Cisco 7941G - Unified IP Phone VoIP Instruction Manual

Cisco Unified IP Phones Installation
•Phone Installation Overview, page 1
•Before You Begin, page 1
•Cisco Unified IP Phone Components, page 2
•Install Cisco Unified IP Phones, page 6
•Cisco Unified IP Phone Expansion Module, page 8
•Footstand Adjustment, page 11
•Phone Cable Lock, page 11
•Phone Startup Process Verification, page 14
•Network Settings, page 15
•Cisco Unified IP Phone Security, page 15
Phone Installation Overview
This chapter helps you install the Cisco Unified IP Phones on an IP telephony network.
Before you install a Cisco Unified IP Phone, you must decide how to configure the phone in your network.
Then you can install the phone and verify its functionality. For more information, see Cisco Unified IP
Phones and Your Network.
Note
Before You Begin
Before installing the Cisco Unified IP Phone, review the requirements in this section.
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Network Requirements
For the Cisco Unified IP Phone to successfully operate as a Cisco Unified IP Phone endpoint in your network,
your network must meet these requirements:
•Working VoIP network:
◦VoIP configured on your Cisco routers and gateways
◦Cisco Unified Communications Manager 4.x and later 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.
The time displayed on the phone can differ from the Cisco Unified Communications Manager time by up
to 10 seconds. The Cisco Unified Communications Manager server does not display the local time if it is
located in a different time zone than the phones.
Note
Cisco Unified Communications Manager Setup
The Cisco Unified IP Phone requires Cisco Unified Communications Manager to handle call processing. See
Cisco Unified Communications Manager Administration Guide or to 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 autoregistration, verify that it is enabled and properly configured in Cisco Unified
Communications Manager before connecting any Cisco Unified IP Phone to the network. For information
about enabling and configuring autoregistration, see Cisco Unified Communications Manager Administration
Guide.
You must use Cisco Unified Communications Manager to configure and assign telephony features to the
Cisco Unified IP Phones.
In Cisco Unified Communications Manager, you can add users to the database and associate them with specific
phones. In this way, users gain access to web pages that allow them to configure items such as call forward,
speed dial, and voice message system options.
Related Topics
Cisco Unified Communications Manager Phone Addition Methods
Telephony Features Available for Cisco Unified IP Phone
Cisco Unified Communications Manager User Addition
Cisco Unified IP Phone Components
The Cisco Unified IP Phones include these components on the phone or as accessories for the phone.
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Cisco Unified IP Phones Installation
Network Requirements

Network and Access Ports
The back of the Cisco Unified IP Phones includes these ports:
•Network Port
◦Labeled 10/100 SW on the 7962G, 7942G, 7961G, and 7941G
◦Labeled 10/100/1000 SW on the 7961G-GE and 7941G-GE
•For the Cisco Unified IP Phones 7962G and 7942G, you can use either Category 3/5/5e cabling for
10-Mbps connections, but you must use Category 5 or 5e for 100 Mbps connections.
•For the Cisco Unified IP Phones 7961G, 7961G-GE, 7941G, and 7941G-GE, you can use either Category
3 or 5 cabling for 10-Mbps connections, but you must use Category 5 for 100 and 1000 Mbps connections.
•Access Port
◦Labeled 10/100 PC on the 7962G, 7942G, 7961G, and 7941G
◦Labeled 10/100/1000 PC on the 7961G-GE and 7941G-GE
Each port supports 10/100 or 10/100/1000 Mbps half- or full-duplex connections to external devices.
•For the Cisco Unified IP Phones 7962G and 7942G, you can use either Category 3/5/5e cabling for
10-Mbps connections, but you must use Category 5 or 5e for 100 Mbps connections.
•For the Cisco Unified IP Phones 7961G, 7961G-GE, 7941G, and 7941G-GE, you can use either Category
3 or 5 cabling for 10-Mbps connections, but you must use Category 5 for 100 and 1000 Mbps connections.
Use the SW network port to connect the phone to the network. You must use a straight-through cable on this
port. The phone can also obtain inline power from a switch over this connection. See Cisco Unified IP Phone
Power for details.
Use the PC access port to connect a network device, such as a computer, to the phone. You must use a
straight-through cable on this port.
Handset
The wideband-capable handset is designed especially for use with a Cisco Unified IP Phone. It includes a
light strip that indicates incoming calls and voice messages waiting.
To connect the handset to the Cisco Unified IP Phones 7962G and 7942G, plug the cable into the handset and
the Handset port on the back of the phone.
To connect the handset to the Cisco Unified IP Phones 7961G, 7961G-GE, 7941G, and 7941G-GE, remove
the hookswitch clip from the cradle area, as shown in the following figure. Then plug the cable into the handset
and into the Handset port on the back of the phone.
Figure 1: Removing the Hookswitch Clip
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Cisco Unified IP Phones Installation
Network and Access Ports

