Zte ZXA10 S300 Technical Manual page 22

ZXA10 S300 (V1.1) Integrated Access Service Dispatching Unit Technical Manual
10 Confidential and Proprietary Information of ZTE CORPORATION
Ensured transparence of Ethernet services, including the
transparent transmission of Ethernet MAC frames and
VLAN tags.
Implements the function of forwarding/filtering Ethernet
data frames,
protocol.
Provides two optional modes of self-learning and static
configuration to maintain the MAC address table.
Supports flow control, including backpressure flow control
in half-duplex mode and IEEE802.3x flow control (also
called PAUSE frame control) function in full duplex mode.
ATM service
The ATM subsystem implements transmission, statistics
multiplex, VP/VC switching and VP protection of the ATM PVC
service, as shown in Figure 5.
5 − A T M F
F
I G U R E U N C T I O N
For lots of access equipment, the uplink interfaces are ATM
interfaces. The ZXA10 S300 serves as a multi-service access
platform. Due to the location of THE ZXA10 S300 in the
telecom network, the ATM has following features:
Provides multi-layer reliability protection: Protection and
straight-through protection of the VPRING in the ATM
layer, the multiplex section in the SDH layer, or high-
order channel.
Guarantee the QOS and bandwidth for the service.
NM Functions
At the gateway Network Element (NE) (that is, the NE
connected to the NMS), the NE order wire control board
provides a 10 M/100 M Ethernet interface for connecting the
NMS server which provides Ethernet interface for managing
this NE. For the management of non-gateway NEs, the
massages transmitted from the NMS server to the gateway
NE are forwarded to the corresponding NEs by the network
management NE through ECC protocol stack. User defined
ECC protocol stack is adopted for the communication
between NEs. It includes four layers. At the physical layer,
which complies with
S D
C H E M A T I C I A G R A M
the IEEE802.1d