Cisco 7941G - Unified IP Phone VoIP Administratiehandleiding - Pagina 2

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Cisco Unified IP Phone and Cisco Unified Communications Manager Interactions

Cisco Unified IP Phone and Cisco Unified Communications Manager

Interactions

Cisco Unified Communications Manager is an open and industry-standard call processing system.

Cisco Unified Communications Manager software sets up and tears down calls between phones, integrating

traditional PBX functionality with the corporate IP network. Cisco Unified Communications Manager manages

the components of the IP telephony system—the phones, the access gateways, and the resources necessary

for features such as call conferencing and route planning. Cisco Unified Communications Manager also

provides:

• Firmware for phones

• Authentication and encryption (if configured for the telephony system)

• Configuration, certificate trust list (CTL), and Identity Trust List (ITL) files via the TFTP service

• Phone registration

• Call preservation, so that a media session continues if signaling is lost between the primary

For information about configuring Cisco Unified Communications Manager to work with the IP devices

described in this chapter, see the Cisco Unified Communications Manager Administration Guide, Cisco Unified

Communications Manager System Guide, and Cisco Unified Communications Manager Security Guide.

If the Cisco Unified IP Phone model that you want to configure does not appear in the Phone Type

Note

drop-down list in Cisco Unified Communications Manager Administration, go to the following URL and

install the latest support patch for your version of Cisco Unified Communications Manager:

www.cisco.com/kobayashi/sw-center/sw-voice.shtml

Cisco Unified IP Phones and VLAN Interaction

The Cisco Unified IP Phones have an internal Ethernet switch, enabling forwarding of packets to the phone,

and to the access port and the network port on the back of the phone.

If a computer is connected to the access port, the computer and the phone share the same physical link to the

switch and share the same port on the switch. This shared physical link has the following implications for the

VLAN configuration on the network:

• The current VLANs might be configured on an IP subnet basis. However, additional IP addresses might

• Data traffic present on the VLAN supporting phones might reduce the quality of VoIP traffic.

• Network security may need to isolate the VLAN voice traffic from the VLAN data traffic.

Cisco Unified IP Phone 7941G, 7941G-GE, 7942G, 7961G, 7961G-GE, and 7962G Administration Guide for Cisco

Unified Communications Manager 9.0 (SCCP and SIP)

Communications Manager and a phone

not be available to assign the phone to the same subnet as other devices connected to the same port.

Cisco Unified IP Phones and Your Network

http://