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Cisco 9971 Deployment Manual
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Cisco 9971 Deployment Manual

Unified ip phone wireless lan deployment guide
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Cisco Unified IP Phone 9971

Wireless LAN Deployment Guide
The Cisco Unified IP Phone 9971 is adaptable for professionals that require the ability to unplug the wired network connection
and remain connected. The Wireless LAN and Bluetooth 2.1 + EDR capabilities enable mobility and cord-free
communications. The Cisco Unified IP Phone 9971 supports both the headset and handsfree profiles.
This guide provides information and guidance to help the network administrator deploy these phones in a wireless LAN
environment.

Revision History

Date
11/17/2009
5/3/2010
12/15/2010
Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide
Comments
9.0(1) Release
9.0(2) Release
9.1(1) Release
1

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Summary of Contents for Cisco 9971

  • Page 1: Cisco Unified Ip Phone 9971

    Wireless LAN Deployment Guide The Cisco Unified IP Phone 9971 is adaptable for professionals that require the ability to unplug the wired network connection and remain connected. The Wireless LAN and Bluetooth 2.1 + EDR capabilities enable mobility and cord-free communications.

  • Page 2: Table Of Contents

    Contents   Requirements for the Cisco Unified IP Phone 9971 ..........................5   Site Survey .......................................5   RF Validation ......................................5   Call Control ......................................6   Supported Protocols....................................6   Supported Access Points ..................................6   Supported Antennas ....................................8   Phone Models and Localization ................................9  ...
  • Page 3 Configuring Video Bandwidth................................36   Configuring Video and Camera Capabilities ............................36   Product Specific Configuration Options ...............................37   Configuring the Cisco Unified Wireless LAN Controller and Access Points ..................43   SSID / WLAN Settings ...................................43   Controller Settings ....................................46   802.11 Network Settings..................................47  ...
  • Page 4 Phone Logs......................................68   WLAN Status Indicator ..................................69   WLAN Disconnect Display..................................70   Restoring Factory Defaults ...................................70   Capturing a Screenshot of the Phone Display ............................70   Phone Accessories....................................70   Additional Documentation..................................72 Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 5: Requirements For The Cisco Unified Ip Phone 9971

    The cell edge should be designed to -67 dBm where there is a 20-30% overlap of adjacent access points at that signal level. This ensures the 9971 phone always has adequate signal and can hold a signal for at least 5 seconds in order to roam seamlessly.

  • Page 6: Call Control

    Call Control For call control, the Cisco Unified IP Phone 9971 supports only Session Initiation Protocol (SIP) on the following applications: Cisco Unified Communications Manager 7.1(3) and later • Cisco Unified Communications Manager Express 7.1(3) and later • SRST 7.1(3) and later •...
  • Page 7 Note: VoWLAN is not currently supported in conjunction with outdoor MESH technology (1500 series). party access points are not supported, as there is no interoperability testing performed against 3 party access points. Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 8: Supported Antennas

    The table below lists the modes that are supported by each Cisco access point. Cisco AP 802.11a 802.11b 802.11g 802.11n Autonomous Unified Series 1100 Optional 1130AG 1140 1200 Optional Optional 1230AG 1240AG 1250 1260 3500 Supported Antennas Some of the Cisco Access Points require or allow external antennas.

  • Page 9: Phone Models And Localization

    World Mode (802.11d) If using the Cisco Unified IP Phone 9971, then it is required to enable 802.11d. The Cisco Unified IP Phone 9971 uses 802.11d to determine which channels and transmit powers to use and inherits its client configuration from the associated access point.

  • Page 10: Supported Countries

    Supported Countries Below are the countries and their 802.11d codes that are supported by the Cisco Unified IP Phone 9971. Argentina (AR) India (IN) Poland (PL) Australia (AU) Indonesia (ID) Portugal (PT) Austria (AT) Ireland (IE) Puerto Rico (PR) Belgium (BE)

  • Page 11: Radio Characteristics

    Download the locale packages from the Localization page at the following URL: http://www.cisco.com/kobayashi/sw-center/telephony/callmgr/locale-installer.shtml Radio Characteristics The following table lists the data rates, ranges, and receiver sensitivity info for Cisco Unified IP Phone 9971. 802.11a Data Rate Range Receiver Sensitivity...

