Cisco 7940G Panduan Administrator - Halaman 12

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Cisco SIP IP Phone Connections

•

Note

Only the network port (labeled 10/100 SW) supports inline power from the Catalyst switches.

For redundancy, you can use the Cisco AC adapter even if you are using inline power from the Catalyst

switches. The Cisco SIP IP phone can share the power load being used from the inline power and external

power source. If either the inline power or the external power goes down, the phone can switch entirely

to the other power source.

To use this redundancy feature you must set the inline power mode to auto on the Cisco Catalyst switch.

Next, connect the unpowered Cisco SIP IP phone to the network. After the phone powers up, connect the

external power supply to the phone.

Using a Headset

The Cisco SIP IP phone supports a four- or six-wire headset jack. Specifically, the Cisco SIP IP phone

supports the following Plantronics headset models:

•

The volume and mute controls also adjust volume to the earpiece and mute the speech path of the

headset. The headset activation key is located on the front of the Cisco SIP IP phone.

When using a headset, an amplifier is not required. However, a coil cord is required to connect the

Note

headset to the headset port on the back of your Cisco IP Phone 7960/7940. For information on ordering

compatible headsets and coil cords for the Cisco IP Phone 7960/7460, go to the following URL:

http://cisco.getheadsets.com

Cisco SIP IP Phone Administrator Guide Version 3.0

1-12

WS-X6348-RJ45V 10/100 switching module—Provides inline power to the Cisco SIP IP phone

when connected to a Catalyst 3500, 4000, or 6000 family 10/100BASE-TX switching module.

This module sends power on pins 1 and 2, and 3 and 6.

WS-PWR-PANEL—Power patch panel provides power to the Cisco SIP IP phone, which allows the

Cisco SIP IP phone to be connected to existing Catalyst 4000, 5000, and 6000 family

10/100BASE-TX switching modules.

This module sends power on pins 4, 5, 7, and 8.

WS-X4148-RJ45V—48-port 10/100 Ethernet with inline power module for the Catalyst 4006.

WS-X4095-PEM—VoIP DC Power Entry module for the Catalyst 4006.

WS-X4608-2PSU and WS-X4608—External -48V DC power shelf common equipment for the

Catalyst 4006 with two AC-to-DC power supply units (PSUs) and one empty bay for redundant

option, and the 110V 15A AC-to-48V DC PSU redundant option for the power shelf.

WS-C3524-PWR-XL-EN—Catalyst 3524-PWR XL switch.

Tristar Monaural

Encore Monaural H91

Encore Binaural H101

http://vxicorp.com/cisco

Chapter 1

Product Overview

OL-2206-01