Speakerphone
By default, the wideband-capable speakerphone is enabled on the Cisco Unified IP Phone.
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 Systems performs internal testing 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 that 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 cell 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 or by both the remote party and the
Cisco Unified IP Phone user. Humming or buzzing sounds can be caused by a range of outside sources; for
example, electric lights, electric motors, or large PC monitors. See External Device Use, on page 6 for more
information.
In some cases, hum can be reduced or eliminated by using a local power cube or power injector.Note
These environmental and hardware inconsistencies in the locations where Cisco Unified IP Phones are deployed
means that there is not a single headset solution that is optimal for all environments.
We recommend that customers test headsets in their intended environment to determine performance before
making a purchasing decision and deploying en masse.
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Speakerphone

The Cisco Unified IP Phones support wideband headsets.Note
Audio Quality
Beyond the physical, mechanical and technical performance, the audio portion of a headset must sound good
to the user and to the party on the far end. Sound quality is subjective and Cisco cannot guarantee the
performance of any headsets. However, a variety of 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.
Headset Connection
To connect a wired headset to the Cisco Unified IP Phone, plug it into the Headset port on the back of the
phone. Press the Headset button on the phone to place and answer calls using the headset.
You can use the wired headset with all of the features on the Cisco Unified IP Phone, including the Volume
and Mute buttons. Use these buttons to adjust the ear piece volume and to mute the speech path from the
headset microphone.
See the wireless headset documentation for information about connecting the headset and using the features.
Disable Headset
You can disable the headset by using Cisco Unified Communications Manager Administration.
To disable the headset, perform the following steps:
Procedure
Step 1 Choose Device >Phone and locate the phone you want to modify.
Step 2 In the Phone Configuration window, check the Disable Speakerphone and Headset check box.
Step 3 Click Apply.
Wireless Headset
By default, the Wireless Headset Hookswitch Control option is disabled. You can enable the option in the
Cisco Unified Communications Manager Administration application.
See the wireless headset documentation for information about connecting the headset and using the features.
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Headset

Enable Headset Hookswitch Control
Procedure
Step 1 Choose Device >Phone and locate the phone you want to modify.
Step 2 In the Phone Configuration window, select Enable for Headset Hookswitch Control.
External Device Use
Cisco recommends the use of good quality external devices, such as speakers, microphones, and headsets that
are shielded (screened) against unwanted radio frequency (RF) and audio frequency (AF) signals.
Depending on the quality of these devices and their proximity to other devices, such as mobile phones or
two-way radios, some audio noise may still occur. In these cases, Cisco recommends that you take one or
more of the following actions:
•Move the external device away from the source of the RF or AF signals.
•Route the external device cables away from the source of the RF or AF signals.
•Use shielded cables for the external device, or use cables with a better shield and connector.
•Shorten the length of the external device cable.
•Apply ferrites or other such devices on the cables for the external device.
Cisco cannot guarantee the performance of the system because Cisco has no control over the quality of external
devices, cables, and connectors. The system performs adequately when suitable devices are attached with
good quality cables and connectors.
In European Union countries, use only external headsets that are fully compliant with the EMC Directive
[89/336/EC].
Caution
Install Cisco Unified IP Phones
You must connect the Cisco Unified IP Phone to the network and to a power source before using it. See Cisco
Unified IP Phone Cable Installation, on page 7 for a graphical representation of the connections.
Before you install a phone, even if it is new, upgrade the phone to the current firmware image. Before
using external devices, read External Device Use, on page 6 for safety and performance information.
Note
Before You Begin
Remove the hookswitch clip (see Handset, on page 3) from the cradle area.
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Install Cisco Unified IP Phones

