/E1s in that Group. If a Group is

provisioned with multiple T1/E1s, and one T1/E1 is

lost, the Group continues to function with the

bandwidth available from the remaining T1/E1s.

An IMA Group can be used to provide network

connectivity to either an upstream or downstream

Network device. All traffic transferred by the IMA

module is processed by the Cell Switch Module that is

installed in the Total Access 3000/3010 chassis. It is

then sent to the proper interface (according to the

address in the ATM header) for delivery to the next

device.

Code Input Output

Power Code (PC) F C

Telecommunication Code (TC) – X

Installation Code (IC) A –

Table 1. Compliance Codes

1 2 3 4 5 6 7 ... 11 12

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