  • Page 12: Bluetooth

    Bluetooth The Cisco Unified IP Phone 9971 supports Bluetooth Class 2 technology allowing for wireless headset communications. Bluetooth enables low bandwidth wireless connections within a range of 30 feet, however it is recommended to keep the Bluetooth device within 10 feet of the phone.

  • Page 13: Video Calls

    Manager must be applied. The USB camera that attaches to the back of the Cisco Unified IP Phone 9971 or 9951 is also required to transmit video. A Videoconferencing System with MCU running version 5.7 or later is required to provide videoconferencing capabilities.

  • Page 14: Extensible Authentication Protocol - Flexible Authentication Via Secure Tunneling (Eap-Fast)

    RADIUS server. To enable EAP-FAST, a certificate must be installed. The Cisco Unified IP Phone 9971 currently supports only automatic provisioning of the PAC, so enable “Allow anonymous in- band PAC provisioning” on the RADIUS server as shown below. Both EAP-GTC and EAP-MSCHAPv2 must be enabled when “Allow anonymous in-band PAC provisioning” is enabled.

  • Page 15: Cisco Centralized Key Management (Cckm)

    PAC provisioning” is enabled. Ensure that the Cisco Unified IP Phone 9971 has connected to the network during the grace period to ensure it can use its existing PAC created either using the active or retired master key in order to get issued a new PAC.

  • Page 16: Eap And User Database Compatibility

    When CCKM is utilized, roaming times can be reduced from 400-500 ms to less than 100 ms, where that transition time from one access point to another will not be audible to the user. As of the 9.1(1) release, the Cisco Unified IP Phone 9971 supports CCKM with WPA2 (AES or TKIP), WPA (TKIP or AES) and 802.1x (WEP) authentication.

  • Page 17: Voice Security

    • Power Management The Cisco Unified IP Phone 9971 primarily is in active mode, so the radio will always be on. However, power save protocols such as U-APSD or PS-POLL can be utilized for off-channel scanning or when using Coexistence (802.11b/g + Bluetooth).

  • Page 18: Configuring Qos In Cisco Unified Communications Manager

    Configuring Cisco IOS Access Points Use the following QoS policy on the Cisco IOS access point (AP) to enable DSCP to CoS (UP) mapping. This allows RTP packets to be placed into the voice queue, if those packets are marked correctly, when received at the access point level.

  • Page 19: Configuring Cisco Switch Ports

    Note: When using the Cisco Unified Wireless LAN Controller, DSCP trust must be implemented or trust the UDP data ports used by the Cisco Unified Wireless LAN Controller (LWAPP = 12222 and 12223; CAPWAP = 5246 and 5247) on all interfaces where wireless packets will traverse to ensure QoS markings are correctly set.

  • Page 20: Sample Voice Packet Capture

    Voice Sample Voice Packet Capture This packet capture below shows that RTP packets bound for the Cisco Unified IP Phone 9971 over the air should be marked with DSCP = EF and UP = 6. Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 21: Call Admission Control

    • The Cisco Unified IP Phone 9971 will auto-negotiate the PHY rate to be used for TSPEC. By default it will try 12 Mbps, but if not enabled on the access point, then it will try the next highest enabled data rate on the access point.

  • Page 22: Roaming Admission Control

    Roaming Admission Control During a call, the Cisco Unified IP Phone 9971 measures Received Signal Strength Indicator (RSSI) and Packet Error Rate (PER) values for the current and all available access points to make roaming decisions. If the original access point where the call was established had Call Admission Control (TSPEC) enabled, then the wireless IP phone will send an ADDTS request during the roam to the new access point.