Procedure
Step 1 Connect the handset to the Handset port.
Step 2 Connect a headset to the Headset port.
You can add a headset later if you do not connect one now.
Step 3 (Cisco Unified IP Phones 7962G and 7942G only): Connect a wireless headset.
You can add a wireless headset later if you do not want to connect one now.
See the wireless headset documentation for information.
Step 4 Connect the power supply to the Cisco DC Adapter port.
Step 5 Connect a straight-through Ethernet cable from the switch to the network port labeled 10/100 SW on the Cisco
Unified IP Phones 7962G, 7942G, 7961G, and 7941G, or to the network port labeled 10/100/1000 SW on the
Cisco Unified IP Phones 7961G-GE and 7941G-GE.
Each Cisco Unified IP Phone ships with one Ethernet cable in the box.
You can use either Category 3/5/5e cabling for 10-Mbps connections, but you must use Category 5/5e for
100 Mbps connections.
Step 6 Connect a straight-through Ethernet cable from another network device, such as a desktop computer, to the
access port labeled 10/100 PC port on the Cisco Unified IP Phones 7962G, 7942G, 7961G, and 7941G, or to
the network port labeled 10/100/1000 PC on the Cisco Unified IP Phones 7961G-GE and 7941G-GE.
You can connect another network device later if you do not connect one now.
You can use either Category 3/5/5e cabling for 10-Mbps connections, but you must use Category 5/5e for
100 Mbps connections.
Related Topics
Set Up Remote Phone
Feature Key Capacity Increase for Cisco Unified IP Phones, on page 10
Phone Startup Process Verification, on page 14
Network Settings, on page 15
Cisco Unified IP Phone Security, on page 15
Cisco Unified IP Phone Power
Network and Access Ports, on page 3
Headset, on page 4
Cisco Unified IP Phone Cable Installation
The following figure and table show how to connect your phone.
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Cisco Unified IP Phone Cable Installation

Handset port6DC adaptor port1
Headset port7AC-to-DC power supply2
Footstand button8AC power cord3
Auxiliary port9Network port4
Access port5
Cisco Unified IP Phone Expansion Module
The Cisco Unified IP Phone Expansion Module attaches to a Cisco Unified IP Phone 7962G, 7961G and
7961G-GE to extend the number or line appearances or programmable buttons on your phone. These phones
support the Cisco Unified IP Phone Expansion Model 7914, 7915, and 7916. You can customize the button
templates for the Cisco Unified IP Phone Expansion Module to determine the number of line appearances
and speed dial buttons. See Phone Button Templates for details.
The Cisco Unified IP Phone 7941G, 7941G-GE, and 7942G do not support the Cisco Unified IP Phone
Expansion Model 7914, 7915, and 7916.
Note
You can attach one or more Cisco Unified IP Phone Expansion Modules 7914, 7915, or 7916 to the Cisco
Unified IP Phone 7962G by using one of the following methods:
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Cisco Unified IP Phone Expansion Module

