Huawei ATN 950B - Functions and Features

The ML1A has two function versions, that is, AND1 and AND2. Table 5-20 lists the differences
between these two versions.
Table 5-20 Differences between the two function versions of the ML1
Function Difference
AND1ML1/AND1ML1A AND2ML1A/
AND2ML1B
Matching impedance at an
interface
AND1ML1: 75 ohms
AND1ML1A: 120 ohms
AND2ML1A: 75 ohms
AND2ML1B: 120 ohms
ATM scheduling mode Scheduling by service type Scheduling by connection
Scheduling by CBR, UBR,
UBR+, rt-VBR, or nrt-VBR
connection
ML-PPP scheduling Scheduling with four
priorities
Scheduling with eight
priorities
Number of timeslots
supported by a 64k channel
2-31 1-31
5.6.2 Functions and Features
The AND1ML1 is a 75-ohm E1 board and the AND1ML1A is a 120-ohm E1 board. The
AND1ML1/ML1A can access a maximum of 16 x E1 signals, supports flexible configuration
of different services on each port, and is hot swappable.
Table 5-21 lists functions and features of the AND1ML1/AND1ML1A .
Table 5-21 Functions and features of the AND1ML1/AND1ML1A
Function and Feature
Remarks
Basic functions Accesses and processes 16 x E1 signals and supports the ATM
E1, IMA, CES, and ML-PPP protocols.
Supports the hot swappable function.
Interface functions Supports collection of bandwidth utilization statistics at an
IMA/ML-PPP port.
Fractional E1 Supports the CES services at 64 kbit/s level.
PRBS Supports the PRBS function in framed or unframed mode of
an E1 port in the receive/transmit direction.
ATM/IMA Number of supported IMA
groups
supported ATM E1 services
16
ATN 950B Multi-service Access Equipment
Hardware Description 5 Physical Interface Card
Issue 03 (2012-07-23) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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