  • Page 23: Roaming

    If the preferred band is not available, then the Cisco Unified IP Phone 9971 will try to use the less preferred band if available. If the phone loses connectivity to or out of range of the preferred band, where the less preferred band signal is available, then the phone will attempt to associate to that less preferred band.

  • Page 24: Designing The Wireless Lan For Voice

    The Cisco Unified IP Phone 9971 supports the IGMP query feature, which can be used to reduce the amount of multicast traffic on the wireless LAN when not necessary. Ensure that IGMP snooping is also enabled on all switches. Note: If using Coexistence where 802.11b/g and Bluetooth are being used simultaneously, then multicast voice is not supported.

  • Page 25: Using Dynamic Frequency Selection (Dfs) On Access Points

    A UNII-3 channel (5.745 - 5.805 GHz) can optionally be used if available. In this diagram, 5 GHz cells use a non-DFS channel while other nearby cells use DFS channels to permit maximum call capacity under all conditions. Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 26: Ghz (802.11B/G)

    802.11b access points. Non-overlapping channels must be used and allow at least 20 percent overlap with adjacent channels when deploying phones in the 802.11b/g environment. Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 27: Signal Strength And Coverage

    Signal Strength and Coverage To ensure acceptable voice quality, the Cisco Unified IP Phone 9971 should always have a signal of -67 dBm or higher when using 2.4 or 5 GHz and ensure the Packet Error Rate (PER) is no higher than 1%.
  • Page 28 However there are products that also utilize the non-licensed 5 GHz frequency (i.e. 5.8 GHz cordless phones, which can impact UNII-3 channels). Elevator Office File / Supply Shafts Room Break Room (Microwave Ovens 2450 MHz) Conference Room Stairwells (Reinforced Cubes Building Area) Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 29: Configuring Data Rates

    The Cisco Unified WCS can be utilized to verify signal strength and coverage. Configuring Data Rates It is recommended to disable rates below 12 Mbps for 802.11a and below 12 Mbps for 802.11b/g deployments where capacity and range are factored in for best results.

  • Page 30: Call Capacity

    Design the network to accommodate the desired call capacity. The Cisco Access Point can support up to 27 bi-directional RTP streams for both 802.11a and 802.11g at a data rate of 24 Mbps or higher. To achieve this capacity, there must be minimal wireless LAN background traffic and radio frequency (RF) utilization.

  • Page 31: Video Calls

    Do not use default setting of Max power for client power as that will not advertise DTPC to the client. If the access point does not support DTPC, then the Cisco Unified IP Phone 9971 will use the highest available transmit power depending on the current 802.11 mode and data rate.

  • Page 32: Verification With Site Survey Tools

    These are many tools and applications that can be utilized to verify coverage, quality and configuration. Cisco Wireless Control System (WCS) for Unified Wireless LAN management • Cisco Wireless LAN Solution Engine (WLSE) for Autonomous Wireless LAN management • Cisco Spectrum Expert •...

  • Page 33: Cisco 9971 Site Survey

    Cisco 9971 Site Survey The Cisco Unified IP Phone 9971 has a Site Survey application, which is an offline mode that gathers information about the access points for the configured network profile and generates and HTML report after exiting the application.

  • Page 34: Configuring Cisco Unified Communications Manager

    Cisco Unified Communications Manager provides many different phone, calling and security features. Phone Button Templates The Cisco Unified IP Phone 9971 supports 6 lines. The default phone button template includes support for 2 lines and 4 speed dials. Custom phone button templates can be created with the option for many different features, which can then be applied on a phone by phone basis.

  • Page 35: G.722 Advertisement

    G.722 Advertisement Cisco Unified Communications Manager version 7.1(3) supports the ability to configure whether G.722 is to be a supported codec system wide or not. For more information, refer to the Cisco Unified Communications Manager documentation. http://www.cisco.com/en/US/products/sw/voicesw/ps556/tsd_products_support_series_home.html Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 36: Common Settings

    For better video quality it is recommended to set the video call bit rate to at least 1 Mbps to achieve VGA quality. Configuring Video and Camera Capabilities In order for the Cisco Unified Wireless IP Phone 9951 or 9971 to send and receive video, that capability must be enabled in the Cisco Unified Communications Manager version 8.0.

