Cisco Systems 3522 BRI, 3527 PRI manual PRI Gateways

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Chapter 1 Functionality

About Cisco Unified Videoconferencing 3500 Gateway Applications and Topologies

The Cisco PRI gateway features configurable E1/T1 PRI ISDN connections. When configured as an E1 connection, each port provides 30 B channels and one D signaling channel. When configured as a T1 connection, each port provides 23 B channels and one D signaling channel. The type of line available depends on your local ISDN provider. You configure the gateway PRI port to an E1 or T1 interface accordingly. In addition, you can choose to activate only specific channels by using fractional channel selection.

PRI Gateways

You can connect the PRI gateway directly to a PRI line provided by your local ISDN provider (as shown in Figure 1-4), or to a local private branch exchange (PBX) that provides the PRI connection (as shown in Figure 1-5).

Figure 1-4 Connecting the PRI Gateway Directly to a Central Office Switch

 

Private

Public

IP

 

 

network

Cisco IPVC

 

 

 

 

chassis/unit

 

H.323

 

PRI T1/E1

 

 

Terminal

 

Central office

 

Cisco IPVC

 

switch

 

Gateway

 

IP

 

92873

IP phone

 

 

 

Figure 1-5 Connecting the PRI Gateway to a PBX that Provides a PRI Line

Private Public

H.323 terminal

IP phone

IP

IP network

Cisco chassis/unit

PRI T1/E1

 

Cisco Gateway

PBX

 

Central Office

switch

157167

Installation and Upgrade Guide for Cisco Unified Videoconferencing 3522 BRI Gateway and 3527 PRI Gateway Release 5.5

 

OL-14910-01

1-9

 

 

 

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Contents Customer Order Number Text Part Number OL-14910-01 Americas HeadquartersPage N T E N T S Safety EMC OL-14910-01 Functionality About the Cisco Unified Videoconferencing 3527 PRI GatewayAbout the Cisco Unified Videoconferencing 3522 BRI Gateway About Gateway Features Feature DescriptionTCS4 Functionality VGA, XGA, SVGA, SIF, 4SIF, CIF, QCIF, 4CIF, 16CIF Feature Cisco UnifiedFeature Cisco Unified About Multimedia Conferencing Multimedia Conferencing through the Gateway About Point-to-Point ConferencingAbout Multipoint Conferencing About Gateway IP Network ConnectionsAbout Gateway Isdn Network Connections PRI Gateways BRI Gateways Capacity About PRI Gateway Call Handling CapacityAbout BRI Gateway Call handling Capacity About Gateway Call Bandwidth OverheadAbout Peer-to-Peer Connectivity Resource Allocation across E1/T1 LinesFront Panel Physical DescriptionCD LED Alarm LEDCisco Unified Videoconferencing 3527 PRI Gateway Rear Panel Component DescriptionCisco Unified Videoconferencing 3522 BRI Gateway RTM Alarm LEDCall Appearances EktsVerifying the Package Contents Fitting a Bracket for Rack Mounting Requirements Connecting to a PCSetting the IP Address Before You BeginTo change the configuration software password Changing the Configuration Tool Login Password Local Port Monitoring Connections Snmp ManagementSvga Port Performing Software UpgradesNetscape Navigator Users Registering the Online HelpUsing the Cisco Software Upgrade Utility Launching the Cisco Software Upgrade UtilityIntroduction Upgrading Software Click Customize Snmp SettingsCable Connections and Pin-outs Unit RS-232 9-Pin Serial PortPin Function Isdn Port RJ-45 8-Pin IP Network PortPush Buttons Technical SpecificationsTechnical Specifications Table LED IndicatorsMemory Power SupplyChipset Operating SystemPage OL-14910-01 Safety Electrical SafetyGrounding High Voltage ESD ProceduresWarnhinweise SicherheitElektrische Sicherheit ESD-VerfahrenAlta Tensión SeguridadSeguridad Electrica Puesta a TierraProcedimientos ESD Securite Securite ElectriqueMise a la Terre Haute Tension Prevention des Decharges ElectrostatiquesChapter Compliance and Certifications Safety ComplianceCE CTR3, CE CTR4 TelecomFCC Part 15 Notice CISPR24Industry Canada Acta Part 68 NoticeEnvironmental Compliance EMC BRIIsdn EMCSvga PRISnmp IN-4
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3527 PRI, 3522 BRI specifications

Cisco Systems has long been a leader in networking and telecommunications equipment, and its BRI (Basic Rate Interface) and PRI (Primary Rate Interface) products are essential components in enabling businesses to manage voice and data communications efficiently. Notable models such as the Cisco 3522 BRI and 3527 PRI have earned recognition for their robust performance and versatile features.

The Cisco 3522 BRI is designed to deliver high-quality voice and data services over ISDN (Integrated Services Digital Network) connections. With two B channels for voice or data transmission, each supporting up to 64 Kbps, this device is ideal for small to medium-sized businesses that require reliable communication solutions while maintaining cost-effectiveness. The Cisco 3522 BRI supports multiple protocols, making it a flexible choice to adapt to various network environments.

On the other hand, the Cisco 3527 PRI supports up to 30 B channels, thereby significantly increasing the capacity for voice calls and data transfer. This scalability makes the 3527 PRI suitable for larger organizations that demand higher throughput and call handling capability. It operates over T1 and E1 lines, allowing businesses to leverage existing infrastructure while improving operational efficiencies. Additionally, the 3527's advanced features, such as call processing and load balancing, contribute to a seamless communication experience.

Both devices support a range of technologies that enhance functionality and performance. They are equipped with Call Admission Control (CAC) to optimize bandwidth use and reduce congestion during peak traffic. Cisco's VoIP technology, including features such as voice provisioning, fax over IP, and QoS (Quality of Service) mechanisms, ensures voice clarity and reliability.

Security is paramount, and both the 3522 and 3527 incorporate various protocols such as SRTP (Secure Real-Time Transport Protocol) to protect voice communications against unauthorized access. Furthermore, integration with Cisco's unified communications offerings allows for a more cohesive communication strategy, ensuring that users can take advantage of collaboration tools and data services.

In conclusion, the Cisco 3522 BRI and 3527 PRI models stand out with their impressive feature sets and technologies, making them an excellent investment for businesses needing reliable, scalable, and secure voice and data communication solutions. Choosing Cisco means embracing a future-proof solution that can grow with your organization's communication needs.