•When you initially add the phone to Cisco Unified Communications Manager, by selecting one of the
following entries in the Module 1 or Module 2 fields, and choosing the appropriate expansion module
firmware:
◦7914 14-Button Line Expansion Module for the Cisco Unified IP Phone Expansion 7914
◦7915 12-Button Line Expansion Module or 7915 24-Button Line Expansion Module for the
Cisco Unified IP Phone Expansion Module 7915
◦7916 12-Button Line Expansion Module or 7916 24-Button Line Expansion Module for the
Cisco Unified IP Phone Expansion Module 7916
•After the phone is configured in Cisco Unified Communications Manager
You can attach a Cisco Unified IP Phone Expansion Module 7914 to the Cisco Unified IP Phone 7961G and
7961G-GE by using one of the following methods:
•When you initially add the phone to Cisco Unified Communications Manager, you can choose
7914 14-Button Line Expansion Module in the Module 1 or Module 2 fields and then choose the
appropriate expansion module firmware.
•After the phone is configured in Cisco Unified Communications Manager
Refer users to their Cisco Unified Communications Manager User Options web pages, so they can configure
speed-dial buttons and program buttons to access phone services on the Cisco Unified IP Phone Expansion
Module. See Phone Features User Subscription and Setup for more details.
Note
Set Up Cisco Unified IP Phone Expansion Module
To configure the Cisco Unified IP Phone Expansion Module on the Cisco Unified IP Phone, follow these
steps.
Procedure
Step 1 Log in to Cisco Unified Communications Manager Administration.
Cisco Unified Communications Manager Administration window displays.
Step 2 From the menu, choose Device >Phone.
The Find and List Phone page appears. You can search for one or more phones that you want to configure for
the Cisco Unified IP Phone Expansion Module.
Step 3 Select and enter your search criteria and click Find.
The Find and List Phone window displays showing a list of the phones that match your search criteria.
Step 4 Click the IP Phone that you want to configure for the Cisco Unified IP Phone Expansion Module.
The Phone Configuration window displays.
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Set Up Cisco Unified IP Phone Expansion Module

Step 5 Scroll to the Expansion Module Information section.
Step 6 To add support for one expansion module on Cisco Unified IP Phones 7961G and 7961G-GE, in the Module
1 field, select 7914 14-Button Line Expansion Module.
Step 7 To add support for one expansion module on Cisco Unified IP Phone 7962G, in the Module 1 field, choose:
•7914 14-Button Line Expansion Module for the Cisco Unified IP Phone Expansion Module 7914
•7915 12-Button Line Expansion Module or 7915 24-Button Line Expansion Module for the Cisco
Unified IP Phone Expansion Module 7915
•7916 12-Button Line Expansion Module or 7916 24-Button Line Expansion Module for the Cisco
Unified IP Phone Expansion Module 7916
Step 8 To add support for a second expansion module on Cisco Unified IP Phones 7961G and 7961G-GE, in the
Module 2 field, choose 7914 14-Button Line Expansion Module.
Step 9 To add support for a second expansion module on Cisco Unified IP Phone 7962G, in the Module 2 field,
choose:
•7914 14-Button Line Expansion Module for the Cisco Unified IP Phone Expansion Modules 7914
•7915 12-Button Line Expansion Module or 7915 24-Button Line Expansion Module for the Cisco
Unified IP Phone Expansion Module 7915
•7916 12-Button Line Expansion Module or 7916 24-Button Line Expansion Module for the Cisco
Unified IP Phone Expansion Module 7916
In the Firmware Load Information section, there are two fields that specify the firmware load
for Modules 1 and 2. You can leave these fields blank to use the default firmware load.
Note
Step 10 Click the Save icon.
Step 11 Click OK.
Step 12 Click Apply Config.
Step 13 Click OK.
Feature Key Capacity Increase for Cisco Unified IP Phones
The Cisco Unified IP Phone Expansion Modules 7915 and 7916 attach to your Cisco Unified IP Phone 7962G,
adding up to 48 extra line appearances or programmable buttons to your phone. The line capability increase
includes Directory Numbers (DN), line information menu, line ring menu, and line help ID.
You can configure all 48 additional keys on the Cisco Unified IP Phone Expansion Modules 7915 and 7916.
Cisco Unified IP Phones 7961G-GE and 7941G-GE do not support Cisco Unified IP Phone Expansion
Modules 7915 and 7916.
Note
Use the Phone Button Template Configuration to configure the buttons.
Cisco Unified Communications Manager includes several default phone button templates. When adding
phones, you can assign one of these templates to the phones or create a new template.
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Feature Key Capacity Increase for Cisco Unified IP Phones

