This chapter helps you install the Cisco Unified IP Phone 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 Phone and Your Network
Before You Begin
Before installing the Cisco Unified IP Phone, review the
requirements in these sections:
For the Cisco Unified IP Phone to successfully operate as a
Cisco Unified IP Phone endpoint in your network, your network must meet the
VoIP configured on your Cisco routers and gateways
Cisco Unified Communications Manager 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. If the Cisco Unified Communications Manager
server is located in a different time zone than the phones, the phones do not
display the correct local time.
Cisco Unified Communications Manager Setup
The Cisco Unified IP Phone requires Cisco Unified
Communications Manager to handle call processing. Refer to
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 Administration
before connecting any Cisco Unified IP Phone to the network. For information
about enabling and configuring autoregistration, refer to
Cisco Unified Communications Manager Administration Guide.
You must use Cisco Unified Communications Manager
Administration to configure and assign telephony features to the Cisco Unified
In Cisco Unified Communications Manager Administration, you can
add users to the database, add users to user groups, and associate users to
specific phones. In this way, users gain access to their Cisco Unified
Communications Manager User Option page to configure items such as Call Forward, Speed Dial, and voice message system options.
The back of the
Cisco Unified IP Phone 8941 and 8945 includes these ports:
Network port: Labeled network
Access port: Labeled computer
Each port supports 10/100 Mbps half- or full-duplex connections
to external devices. Cisco Unified IP Phone 8945 also supports 1000 Mbps
full-duplex connections to external devices. You can use either Category 3, 5, or 5e
cabling for 10Mbps connections, but you must use Category 5 or 5e for 100 or 1000
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.
The Cisco Unified IP Phone uses a handset that is designed especially for the phone. The handset includes a light strip to indicate incoming calls and voice messages waiting.
To connect a handset to the Cisco Unified IP Phone, plug the cable into the handset and into the Handset port on the back of the phone.
By default, the speakerphone is enabled on the Cisco Unified
You can disable the speakerphone by using Cisco Unified
Communications Manager Administration.
Device > Phone.
Select the phone you want to modify.
Phone Configuration window for the phone, check
Disable Speakerphone check box.
Although Cisco 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.
Cisco recommends 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.
In some cases, hum may be reduced or eliminated by using a local power
cube or power injector.
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.
Cisco recommends that customers test headsets in their intended
environment to determine performance before making a purchasing decision and
deploying the headsets.
The Cisco Unified IP Phone 8941 and 8945 supports wideband headsets.
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.
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
To connect a wired headset to the Cisco Unified IP Phone, perform these steps:
Plug the headset into the Headset port on the back of the phone.
Headset button on the phone to place and
answer calls using the headset.
Disable Wired Headset
You can disable the headset by using Cisco Unified
Communications Manager Administration. If you do so, you also disable the
To disable the headset from Cisco Unified Communications Manager
Device > Phone
and locate the phone that you want to modify.
In the Phone Configuration window (Product Specific Configuration
layout portion), select the
Disable Speakerphone and Headset check box.
Bluetooth Wireless Headsets
The Cisco Unified IP Phone 8945 supports Bluetooth Class 2 technology when the headsets support Bluetooth. Bluetooth enables low-bandwidth wireless connections within a range of 30 feet (10 meters). The best performance is in the 3- to 6-foot range (1 to 2 meters). You can pair up to 5 headsets, but only the last one connected is used as the default.
The Cisco Unified IP Phone 8941 does not support Bluetooth.
There can be a potential interference issues. Cisco recommends that you reduce the proximity of other 802.11b/g devices, Bluetooth devices, microwave ovens, and large metal objects. If possible, configure other 802.11 devices to use the 802.11a channels.
For a Bluetooth wireless headset to work, it does not need to be within direct line-of-sight of the phone, but some barriers, such as walls or doors, and interference from other electronic devices, could affect the connection.
The Cisco Unified IP Phone 8945 supports various Hands-free Profile features that enable you to use hands-free devices (such as Bluetooth wireless headsets) to perform certain tasks without having to handle the phone. For example, instead of pressing Redial on the phone, users can redial a number from their Bluetooth wireless headset according to instructions from the headset manufacturer.
The following hands-free features apply to Bluetooth wireless headsets used with the Cisco Unified IP Phone 8945:
Answer a call
End a call
Change the headset volume for a call
Hold and Accept
Release and Accept
Hands-free devices may differ in how features are activated. Device manufacturers may also use different terms when referring to the same feature.
For more information, see the manufacturer’s documentation.
Bluetooth Wireless Headset and Cisco Unified IP Phones
The Cisco Unified IP Phone connects with headsets using a shared key authentication and encryption method. The Cisco Unified IP Phone can be connected with up to five headsets at a time. The last one connected is used as the default. Pairing is typically performed once for each headset.
After a device is paired, the Bluetooth connection is maintained as long as both devices (phone and headset) are enabled and within range of each other. The connection typically re-establishes itself automatically if either of the devices powers down then powers up. However, some headsets require user action to re-establish the connection.
The Bluetooth icon indicates whether or not a device is connected.
When headsets are more than 30 feet (10 meters) away from the Cisco Unified IP Phone, Bluetooth drops the connection after a 15 to 20 second timeout. If the paired headset comes back into range of the Cisco Unified IP Phone and the phone is not connected to another Bluetooth headset, the in-range Bluetooth headset automatically reconnects. For certain phone types that operate in power-save modes, the user can "wake-up" the headset by tapping on the operational button to initiate the reconnect.
