Enterprise Pra Pbx Private Line Access Service; Service Requirement And Application Scenario - Huawei SmartAX MA5603T Configuration Manual

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide

13.3.4 Enterprise PRA PBX Private Line Access Service

ONUs provide PRA E1 ports to access PRA private branch exchange (PBX) services of an
enterprise and transmit them to an OLT. Then, the OLT forwards the service data upstream to
the packet switched network (PSN). This achieves voice-to-IP conversion, simplifying the
network architecture.

13.3.4.1 Service Requirement and Application Scenario

Service Requirement
PRA PBX is a telephone exchange used in an enterprise. With the PRA PBX, staff in the
enterprise can use internal telephones to make free calls by dialing short numbers. Outgoing
calls are made through a unified trunk. After the PRA PBX service is accessed in PON mode
using "OLT+ONU", VoIP calls can be made. Compared with services provided by the PRA
PBX itself, the VoIP service has following advantages:
l
l
l
l
In addition, the operation method for end users connected to the PRA PBX is not changed.
Application Scenario
As shown in
transmits the data to the upper NGN/IMS, achieving the VoIP-based PRA voice service.
Applicable ONU: MA5612, MA5616.
Figure 13-12 Networking diagram of the PRA PBX access service
Issue 01 (2014-04-30)
Outgoing call data is carried over IP, which greatly lowers communication costs for
enterprises and retains good call quality.
No extra investment is required because the voice service is deployed directly using the
PRA PBX.
Free calls can be made between branches in different regions.
More value-added services can be provided based on IP networks.
Figure 13-12, ONUs access PRA PBX services through E1 lines. The OLT
PRA PBX
ONU
ONU
PRA PBX
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13 FTTO Configuration (Large-sized Enterprise Access)
OLT
GE/10GE
Splitter
IP network
NGN/IMS
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