  • Page 37: Product Specific Configuration Options

    Set the “Video Capabilities” option to “Enabled” in the phone’s configuration within the Product Specific Configuration Layout section. In order for the Cisco Unified Wireless IP Phone 9951 or 9971 to utilize the USB camera, it must be enabled in the Cisco Unified Communications Manager version 8.0.
  • Page 38 8 seconds before forwarding packets between the PC port and the switched port. This should be enabled if connecting both ports to a switch for redundant links or if linking to another phone. Default is disabled. Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...
  • Page 39 Determines if the recording tone is enabled or disabled. Default setting is disabled. Recording Tone Local Volume The remote recording tone volume can be configured. This is on a 0-100% range, where 100 is the default setting. Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...
  • Page 40 Cisco Unified Communications Manager in order to failover to a backup Communications Manager or SRST. To configure product specific configuration options for the Cisco Unified IP Phone 9971 with Cisco Unified Communications Manager Express, create an ephone template with the necessary options.
  • Page 41 Logging Display loggingDisplay 0 = Disabled; 1 = PC Controller; 2 = Enabled Load Server loadServer x.x.x.x Recording Tone recordingTone 0 = Disabled; 1 = Enabled Recording Tone Local Volume recordingToneLocalVolume 0-100 Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...
  • Page 42 Enable individual phone configuration files with the following commands. telephony-service cnf-file perphone create cnf-files For more information on these features, see the Cisco Unified IP Phone 9971 Administration Guide or the Cisco Unified IP Phone 9971 Release Notes. http://www.cisco.com/en/US/product/phones/ps10453/prod_maintenance_guides_list.html http://www.cisco.com/en/US/product/phones/ps10453/prod_release_notes_list.html...

  • Page 43: Configuring The Cisco Unified Wireless Lan Controller And Access Points

    The SSID to be used by voice clients can be configured to only apply to a certain 802.11 radio type. It is recommended to have the Cisco Unified IP Phone 9971 operate on the 5 GHz band due to have many channels available and not as many interferers as the 2.4 GHz band has.
  • Page 44 In order to utilize CCKM, enable WPA2 policy with AES encryption and 802.1x + CCKM for authenticated key management type when the Cisco Unified IP Phone 9971 is running firmware version 9.1(1) or later in order to enable fast secure roaming.
  • Page 45 The WMM policy can be set to “Required” if only the Cisco Unified IP Phone 9971 or other WMM enabled phones will be using this SSID. If 7920 or other non-WMM clients will associate using this SSID, then ensure the WMM policy is set to “Allowed”.

  • Page 46: Controller Settings

    In 6.0 and later, this is referred to as Client Load Balancing and is configurable under the WLAN configuration (SSID settings). If using layer 3 mobility, then symmetric tunneling should be enabled . In the recent versions, Symmetric Mobility Tunneling is enabled by default and non-configurable. Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 47: 802.11 Network Settings

    When multiple Cisco Unified Wireless LAN Controllers are to be in the same mobility group, then the IP address and MAC address of each Cisco Unified Wireless LAN Controller should be added to the Static Mobility Group Members configuration. 802.11 Network Settings If using 5 GHz, ensure the 802.11a network status is set to enabled.
  • Page 48 If there are existing 802.11b clients, then 11 Mbps should be set as the mandatory (basic) rate and 12-24 or 54 Mbps as supported (optional). 36-54 Mbps can optionally be disabled, if there are not any applications that can benefit from those rates. Enable CCX Location Measurement. Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 49: Auto Rf

