Chapter 5 Technical Specifications

Table 5-1

Cisco Unified Videoconferencing 3500 Gateway Unit Technical Specifications (continued)

 

 

Rear panel (Cisco Unified

1 x ISDN E1/T1 PRI port:

Videoconferencing 3527 PRI Gateway)

 

T1 mode

 

 

 

 

 

 

Channels: 23B + 1D

 

 

 

Clock rate: 1.544 Mbps

 

 

 

Framing: ESF or D4

 

 

 

Encoding: B8ZS or AMI

 

 

 

Line impedance: 100Ω

 

 

 

E1 mode

 

 

 

Channels: 30B + 1D

 

 

 

Clock rate: 2.048 Mbps

 

 

 

Framing: G.704 with CRC4

 

 

 

Encoding: HDB3 or AMI

 

 

 

Line impedance: 120Ω

Rear panel (Cisco Unified

4 x ISDN BRI ports

Videoconferencing 3522 BRI Gateway)

 

 

Chipset

 

PowerPC MPC755 32-bit RISC microprocessor running at 400MHz or

 

 

 

more

 

 

MPC8260 secondary microprocessor running at 200/133MHz or more

 

 

 

Operating System

RTOS, VxWorks 5.4

 

 

 

Memory

 

32 MB on-board flash memory for field upgrades, supports up to 64 MB

 

 

1 MB L-2 Cache at 200 MHz or more

 

 

128 MB SDRAM, supports up to 256 MB

 

 

 

Failsafe

 

Watchdog timer built in

 

 

 

 

Power Supply

 

Input 100-240VAC autoswitched

 

 

Output + 3.3VDC, + 5VDC, + 12VDC

 

 

Maximum power load 150W

 

 

 

 

Installation and Upgrade Guide for Cisco Unified Videoconferencing 3522 BRI Gateway and 3527 PRI Gateway Release 5.6

5-2

OL-17010-01

 

 

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Cisco Systems 3522 BRI manual Chipset, Operating System, Memory, Failsafe, Power Supply

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.