Huawei ATN 950B - Working Principle and Signal Flow

Function and Feature Remarks
Supports the timeslot compression function. Provides the vacant
64 kbit/s timeslot suppression function for the CES services in the
CESoPSN mode to save the transmission bandwidth.
The jitter compensation buffer time of the CES service can be set.
The jitter buffer time ranges from 2 ms to 8 ms.
The packet loading time of the CES service can be set. The
encapsulation buffer time ranges from 1 ms to 3 ms.
ML-PPP Number of supported ML-PPP
groups
16
Maximum number of links
supported by each ML-PPP
group
16
b
Functions as the UNI interface to access IP packets of the L3VPN
services.
NOTE
a: In the case of the AND2MD1A/AND2MD1B, the links corresponding to the former 16 and latter 16 E1
ports cannot be bundled to an IMA group.
a: In the case of the AND2MD1A/AND2MD1B, the links corresponding to the former 16 and latter 16 E1
ports cannot be bundled to an ML-PPP group.
5.8.3 Working Principle and Signal Flow
The AND2MD1A/AND2MD1B mainly consists of the service access module, service
processing module, management module, clock module, and power supply module.
Figure 5-16 shows the functional block diagram of the AND2MD1A/AND2MD1B.
Figure 5-16 Functional block diagram of the AND2MD1A/AND2MD1B
Clock
module
Power
supply
module
Service access
module
Management
module
32 x E1 Service signal
Service
processing
module
Service signal
Backplane
3.3V
1V
.
.
.
.
.
.
-48V/-60V
-48V/-60V
Line clocks
Line clocks
System clocks
Management bus
Management bus
CXP
CXP
CXP
CXP
System power
supply
System power
supply
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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