    Configure the access point transmit power level assignment method for either 5 or 2.4 GHz depending on which band is to be utilized. If using 5 GHz, ensure that channel 165 is not enabled in the DCA list as the Cisco Unified IP Phone 9971 does not support channel 165.
  • Page 50 If using 2.4 GHz, only channels 1, 6, and 11 should be enabled in the DCA list. Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...
  • Page 51 This may be necessary if there is an intermittent interferer present in an area. Enable ClientLink if using 802.11n capable access points. CleanAir should be enabled if using capable access points (i.e. Cisco Aironet 3500 Series). Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 52: Edca Parameters

    In the DFS (802.11h) configuration, channel announcement and quite mode should be enabled. Power constraint should be left un-configured or set to 0 dBm as DTPC will be used by the Cisco Unified IP Phone 9971 to control the transmission power.

  • Page 53: Call Admission Control Settings

    Roaming clients are not limited to using the reserved roaming bandwidth, but is to reserve some bandwidth in case all other bandwidth is utilized. Will want to ensure load-based CAC is enabled, which is available in the 4.1 release for the Cisco Unified Wireless LAN Controller, but not currently available on the autonomous access point platform.
  • Page 54 Call Admission Control for Video should be disabled. After enabling Call Admission Control, the following configuration should be enabled, which can be displayed in the “show run-config”. Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...
  • Page 55 Also ensure that the PHY rate configured on the Cisco Unified IP Phone 9971 is enabled as a nominal rate in the STREAM configuration of the autonomous access point. Recommend to use the defaults, where 5.5, 6.0, 11.0, 12.0 and 24.0 Mbps are enabled as nominal rates for 802.11b/g and 6.0, 12.0 and 24.0 Mbps enabled for 802.11a.

  • Page 56: Configuring Qos Basic Service Set (Qbss)

    There are three different versions of QoS Basic Service Set (QBSS) that the Cisco Unified IP Phone 9971 supports. The first version from Cisco was on a 0-100 scale and was not based on clear channel assessment (CCA), so it does not account for channel utilization, but only the 802.11 traffic traversing that individual access point’s radio.

  • Page 57: Configuring Auto-Immune

    Configuring the WLAN Controller EAP-Request and EAPOL-Key Timeouts If using EAP, the EAP-Request Timeout on the Cisco Unified Wireless LAN Controller should be set to at least 20 seconds. In later versions of Cisco Unified Wireless LAN Controller software, the default EAP-Request Timeout was changed from 2 to 30 seconds.

  • Page 58: Configuring Proxy Arp

    To view the EAP configuration on the Cisco Unified Wireless LAN Controller, telnet or SSH to the controller and enter the following command. (Cisco Controller) >show advanced eap EAP-Identity-Request Timeout (seconds)... 30 EAP-Identity-Request Max Retries....2 EAP Key-Index for Dynamic WEP....0 EAP Max-Login Ignore Identity Response...

  • Page 59: Configuring Tkip Countermeasure Holdoff Time

    When this occurs, the Access Point will de-authenticate all TKIP clients associated to that 802.11 radio and holdoff any clients for the countermeasure holdoff time (default = 60 seconds). To change the TKIP countermeasure holdoff time on the Cisco Unified Wireless LAN Controller, telnet or SSH to the controller and enter the following command: (Cisco Controller) >config wlan security tkip hold-down <nseconds>...

  • Page 60: Configuring The Cisco Unified Ip Phone 9971

    Configuring the Cisco Unified IP Phone 9971 To configure the network settings on the Cisco Unified IP Phone 9971, use the keypad and menus on the phone by navigating to Applications Button > Administrator Settings > Network Setup > WLAN Setup.
  • Page 61 AKM mode will use LEAP as the 802.1x method. WEP128 is listed as WEP104 on the Cisco Unified Wireless LAN Controllers. For more information, refer to the “Configuring Settings on the Cisco Unified IP Phone 9971” in the Cisco Unified IP Phone 9971 Administration Guide at this URL: http://www.cisco.com/en/US/products/phones/ps10453/prod_maintenance_guides_list.html...

