Cisco Systems 3527 PRI Feature Cisco Unified, VGA, XGA, SVGA, SIF, 4SIF, CIF, QCIF, 4CIF, 16CIF

Models: 3527 PRI 3522 BRI

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Chapter 1 Functionality

About Gateway Features

Table 1-1

Gateway Feature Summary (continued)

 

 

 

 

 

 

 

Feature

 

Description

 

 

 

 

 

 

 

Peer-to-peer

 

The gateway supports connectivity to the IP network through a gatekeeper,

connectivity

 

or directly to a peer device such as Cisco Unified Communications

 

 

Manager.

 

 

 

 

 

 

 

IP network

 

The gateway has one 10/100Base-T Ethernet IP port (on the front panel)

connections

 

and connects to an IP segment through a direct connection to a network

 

 

switch.

 

 

 

 

 

 

Table 1-2lists features for specific Cisco gateways.

 

 

Table 1-2

Cisco Gateway Feature Specifics

 

 

 

 

 

 

Feature

 

Cisco Unified

Cisco Unified

 

 

Videoconferencing 3527 PRI Gateway

Videoconferencing 3522 BRI Gateway

 

 

 

 

Supported ports

 

1 PRI ISDN port

4 BRI ISDN ports

 

 

 

 

Supported video

H.320, H.323 (using Cisco Stack v4.0)

 

 

conferencing protocols

 

 

 

 

 

Supported audio

The term audio transcoded video calls refers to the process whereby an audio

codecs

 

stream in a multimedia call can be transcoded from one codec type to another.

 

 

Basic and advanced audio coding supported codecs: G.711, G.722, G.722.1,

 

 

G.723.1, G.728

 

 

 

 

 

Audio Transcoding

G.711 (ISDN) < > G.723.1 (IP) for up

G.711 (ISDN) < > G.723.1 (IP) for up

 

 

to 30 voice channels.

to 8 voice channels.

 

 

G.711 (IP) < > G.728 (ISDN) for up to

G.711 (IP) < > G.728 (ISDN) for up to

 

 

20 audio transcoded video channels.

8 audio transcoded video channels.

 

 

The gateway automatically performs

 

 

 

 

A-Law G.711-to-µ-Law G.711

 

 

 

 

translation between the IP and ISDN

 

 

 

 

sides if needed.

 

 

 

 

Note When your Cisco unit

 

 

 

 

includes both a gateway and a

 

 

 

 

MCU, G.728 transcoding is

 

 

 

 

supported on the MCU only.

 

 

 

 

 

Supported video

H.261, H.263, H.263+ (Annexes F, J and N), H.263++ (Annex W), H.264

protocols

 

 

 

 

 

 

Supported video

VGA, XGA, SVGA, SIF, 4SIF, CIF, QCIF, 4CIF, 16CIF

resolutions

 

 

 

 

 

 

 

Supported bandwidths

56, 64, 112, 128, 168, 192, 224, 256,

56, 64, 112, 128, 224, 256, 336, 384

(Kbps)

 

280, 320, 336, 384, 448, 512, 672,

and 512

 

 

768, 1288, 1472, 1680 and 1920

 

 

 

 

 

 

 

 

Note Bandwidth rates of 256 Kbps and up support the G.722 audio codec.

 

 

 

 

 

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

1-4

OL-14910-01

 

 

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Cisco Systems 3527 PRI, 3522 BRI manual Feature Cisco Unified, VGA, XGA, SVGA, SIF, 4SIF, CIF, QCIF, 4CIF, 16CIF

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.