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  1. Senior Member
    Join Date
    Mar 2007
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    CCNA,CCNP, CCDP,CCNA-Voice,Security +, A+
    #1

    Default A question about voice vlan

    will the command

    Code:
    switchport voice vlan "vlan number"
    be useful when connecting the cisco switch to a non cisco phone?
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  2. Cisco Moderator mikej412's Avatar
    Join Date
    May 2005
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    Chicago
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    CCNP CCIP CCSP CCVP CCDP CCDA CCNA CS-CIPSS CS-CIPTDS CS-CIPTOS CS-CIPCSS CS-CFWS CS-CVPNS CS-CISecS ISSP 4013 4011
    #2
    Depends on whether the vendor's phones support Cisco's CDP protocol -- some do.

    If they don't you may be manually configuring the phones and manually configuring a trunk on the switch port to allow only voice vlan and data vlan traffic (for an attached PC) over the trunk.
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