Related Topics
Softkey Templates
Set Up Additional Buttons
To configure the 48 additional buttons, follow these steps:
Procedure
Step 1 From Cisco Unified Communications Manager Administration, choose Device >Device Settings >Phone
Button Template.
Step 2 Select the Add New button.
Step 3 From the drop-down list, choose a template and click Copy.
Step 4 Rename the new template.
Step 5 Update the table to 54 Directory Numbers for Cisco Unified IP Phone 7962G.
See Cisco Unified Communications Manager Administration Guide and Cisco Unified Communications
Manager System Guide for more information on creating and modifying templates.
You can also attach two Cisco Unified IP Phone Expansion Modules 7915s or two Cisco Unified IP
Phone Expansion Modules 7916s, to provide 48 additional lines or speed-dial and feature buttons.
Note
Footstand Adjustment
The Cisco Unified IP Phone includes an adjustable footstand. When you place the phone on a desktop surface,
you can adjust the tilt height to several different angles in 7.5 degree increments from flat to 60 degrees. You
can also mount these phones to the wall by using the footstand or by using the optional locking wall mount
kit.
To adjust the footstand, push in the footstand adjustment button and adjust the tilt.
Phone Cable Lock
You can secure the Cisco Unified IP Phone to a desktop by using a laptop cable lock. The lock connects to
the security slot on the back of the phone, and the cable can be secured to a desktop.
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Footstand Adjustment

The security slot can accommodate a lock up to 20 mm. Compatible laptop cable locks include the Kensington®
laptop cable lock and laptop cable locks from other manufacturers that can fit into the security slot on the
back of the phone. See the following figure.
Figure 2: Connecting a Cable Lock to the Cisco Unified IP Phone
Mount Phone on Wall
You can mount the Cisco Unified IP Phone on the wall by using the footstand as a mounting bracket, or you
can use special brackets available in a Cisco Unified IP Phone wall mount kit. Wall mount kits must be ordered
separately from the phone.
If you attach the Cisco Unified IP Phone to a wall with the standard footstand and not the wall mount kit, you
need to supply the following tools and parts:
•Screwdriver
•Screws to secure the Cisco Unified IP Phone to the wall
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Mount Phone on Wall

See the following figure for a graphical overview of the phone parts.
Figure 3: Parts Used to Wall Mount the Cisco Unified IP Phone
Footstand adjustment button: Raises and lowers adjustment plate1
Wall mounting screw holes2
Adjustment plate: Raises and lowers phone vertically3
Before You Begin
To ensure that the handset attaches securely to a wall-mounted phone, remove the handset wall hook from
the handset rest, rotate the hook 180 degrees, and reinsert the hook. Turning the hook exposes a lip on which
the handset catches when the phone is vertical. For an illustrated procedure, see Installing the Wall Mount
Kit for the Cisco Unified IP Phone at:
http://www.cisco.com/en/US/products/hw/phones/ps379/prod_installation_guides_list.html
Use care not to damage wires or pipes located inside the wall when securing screws to wall studs.Caution
Procedure
Step 1 Push in the footstand adjustment button.
Step 2 Adjust the footstand, so it is flat against the back of the phone.
Step 3 Insert two screws into a wall stud, matching them to the two screw holes on the back of the footstand.
The keyholes fit standard phone jack mounts.
Step 4 Hang the phone on the wall.
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Mount Phone on Wall

Phone Startup Process Verification
After the Cisco Unified IP Phone has power connected to it, the phone begins its startup process by cycling
through the following steps.
1These buttons flash on and off in sequence:
•Headset (only if the handset is off-hook when the phone powers up. Hang up the handset within 3
seconds to have the phone launch its secondary load. To continue with the primary load, leave the
handset off-hook.)
•Mute
•Speaker
2Some or all of the line keys flash amber in sequence.
If the line keys flash red in sequence after flashing amber, do not power down the phone until the sequence
of red flashes completes. This sequence can take several minutes to complete.
Caution
3Some or all of the line keys flash green.
Normally, this sequence takes just a few seconds. However, if the phone’s Flash memory is erased or the
phone load is corrupted, the sequence of green flashes will continue while the phone begins a software
update procedure. If the phone performs this procedure, the following buttons light to indicate progress:
•Headset—Phone is waiting for the network and completing CDP and DHCP configuration. A DHCP
server must be available in your network.
•Mute—Phone is downloading images from the TFTP server.
•Speaker—Phone is writing images to its Flash memory.
4The phone screen displays the Cisco Systems, Inc., logo screen.
5These messages appear as the phone starts:
•Verifying Load (if the phone load does not match the load on the TFTP server). If this message
appears, the phone starts up again and repeats step 1 through step 4 above.
•Configuring IP
•Updating the Trust List
•Updating Locale
•Configuring Unified CM List
•Registering
6The phone screen displays:
•Current date and time
•Primary directory number
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Phone Startup Process Verification