Enable Bluetooth Wireless Headset
Before you use your Bluetooth Wireless headset, you must
In Cisco Unified Communications Manager Administration, choose
Device > Phone,
locate the phone you want to modify, and go to the Phone Configuration window
for that phone.
In the Phone Configuration window, select
Enable for the Bluetooth setting and
Handsfree for the Bluetooth Profiles setting.
Save your changes.
Add Bluetooth Wireless Headset
Cisco recommends that users read the headset user guide for more information about pairing and connecting the headsets.
After the Bluetooth wireless headset is enabled through Cisco Unified Communications Manager Administration, you must add the headset as an accessory to the phone by following these steps:
On the Cisco Unified IP Phone 8945, press Applications and choose Accessories.
Choose Add Bluetooth Accessory.
The Adding Bluetooth Accessory window appears. A message tells you to make sure your accessory is “discoverable,” which means that the Bluetooth should be powered on and in “discoverable” or “pairing” mode.
The phone locates the Bluetooth device.
The Cisco Unified IP Phone automatically tries to pair with the headset using the “0000” PIN. If the headset does not use the "0000" PIN, a message displays to request a PIN so that the Bluetooth device can be paired with the Cisco Unified IP Phone
If the phone prompts for a PIN, enter the correct PIN by referring to the headset user guide.
After the phone has the correct PIN, the phone tries to connect to the accessory. The phone provides feedback to the user while it tries to connect the accessory. If unable to connect, an error alert appears to let the user know the reason for the failure. There is a timeout of 10 seconds for the phone to try to connect the accessory. If the timer expires without a successful connection, an error alert is displayed.
Remove Bluetooth Device from Phone
When you want to remove a Bluetooth device, you delete it
from the Accessories menu.
Highlight the device that you want to remove and press
Related Bluetooth Documentation
For information about how to use your Bluetooth wireless headset, see:
Cisco Unified IP Phone 8941 and 8945 User Guide for Cisco Unified Communications Manager (SCCP and SIP)
User guides provided with your headset
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].
If your phone is placed on a table or desk, connect the footstand to the back of the phone.
Insert the curved connectors into the lower slots.
Lift the footstand until the connectors snap into the upper slots.
Connecting and disconnecting the footstand may require a little more force than you expect.
Install Cisco Unified IP Phone
You must connect the Cisco Unified IP Phone to the network
and to a power source before using it. See Phone Connections for the connections for
Cisco Unified IP Phone 8941 or Phone Connections for the connections for Cisco Unified IP Phone 8945.
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 for
safety and performance information.
To install a Cisco Unified IP Phone, perform the following
Connect the handset to the Handset port.
(Optional)Connect a headset to the Headset port. You
can add a headset later if you do not connect one now.
Connect a straight-through Ethernet cable from the switch to the
network port labeled Network on the
Cisco Unified IP Phone 8941 and 8945. Each Cisco Unified IP Phone ships with one Ethernet
cable in the box.
You can use either Category 3, 5, or 5e cabling for 10Mbps
connections, but you must use Category 5 or 5e for 100 or 1000 Mbps
You can reduce the amount of energy that the Cisco Unified IP Phone 8941 and 8945 consumes by scheduling when the phone goes into power-save mode. In power-save mode, the backlight on the screen is not lit when the phone is not in use. The phone remains in power-save mode for the scheduled duration or until the user lifts the handset or presses any button. In the Phone Configuration window on Cisco Unified Communications Manager Administration, configure the following parameters.
Days Backlight Not Active: Specify the days that the backlight remains inactive.
Backlight on Time: Schedule the time of day that the backlight automatically activates on the days listed in the off schedule.
Backlight on Duration: Indicates the length of time that the backlight is active after the backlight is enabled by the programmed schedule.
Backlight Idle Timeout: Defines the period of user inactivity on the phone before the backlight is turned off.
Phone Startup Process
After the Cisco Unified IP Phone has power connected to it,
the phone begins its startup diagnostic process by cycling through the
The following LED buttons flash on and off during the various
stages of bootup as the phone checks its hardware. See the following table for
a list of the hardware test and the LED diagnostic status.
Table 1 LED Diagnostic Status
Power is Ready
Flash is Accessible
RAM Test Successful
Ethernet Test Successful
The screen displays the Cisco Systems, Inc., logo screen.
This message appears as the phone starts up:
Phone not registered
The home screen displays:
Current date and time
Primary directory number
Additional directory numbers and speed dial numbers, if
configured (only on Cisco Unified IP Phone 8941)
If the phone successfully passes through these stages, it
has started up properly. If the phone does not start up properly, see the
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 subnet information
TFTP server IP address
You also may configure the domain name and the DNS server settings,
The security features protect against several threats,
including threats to the identity of the phone and to data. These features
establish and maintain secure 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 the
related topics and the
Cisco Unified Communications Manager Security Guide.
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.
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 should have a
Using Cisco Unified
Communications Operating System Administration, verify that the CAPF
certificate has been installed.
The CAPF is running and
Cisco Unified Communications Manager Security Guide for
Obtain the CAPF authentication code that was set when the CAPF was
From the phone, choose Applications > Administrator
Settings > Security Setup.
You can control access to the Administrator Settings Menu
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
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
You can verify that an LSC is installed on the phone by choosing
Settings > Security Setup and
ensuring that the LSC setting shows Installed.