Cisco 7931G Manual

Security Restrictions
A user cannot barge into an encrypted call if the phone that is used to barge is not configured for encryption.
When barge fails in this case, a reorder (fast busy) tone plays on the phone of the barge initiator.
If the initiator phone is configured for encryption, the barge initiator can barge into an authenticated or
nonsecure call from the encrypted phone. After the barge occurs, Cisco Unified Communications Manager
classifies the call as nonsecure.
If the initiator phone is configured for encryption, the barge initiator can barge into an encrypted call, and the
phone indicates that the call is encrypted.
A user can barge into an authenticated call, even if the phone that is used to barge is nonsecure. The
authentication icon continues to appear on the authenticated devices in the call, even if the initiator phone
does not support security.
Phone Power Consumption
The Cisco Unified IP Phone 7900 Series supports Cisco EnergyWise. EnergyWise is also known as Power
Save Plus. When your network contains an EnergyWise controller, you can configure these phones to sleep
(power down) and wake (power up) on a schedule to reduce your power consumption. The phone should be
powered by the Power Over Ethernet (PoE) port of the switch instead of the power adapter.
You set up each phone to enable or disable the EnergyWise settings. You can also configure EnergyWise
parameters on the enterprise and common phone configuration. If EnergyWise is enabled, you configure a
sleep and wake time, as well as other parameters. These parameters are sent to the phone as part of the phone
configuration XML file.
The switch administrator can wake the phone up before the scheduled time. For more information on powering
up the phones from the switch, see the switch documentation.
Cisco Unified IP Phone Deployment
When deploying a new IP telephony system, system administrators and network administrators must complete
several initial configuration tasks to prepare the network for IP telephony service. For information and a
checklist for setting up and configuring a complete Cisco IP telephony network, see the Cisco Unified
Communications Manager System Guide, “System Configuration Overview” chapter.
After you have set up the IP telephony system and configured system-wide features in
Cisco Unified Communications Manager, you can add the Cisco Unified IP Phone to the system.
The following topics provide an overview of procedures for adding Cisco Unified IP Phones to your network.
Cisco Unified IP Phone Setup in Cisco Unified Communications Manager
To add phones to the Cisco Unified Communications Manager database, you can use:
•
Autoregistration
•
Cisco Unified Communications Manager Administration
•
Bulk Administration Tool (BAT)
Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 9.0 (SCCP and SIP)
23
Cisco Unified IP Phone 7931G
Security Restrictions

Cisco 7931G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Electromagnetic compatibility	FCC Part 15 (CFR 47) Class B, ICES-003 Class B, EN55022 Class B, CISPR22 Class B, AS/NZS CISPR 22 Class B, CISPR 24, VCCI Class B, EN55024, EN 50082-1, EN 61000-3-2, EN 61000-3-3, EN 61000-6-1
Wi-Fi	No
Networking standards	IEEE 802.1Q, IEEE 802.1af, IEEE 802.1p
Ethernet LAN interface type	Fast Ethernet
Supported network protocols	DHCP, TFTP, CDP
Lines quantity	24 lines
Phonebook capacity	- entries
Number of VoIP accounts	-
Voice codecs	G.711a, G.729A, G.729B, G.729ab
Volume control	Digital
Display resolution	192 x 64 pixels
Display number of lines	3 lines
Display number of colors	Monochrome
Storage temperature (T-T)	-10 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Safety	(UL) 60950, (CSA) C22.2 No. 60950, EN 60950, IEC 60950, AS/NZS60950, TS 001
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	229 mm
Width	203 mm
Height	178 mm
Weight	1360 g