•Additional directory numbers and speed dial numbers, if configured
•Softkeys
If the phone successfully passes through these stages, it has started up properly. If the phone does not start
up properly, see Startup Problems.
Network Settings
If you are not using DHCP in your network, you must configure these network settings on the
Cisco Unified IP Phone after installing the phone on the network:
•IP address
•IP subnet information (subnet mask for IPv4 and subnet prefix length for IPv6)
•Default gateway IP address
•TFTP server IP address
•You also may configure the domain name and the DNS server settings, if necessary.
Cisco Unified IP Phone Settings.
Cisco Unified IP Phone Security
The security features protect against several threats, including threats to the identity of the phone and to data.
These features establish and maintain authenticated communication streams between the phone and the
Cisco Unified Communications Manager server, and digitally sign files before they are delivered.
For more information about the security features, see Cisco Unified Communications Manager Security Guide.
Related Topics
Cisco Unified IP Phone Security Features
Install Locally Significant Certificate
You can initiate the installation of a Locally Significant Certificate (LSC) from the Security Configuration
menu on the phone. This menu also lets you update or remove an LSC.
If you use a Third Party CA to sign LSCs, note that the Cisco Unified IP Phone 7900 Series only support
SHA-1 as the algorithm to sign certificates. The phones do not support SHA-2 (SHA256). For more information
on the use of a Third Party CA to sign LSCs, see CUCM Third-Party CA-Signed LSCs Generation and Import
Configuration Example in https://www.cisco.com/c/en/us/support/docs/unified-communications/
unified-communications-manager-callmanager/118779-configure-cucm-00.html.
Before You Begin
Make sure that the appropriate Cisco Unified Communications Manager and the Certificate Authority Proxy
Function (CAPF) security configurations are complete:
•The CTL file or ITL file should have a CAPF certificate.
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Network Settings

•On Cisco Unified Communications Operating System Administration, verify that the CAPF certificate
has been installed.
•The CAPF is running and configured.
For more information, see Cisco Unified Communications Manager Security Guide.
Procedure
Step 1 Obtain the CAPF authentication code that was set when the CAPF was configured.
Step 2 From the phone, choose Settings >Security Configuration.
You can control access to the Settings Menu by using the Settings Access field in the Cisco Unified
Communications Manager Administration Phone Configuration window. For more information, see
the Cisco Unified Communications Manager Administration Guide.
Note
Step 3 Press **# to unlock settings on the Security Configuration menu. See Unlock and Lock Options for information
using locking and unlocking options.
If a Settings Menu password has been set up, SIP Phones present an “Enter password”prompt after
you enter **#.
Note
Step 4 Scroll to LSC and press Update.
The phone prompts for an authentication string.
Step 5 Enter the authentication code and press Submit.
The phone begins to install, update, or remove the LSC, depending on how the CAPF was configured. During
the procedure, a series of messages appears in the LSC option field in the Security Configuration menu, so
you can monitor progress. When the procedure completes successfully, the phone displays Installed or
Not Installed.
The LSC install, update, or removal process can take a long time to complete. You can stop the process at
any time by pressing Stop from the Security Configuration menu. Settings must be unlocked before pressing
Stop
When the phone successfully completes the installation procedure, it displays Success If the phone displays
Failure the authorization string may be incorrect or the phone may not be enabled for upgrading. See error
messages generated on the CAPF server and take appropriate actions.
You can verify that an LSC is installed on the phone by choosing Settings >Model Information and ensuring
that the LSC setting shows Yes.
Step 6 Verify that an LSC is installed on the phone by choosing Settings >Model Information and ensuring that
the LSC setting shows Yes.
Related Topics
Cisco Unified IP Phone Security Features
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Install Locally Significant Certificate