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
functionality. For more information, see
Cisco Unified IP Phone and telephony networks.
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 is configured on your Cisco routers and gateways.
Cisco Unified Communications Manager is installed in your network
and is 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.
Voice over Wireless LAN (Optional for Cisco Unified IP Phone 9971)
Cisco Aironet Access Points (APs) are configured to support Voice
over WLAN (VoWLAN).
Controllers and switches are configured to support VoWLAN.
Security is implemented for authenticating wireless voice devices
Cisco Unified Communications Manager
The Cisco Unified IP Phone requires Cisco Unified
Communications Manager to handle call processing. See
the Cisco Unified Communications Manager Administration Guide or
the 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
autoregistration is enabled and is properly configured in Cisco Unified
Communications Manager Administration before you connect any Cisco Unified IP
Phone to the network. For information about enabling and configuring
the 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 and associate them with specific phones. In this way,
users gain access their Cisco Unified Communications Manager User Options page
to configure items such as call forwarding, speed dialing, and voice messaging
The back of the
Cisco Unified IP Phone includes these ports:
Each port supports 10/100/1000 Mbps half- or full-duplex
(except for full-duplex only for 1000 Mbps) connections to external devices.
You can use Category 3, 5, or 5e cabling for 10 Mbps connections, Category 5 or 5e for 100 Mbps connections, and Category 5e for 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.
Use the computer port to connect a network device, such as a
computer, to the phone. You must use a straight-through cable on this port.
The wideband-capable handset is designed especially for use
with a Cisco Unified IP Phone. The handset includes a light strip that indicates
incoming calls and voice messages that are 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.
With a wall-mounted phone, you might need to adjust the handset
rest to ensure that the receiver cannot slip out of the cradle.
The Cisco Unified IP Phone supports a maximum of five devices that connect to each USB port. Each device that connects to the phone is included in the maximum device count. For example, your phone can support five USB devices (such as three Cisco Unified IP Color Key Expansion modules, one hub, and one other standard USB device) on the side port and five additional standard USB devices on the back port. The Cisco Unified IP Phone 8961 does not contain a back USB port. Many third-party USB products count as multiple USB devices; for example, a device containing a USB hub and headset can count as two USB devices. For more information, see the USB device documentation.
Unpowered hubs are not supported, and powered hubs with more than four ports are not supported.
USB headsets that connect to the phone through a USB hub are not supported.
The Cisco Unified Video Camera that connects to the phone through a USB hub is not supported.
External Speakers and Microphone
External speakers and microphones are plug-and-play accessories. You can connect an external PC-type microphone and powered speakers (with amplifier) on the Cisco Unified IP Phone 9951 or 9971 by using the line in/out jacks. Connecting an external microphone disables the internal microphone and connecting an external speaker disables the internal phone speaker.
Using poor quality external audio devices, playing loudspeakers at very loud volumes, or placing the microphone very close to the loudspeaker may result in undesirable echo for other parties on your speakerphone calls.
Although Cisco Systems performs internal testing of third-party headsets for use with Cisco Unified IP Phones, Cisco does not certify nor support products from headset or handset vendors.
The phone reduces some background noise that a headset microphone detects, but if you want to further reduce the background noise and improve the overall audio quality, use a noise cancelling headset.
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 mobile (cell) phones and two-way radios, some audio noise or echo may still occur. Either the remote party or both the remote party and the Cisco Unified IP Phone user may hear an audible hum or buzz. A range of outside sources can cause humming or buzzing sounds; for example, electric lights, electric motors, or large PC monitors.
In some cases, using a local power cube or power injector may reduce or eliminate hum.
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.
Cisco recommends that customers test headsets in the intended environment to determine performance before making a purchasing decision and deploying on a large scale.
Beyond 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 are 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 earpiece volume and to mute the speech path from the headset
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.
Wired and wireless USB headsets are supported. You can connect
a USB headset (or the base station for a wireless headset) to either the back
USB port (if your phone has this port) or to the side USB port.
