For the Cisco Unified SIP Phone 3911 to successfully operate as a Cisco Unified IP Phone endpoint in your network, your network must meet the following requirements:
- Working Voice over IP (VoIP) Network:
– VoIP configured on your Cisco routers and gateways
– Cisco Unified Communications Manager 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
The Cisco Unified IP Phone displays the date and time from Cisco Unified Communications Manager. If the Cisco Unified Communications Manager server is located in a different time zone than the phones, the phones will not display the correct local time.
Cisco Unified Communications Manager Configuration
The Cisco Unified IP Phone requires Cisco Unified Communications Manager to handle call processing. Refer to Cisco Unified Communications Manager Administration Guide or context-sensitive help in the Cisco Unified Communications Manager application to ensure that Cisco Unified Communications Manager is set up properly to manage the phone and to properly route and process calls.
If you plan to use auto-registration, verify that it is enabled and properly configured in Cisco Unified Communications Manager before connecting any Cisco Unified IP Phone to the network. See the “Adding Phones to the Cisco Unified Communications Manager Database” section for details.
You must use Cisco Unified Communications Manager to configure and assign telephony features to the Cisco Unified IP Phones. See the “Telephony Features Available for the Cisco Unified IP Phone” section for details.
In Cisco Unified Communications Manager, you can add users to the database and associate them with specific phones. See the “Adding Users to Cisco Unified Communications Manager” section for details.
Review the following warnings before installing the Cisco Unified IP Phone. To see translations of these warnings, refer to the Regulatory Compliance and Safety Information for the Cisco Unified IP Phone document that accompanied this device.
Warning Read the installation instructions before you connect the system to its power source.
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning Ultimate disposal of this product should be handled according to all national laws and regulations.
Warning Do not work on the system or connect or disconnect cables during periods of lightning activity.
Warning Installation of the equipment must comply with local and national electrical codes
Warning The power supply must be placed indoors.
Warning To avoid electric shock, do not connect safety extra low voltage (SELV) circuits to telephone network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.
Inline power circuits provide current over the cable. Use the Cisco provided cable or a minimum 24 AWG communication cable.
The following warnings apply when you use an external power supply.
Only use the proper Cisco approved external power supply. Reference the installation manual provided with the phone.
Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15 A U.S. (240 VAC, 10 A international) is used on the phase conductors (all current-carrying conductors).
Warning The device is designed to work with TN power systems.
Warning The plug-socket combination must be accessible at all times because it serves as the main disconnecting device. #331