Common Deployment Scenarios; Understanding The Functions Of The Srx210 Services Gateway With Integrated Convergence Services - Juniper SRX210 - HARDWARE GUIDE REV 3 Hardware Manual

Common Deployment Scenarios

Related
Documentation
Understanding the Functions of the SRX210 Services Gateway with Integrated
Convergence Services
Copyright © 2010, Juniper Networks, Inc.
Chapter 5: SRX210 Services Gateway with Integrated Convergence Services
The SRX210 Services Gateway with Integrated Convergence Services is deployed in
following environments:
Enterprises that deploy VoIP in their headquarters and want to enable VoIP functionality
for their branch offices
Enterprises that use hosted VoIP services from service providers (SPs) in order to
enable VoIP functionality for their branch offices
Branch sites currently using a local key system or PBX that want to utilize SIP trunking
services
Understanding the Functions of the SRX210 Services Gateway with Integrated
Convergence Services on page 41
SRX210 Services Gateway Integrated Convergence Services Interoperability on page 42
Configuring the SRX210 Services Gateway with Integrated Convergence Services on
page 43
SRX210 Services Gateway with Integrated Convergence Services Front Panel and Back
Panel Views on page 12
SRX210 Services Gateway with Integrated Convergence Services functions as follows:
IP phones are either directly connected to a PoE port on the SRX210 Services Gateway
with Integrated Convergence Services, or they are connected to a separate switch with
PoE.
SIP trunks connect to the SRX210 Services Gateway with Integrated Convergence
Services over WAN interfaces (usually with T1 or Ethernet ports).
Analog telephones and fax machines are directly connected to the SRX210 Services
Gateway with Integrated Convergence Services through Foreign Exchange Station
(FXS) interfaces.
The telephone exchange or PSTN central office is directly connected to the SRX210
Services Gateway with Integrated Convergence Services through Foreign Exchange
Office (FXO) interfaces.
The media gateway converts analog signals from FXS and FXO ports and digital TDM
signals from T1/E1 ports to VoIP packets and sends them to the network after processing
through Junos OS secure routing and firewall flows. Similarly, the media gateway
receives forwarded VoIP packets from the network, converts them into analog signals
or digital TDM signals, and sends them across the appropriate interface.
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