The Cisco Unified IP Phone 9951 and 9971 contains both a back
USB port and a side USB port, while the Cisco Unified IP Phone 8961 contains
only a side USB port.
You must enable the applicable USB port (either the back USB
port parameter or the side USB port parameter) in Cisco Unified Communications
Manager Administration (in the Product Specific Configuration layout portion of
the window). Also, for the Enable/Disable USB Classes parameter in Cisco
Unified Communications Manager Administration, ensure that
Audio Class is selected.
These parameters can be enabled on either the
Phone Configuration window
(Device > Phone),
the Enterprise Phone Configuration window
(System > Enterprise Phone
Configuration), or the
Common Phone Profile window
(Device > Device
Settings > Common Phone Profile).
Also check the corresponding Override Common Settings parameter in the
To disable the USB headset, disable the USB port (or disable
the Audio Class parameter) that you enabled in Cisco Unified Communications
Manager Administration. Also, you can select another type of headset in the
Accessories window on the phone, thus disabling the previously enabled headset.
Analog headsets are supported on the
Cisco Unified IP Phone 8961, 9951, and 9971. However, the
Cisco Unified IP Phone 8961, 9951, and 9971 cannot detect when an analog
headset is plugged in. For this reason, the analog headset displays by default in
the Accessories window on the phone screen.
Displaying the analog headset as the default allows users to enable wideband for the analog headset.
See the wireless headset documentation for information about
connecting the headset and using the features.
Bluetooth Wireless Headsets
The Cisco Unified IP Phone 9951 and 9971 supports Bluetooth Class 2 technology for headsets that 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 headset that was connected is used as the default.
Potential interference issues can occur. 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, can affect the connection.
Bluetooth Wireless Headset and Cisco Unified IP Phones
The Cisco Unified IP Phones 9951 and 9971 support Bluetooth
Cisco Unified IP Phone uses a shared key authentication and
encryption method to connect with headsets. The
Cisco Unified IP Phone can connect with up to five headsets at a time. The last connected headset is used as the default. Pairing is typically performed once for
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 reestablishes itself
automatically if either of the devices powers down then powers up. However,
some headsets require user action to reestablish the connection.
The Bluetooth icon indicates whether 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.
You must enable the headset and then add it as a phone
Your phone supports various Handsfree 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 by following instructions from the headset manufacturer.
These hands-free features apply to Bluetooth wireless headsets that are used with the Cisco Unified IP Phone 9951 and 9971:
Answer a call
End a call
Change the headset volume for a call
Hold and Accept
Release and Accept
Hands-free devices may differ as to how features are activated. Device manufacturers may also use different terms when referring to the same feature.
For more information, see the manufacturer documentation.
Add Headset as Phone Accessory
After the Bluetooth wireless headset is enabled through
Cisco Unified Communications Manager Administration, you must add the headset
as an accessory to the phone.
On the Cisco Unified IP Phone 9951 or 9971, press
Applications and select
Select 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
After the Bluetooth device is located, the name appears in the
window, and a message asks for a PIN so that the Bluetooth device
can be paired with the
Cisco Unified IP Phone.
Cisco Unified IP Phone automatically tries to pair with the headset by using a PIN
"0000." If the headset uses a different PIN, enter the correct
PIN by referring to the user guide that came with the headset.
Cisco recommends that users read the headset user guide for more
information about pairing and connecting the headsets.
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. A timeout of 10 seconds allows the
phone to try to connect the accessory. If the timer expires without a
successful connection, an error alert displays.
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.
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
Cisco Unified IP Phone 8961, 9951, and 9971 User Guide for
Cisco Unified Communications Manager (SIP)
User guides provided with your headset
Important Note About Headset Types
Only one headset type works at any given time, so if you use both a Bluetooth headset and an analog headset that are attached to the phone, enabling the Bluetooth headset disables the analog headset. To enable the analog headset, disable the Bluetooth headset. Plugging a USB headset into a phone that has Bluetooth headset enabled disables both the Bluetooth and analog headset. If you unplug the USB headset, you can either enable the Bluetooth headset or disable the Bluetooth headset to use the analog 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].
