Cisco Systems 3522 BRI Functionality, About the Cisco Unified Videoconferencing 3527 PRI Gateway

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C H A P T E R 1

Functionality

This section describes the following topics:

About Cisco Unified Videoconferencing 3500 Gateway Products, page 1-1

About Gateway Features, page 1-2

About Cisco Unified Videoconferencing 3500 Gateway Applications and Topologies, page 1-6

About Cisco Unified Videoconferencing 3500 Gateway Functionality, page 1-10

About Cisco Unified Videoconferencing 3500 Gateway Products

The Cisco Unified Videoconferencing 3500 Gateway series consists of the following products:

Cisco Unified Videoconferencing 3527 PRI Gateway (see the “About the Cisco Unified Videoconferencing 3527 PRI Gateway”)

Cisco Unified Videoconferencing 3522 BRI Gateway (see the “About the Cisco Unified Videoconferencing 3522 BRI Gateway” section on page 1-1)

About the Cisco Unified Videoconferencing 3527 PRI Gateway

The Cisco Unified Videoconferencing 3527 PRI Gateway enables audio, video, and data communication between H.320 endpoints that connect through ISDN, and H.323 endpoints that connect through a packet-based network. For voice-over-IP, the gateway enables PSTN voice callers to connect from the ISDN network to IP voice callers. The Cisco Unified Videoconferencing 3527 PRI Gateway supports one PRI ISDN port.

About the Cisco Unified Videoconferencing 3522 BRI Gateway

The Cisco Unified Videoconferencing 3522 BRI Gateway enables audio, video and data communication between H.320 endpoints that connect through Integrated Services Digital Network (ISDN), and H.323 endpoints that connect through a packet-based network. For voice-over-IP, the gateway enables Public Switched Telephone Network (PSTN) voice callers to connect with IP voice callers. The Cisco Unified Videoconferencing 3522 BRI Gateway supports up to four BRI ISDN ports.

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

 

OL-14910-01

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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 About the Cisco Unified Videoconferencing 3527 PRI Gateway FunctionalityAbout the Cisco Unified Videoconferencing 3522 BRI Gateway Feature Description About Gateway FeaturesTCS4 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 Gateway IP Network Connections About Multipoint ConferencingAbout 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 HelpLaunching the Cisco Software Upgrade Utility Using the Cisco Software Upgrade UtilityIntroduction Upgrading Software Click Customize Snmp SettingsUnit RS-232 9-Pin Serial Port Cable Connections and Pin-outsPin Function Isdn Port RJ-45 8-Pin IP Network PortPush Buttons Technical SpecificationsTechnical Specifications Table LED IndicatorsMemory Power SupplyChipset Operating SystemPage OL-14910-01 Electrical Safety SafetyGrounding High Voltage ESD ProceduresWarnhinweise SicherheitElektrische Sicherheit ESD-VerfahrenAlta Tensión SeguridadSeguridad Electrica Puesta a TierraProcedimientos ESD Securite Electrique SecuriteMise 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 EMCPRI SvgaSnmp 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.