Cisco 7975G Installation Guide

Disable Speakerphone
To disable the speakerphone using Cisco Unified CM Administration, perform the following procedure:
Procedure
Step 1
Choose Device > Phone and locate the phone you want to modify.
Step 2
In the Phone Configuration window, check Disable Speakerphone.
Step 3
Click Apply.
Headset
Although Cisco performs internal tests of third-party headsets for use with the Cisco Unified IP Phones, Cisco
does not certify or support products from headset or handset vendors.
We recommend the use of good quality external devices, for example, headsets that are screened against
unwanted radio frequency (RF) and audio frequency (AF) signals. Depending on the quality of headsets and
their proximity to other devices, such as mobile phones and two-way radios, some audio noise or echo may
still occur. An audible hum or buzz may be heard by either the remote party of by both the remote party and
the Cisco Unified IP Phone user. A range of outside sources can cause humming or buzzing sounds; for
example, electric lights, electric motors, or large PC monitors. For more information, see External Device
Use, on page 6.
In some cases, use of a local power cube or power injector may reduce or eliminate hum.Note
These environmental and hardware inconsistencies in the locations where Cisco Unified IP Phones are deployed
mean that no single headset solution is optimal for all environments.
We recommend that customers test headsets in their intended environment to determine performance prior to
purchase and large-scale deployment.
The Cisco Unified IP Phone 7975G, 7971G-GE, 7970G, 7965G, and 7945G supports wideband headsets.Note
Audio Quality
Beyond physical, mechanical, and technical performance, the audio portion of a headset must sound good to
the user and the party on the far end. Sound quality is subjective and Cisco cannot guarantee the performance
of any headsets or handsets. However, a variety headsets from leading headset manufacturers have been
reported to perform well with Cisco Unified IP Phones.
For additional information, see the Headsets for Cisco Unified IP Phones and Desktop Clients page on
Cisco.com.
Cisco Unified IP Phone 7975G, 7971G-GE, 7970G, 7965G, and 7945G Administration Guide for Cisco Unified
Communications Manager 9.0 (SCCP and SIP)
4
Cisco Unified IP Phones Installation
Headset

Cisco 7975G Specifications

General

Handset type	Wired handset
Product type	IP Phone
Product color	Grey, Silver
Speakerphone	Yes
Voice codecs	G.711Mu, G.711a, G.722, G.729A, iLBC
Number of melodies	24
Aspect ratio	4:3
Display diagonal	5.6 \
Display resolution	320 x 240 pixels
Lines quantity	8 lines
Phonebook capacity	- entries
Number of VoIP accounts	-
Front camera	No
Security algorithms	128-bit AES
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	DHCP, TFTP
Volume control	Digital
Headphone outputs	1
Ethernet LAN (RJ-45) ports	2
Number of handles included	1 pc(s)
AC adapter output voltage	48 V
Storage temperature (T-T)	-10 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Certification	FCC

Weight and Dimensions

Depth	152.4 mm
Width	266.7 mm
Height	203.2 mm
Weight	1600 g