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
Firmware upgrades over the WLAN interface may take longer than
upgrading over the wired interface, depending on the quality and bandwidth of
the wireless connection. Some upgrades may take more than hour.
To install a Cisco Unified IP Phone, perform the
tasks described in the following steps.
Connect the handset to the handset port.
Connect a headset to the headset port. You
can add a headset later if you do not connect one now. For more information,
Connect a wireless headset (for the Cisco
Unified IP Phone 9951 and 9971 only). You can add a wireless headset later if
you do not want to connect one now. For more information, see your wireless
Connect a straight-through Ethernet cable from the switch to the
network port labeled 10/100/1000 SW on the Cisco Unified IP Phone. Each Cisco
Unified IP Phone ships with one Ethernet cable in the box. Use Category
3, 5, or 5e cabling for 10 Mbps connections; Category 5 or 5e for 100 Mbps
connections; and Category 5e for 1000 Mbps connections. For more
Network and Computer Ports
Connect a straight-through Ethernet cable
from another network device, such as a desktop computer, to the computer port
on the Cisco Unified IP Phone. You can connect another network device later if
you do not connect one now.
You can use Category 3, 5, or 5e cabling for 10 Mbps
connections; Category 5 or 5e for 100 Mbps connections; and Category 5e
for 1000 Mbps connections. For more information, see Network and Computer Ports
Enable the phone to use the wireless local
area network (WLAN).
You must disconnect all Ethernet connections if you deploy the
Cisco Unified IP Phone 9971 on a wireless LAN.
After the Cisco Unified IP Phone has power connected to it,
the phone begins the startup diagnostic process, by cycling through the
The Feature and Sessions buttons flash amber and then
green in sequence during the various stages of bootup as the phone checks the
The main screen displays Registering to Cisco Unified Communications Manager.
If the phone completes these stages successfully, it has
started up properly and the
Select button stays lit until it is selected.
If you are not using DHCP in your network, you must configure
these network settings on the Cisco Unified IP Phone after you install the phone
on the network:
IP subnet information
TFTP server IP address
If necessary, you may also configure the domain name and the DNS server 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 ensure that the phone
uses only digitally signed files.
Cisco Unified Communications Manager Release 8.5(1) and later
includes Security by Default, which provides the following security features
for Cisco Unified IP Phones without running the CTL client:
Signing of the phone configuration files
Phone configuration file encryption
HTTPS with Tomcat and other Web services
Secure signaling and media features still require you to run the CTL
client and use hardware eTokens.
For more information about the security features, see the
related topics and the
Cisco Unified Communications Manager Security Guide.
A Locally Significant Certificate (LSC) installs on phones
after you perform the necessary tasks that are associated with the Certificate
Authority Proxy Function (CAPF). You can use Cisco Unified Communications
Manager Administration to configure an LSC, as described in the
Cisco Unified Communications Manager Security Guide.
Alternatively, you can initiate the installation of an LSC
from the Security Setup menu on the phone. This menu also lets you update or
remove an LSC.
Use this procedure to configure an LSC on the phone.
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 or ITL file has a
In Cisco Unified
Communications Operating System Administration, verify that the CAPF
certificate is 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, press Applications and
Settings > Security Setup.
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
Choose LSC and press
The phone prompts for an authentication string.
Enter the authentication code and press
The phone begins to install, update, or remove the LSC, depending
on how the CAPF is 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 is complete, Installed or Not Installed displays on the phone.
The LSC install, update, or removal process can take a long time
to complete. You can stop the process at any time by pressing the
Stop softkey from the Security Setup menu.
When the phone installation procedure is successful, the Installed message displays. If the phone displays
Not Installed, then the authorization string may be incorrect
or the phone may not enabled for upgrading. If the CAPF operation deletes the
LSC, the phone displays
Not Installed to indicate that the operation succeeded. See the
error messages that were generated on the CAPF server and take appropriate actions.