  • Page 62: Bluetooth Configuration

    The Cisco Unified IP Phone 9971 supports Bluetooth 2.1 to allow wireless headset communications. Currently only the headset profile is supported. To pair a Bluetooth headset to the Cisco Unified IP Phone 9971, follow the instructions below. 1. Navigate to Applications > Preferences 2.
  • Page 63 Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 64: Camera Configuration

    Camera Configuration When the Cisco Unified Video Camera is connected, ensure that it appears in the Accessories menu list. Once discovered, then a few items can be configured (Auto Transmit Video, Brightness, View Area). Auto Transmit Video determines if the phone is to start streaming video immediately at the beginning of the call or not assuming the far end device has video capabilities.

  • Page 65: Upgrading Phone Firmware

    Cisco Unified Communications Manager device load takes precedence over the TFTP firmware version. The Load Server can be specified as an alternate TFTP server to retrieve firmware files in the Cisco Unified IP Phone 9971 product specific configuration in Cisco Unified Communications Manager Administration.

  • Page 66: Troubleshooting

    Current Access Point The Cisco Unified IP Phone 9971 will only show the current access point (no neighbor list). To view go to the Applications Button > Administrator Settings > Status > Current Access Point. The Cisco Unified IP Phone 9971 is constantly scanning regardless of current signal or call state to discover new access points.

  • Page 67: Traffic Stream Metrics (Tsm)

    “Call Admission Control Settings” section for further information on how to enable TSM. To view Traffic Stream Metrics data for a client, select TSM from the drop down menu for which band the Cisco Unified IP Phone 9971 is using.

  • Page 68: Phone Logs

    Select one of the entries to display the uplink and downlink statistics. Phone Logs Phone logs for troubleshooting purposes can be obtained from the Cisco Unified IP Phone 9971 web interface. Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 69: Wlan Status Indicator

    For more information, refer to the Cisco Unified IP Phone 9971 Administration Guide at this URL: http://www.cisco.com/en/US/product/phones/ps10453/prod_maintenance_guides_list.html WLAN Status Indicator As of the 9.0(2) release, the WLAN status indicator will be visible in all menus within Administrator Settings. In the initial release, the WLAN status indicator was only visible in the WLAN Setup menu.

  • Page 70: Wlan Disconnect Display

    The current display can be captured by browsing to http://x.x.x.x/CGI/Screenshot, where x.x.x.x is the IP address of the Cisco Unified IP Phone 9971. At the prompt enter the username and password for the account for which the phone is associated to.
  • Page 71 Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...

  • Page 72: Additional Documentation

    Additional Documentation Cisco Unified IP Phone 9971 Data Sheet http://www.cisco.com/en/US/products/ps10453/products_data_sheets_list.html Cisco Unified IP Phone 9971 Administration Guide http://www.cisco.com/en/US/products/phones/ps10453/prod_maintenance_guides_list.html Cisco Unified IP Phone 9971 Phone Guide and Quick Reference http://www.cisco.com/en/US/products/phones/ps10453/products_user_guide_list.html Cisco Unified IP Phone 9971 Firmware http://www.cisco.com/cgi-bin/tablebuild.pl/ip-7900ser-crypto Cisco Unified Communications Manager http://www.cisco.com/en/US/products/sw/voicesw/ps556/tsd_products_support_series_home.html...
  • Page 73 Open Source License Notices for the Cisco Unified IP Phones 7900 Series http://www.cisco.com/en/US/products/phones/ps10453/products_licensing_information_listing.html Cisco Unified IP Phone 9971 Wireless LAN Deployment Guide...
  • Page 74 CCDE, CCENT, Cisco Eos, Cisco Lumin, Cisco Nexus, Cisco StadiumVision, Cisco TelePresence, Cisco WebEx, the Cisco logo, DCE, and Welcome to the Human Network are trademarks; Changing the Way We Work, Live, Play, and Learn and Cisco Store are service marks; and Access Registrar, Aironet, AsyncOS, Bringing the Meeting To You, Catalyst, CCDA, CCDP, CCIE, CCIP,...

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