Cisco 3521, Administrator'S Manual

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Administrator’s Guide for Cisco IPVC 3521 BRI Gateway, Cisco IPVC 3526 PRI Gateway, and Cisco IPVC 3540 PRI Gateway
OL-7995-01
Chapter 1 Overview of the Cisco IPVC 3500 Series Gateway
About Cisco IPVC 3500 Series Gateway Functionality
Figure 1-13 Connecting the PRI Gateway to a PBX that Provides a PRI Line
About Cisco IPVC 3500 Series Gateway Functionality
This section discusses the following topics:
•
About Call Handling Capacity, page 1-20
• About Cisco IPVC 3500 Series Gateway Call Bandwidth Overhead, page 1-21
•
About Peer-to-Peer Connectivity, page 1-21
About Call Handling Capacity
Table 1-9 lists the maximum call handling capacity of the Cisco IPVC 3521 BRI Gateway for 4 x BRI
lines, 8 voice-only calls, or 8 video calls, or any combination of the two.
Table 1-10 lists the maximum call handling capacity of the Cisco IPVC 3526 PRI Gateway and
Cisco IPVC 3540 PRI Gateway when using one or two E1 PRI lines, and one or two T1 PRI lines for
different types of calls.
92874
H.323
Terminal
IP phone
IP
IP phone
IP
IP phone
IP
IP
network
Public
Central office
switch
Private
Cisco IPVC
Gateway
Cisco IPVC
chassis/unit
PBX
PRI T1/E1
Table 1-9 Cisco IPVC 3521 BRI Gateway Call Handling Capacity
Number of Calls Capacity
1 384 Kbps+ or 412 Kbps
2 256 Kbps
4 128 Kbps
8 64 Kbps