Wireless Access

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Access network design for branch, remote, outdoor and campus locations with Aruba access points, and mobility controllers.
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VOICE PROBLEMS NORTEL

  • 1.  VOICE PROBLEMS NORTEL

    Posted Mar 01, 2013 04:03 PM

    Hello,

     

    i have issues in the VoWLAN, i have an SSID and VLAN end to end only for Voice.

    The issues is when im talking over the WLAN the voice goes the volume down and then up, when im roaming and when im static.

    The PBX is BCM450         release 6.0

    The phones im using is model 6120 y 2212 and a WLAN manager 2245 function as a proxy all the Wireless phone register in this wireles manager proxy.

     

    I create roles, QoS and everything to work fine, but sometimes i notice the phones had disconected from the PBX and again it register back to the pbx

     

    user-role voice
     session-acl sip-acl
     session-acl noe-acl
     session-acl svp-acl
     session-acl vocera-acl
     session-acl skinny-acl
     session-acl dhcp-acl
     session-acl tftp-acl
     session-acl dns-acl
     session-acl icmp-acl
     session-acl h323-acl

     

    interface vlan 10
    	ip address 10.41.6.11 255.255.255.0

     

    voip prioritization enable
    voip rtcp-inactivity disable
    voip sip-midcall-req-timeout disable

     

    aaa profile "voz"
       initial-role "voice"

     

    ap wired-ap-profile "HACIENDA"
       switchport access vlan 10
       trusted

     

    wlan ssid-profile "HACIENDA"
       essid "LA HACIENDA"
       opmode static-wep
       g-basic-rates 1 2 11 18 36 54
       wepkey1 cb91560e12fb62a41e5d6054121e6a876b635bac

     

    wlan virtual-ap "HACIENDA"
       aaa-profile "voz"
       ssid-profile "HACIENDA"
       vlan 10
       vlan-mobility

     

     

    How can i troubleshoot this??



  • 2.  RE: VOICE PROBLEMS NORTEL

    Posted Mar 02, 2013 02:09 AM

    You need to turn on user debug to see what the phone is doing.

     

    You also need to look at the Nortel Deployment guide for your phone.  Depending on the phone, it will require ARM Min 12 and ARM max 18 TX power so that the AP's power matches that of the phone.  In addition, a VOIP deployment will require more density than a regular data network (sometimes an AP every 50 feet) otherwise you will hear drops on the roams.  You need to obtain the manufacturer's deployment instructions, because it is crucial..

     

     



  • 3.  RE: VOICE PROBLEMS NORTEL

    Posted Mar 02, 2013 02:59 AM

    what command is useful for the user debug?

     



  • 4.  RE: VOICE PROBLEMS NORTEL

    Posted Mar 02, 2013 08:02 AM

    1.  Get a syslog server

    2.  Point the aruba controller to that syslog server (config t logging <ip address of sever)

    3.  turn on user debugging <config t logging level debug user-debug>