Basic Services And Equipment; Special Requirements For Voice Deployments; Bandwidth For Voice Deployments - Cisco WRP500 Administration Manual

Chapter 1 Product Overview and Deployment Guidelines
R E V I E W D R A F T # 1 — C I S C O C O N F I D E N T I A L
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Basic Services and Equipment

The following basic services and equipment are required:
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Special Requirements for Voice Deployments

Voice deployments have special requirements that you must meet to ensure voice quality.
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Bandwidth for Voice Deployments

You can choose from several types of broadband access technologies to provide symmetric or
asymmetric connectivity to a small business. These technologies vary on the available bandwidth and on
the quality of service. For voice deployments, it is generally recommended that you use broadband
access with a Service Level Agreement that provides quality of service. If there is not a Service Level
Agreement with regard to the broadband connection quality of service, the downstream audio quality
may be affected negatively under heavy load conditions (bandwidth utilization beyond 80%).
To eliminate or minimize this effect, Cisco recommends one of the following actions:
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Some analog telephones require AC power.
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Ethernet cabling: If an Internet access device is present, you will need to connect it to the
WRP500 with an Ethernet cable. You also will need Ethernet cable for any devices that do not
have wireless connectivity. It is recommended that Ethernet cables are UTP Cat5e or better.
PSTN lines: Ensure that the lines are operative and that any features, such as caller
identification, operate properly before starting the installation.
UPS: It is strongly recommended that you included an Uninterrupted Power Supply (UPS)
mechanism in your network to ensure continuous operation during a power failure. Connect all
essential devices, including the Internet access device, WRP500, and the Ethernet switch (if
present).
An Integrated access device or modem for broadband access to the Internet
Business grade Internet service
Internet Telephony Service Provider (ITSP) for Voice Over IP telephone service, supporting a
"bring your own device" model
A computer with Microsoft Windows XP or Windows Vista for system configuration
"Bandwidth for Voice Deployments," on page 7
"NAT Mapping for Voice over IP Deployments," on page 9
"Local Area Network Design for Voice Deployments," on page 9
For broadband connections with a bandwidth lower than 2 Mbps, perform the call capacity
calculations by assuming a bandwidth value of 50% of the existing broadband bandwidth. For
Special Requirements for Voice Deployments
Cisco WRP500 Administration Guide
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