Cisco 7971G - Manual (Page 2)

Chapter 3 Setting Up the Cisco Unified IP Phone
Before You Begin
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Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.0 (SIP), Cisco Unified IP Phones
OL-8182-01
Before You Begin
Before installing the Cisco Unified IP Phone, review the requirements in these
sections:
• Network Requirements, page 3-2
• Cisco Unified CallManager Configuration, page 3-2
• Safety, page 3-3
Network Requirements
For the Cisco Unified IP Phones 7970G/7971G-GE to successfully operate as a
Cisco Unified IP Phone endpoint in your network, your network must meet these
requirements:
• Working Voice over IP (VoIP) Network:
– VoIP configured on your Cisco routers and gateways
– Cisco Unified CallManager Release 5.x or higher installed in your
network and configured to handle call processing
• IP network that supports DHCP or manual assignment of IP address, gateway,
and subnet mask
Note The Cisco Unified IP Phone displays the date and time from Cisco Unified
CallManager. If the Cisco Unified CallManager server is located in a different
time zone than the phones, the phones will not display the correct local time.
Cisco Unified CallManager Configuration
The Cisco Unified IP Phone requires Cisco Unified CallManager to handle call
processing. Refer to Cisco Unified CallManager Administration Guide or
context-sensitive help in the Cisco Unified CallManager application to ensure
that Cisco Unified CallManager is set up properly to manage the phone and to
properly route and process calls.