Cisco IP phones (7940 and 7960) and broadcast problems

Discussion in 'VOIP' started by Jii, Oct 15, 2003.

  1. Jii

    Jii Guest


    Has anyone else noticed that Cisco 7940 and 7960 phones might have
    some problems when there a many broadcast packets flowing through its
    switch ports?

    Many meaning 100-300 packets per second.

    Even with separate VLAN for voice traffic, the broadcasts in the pc
    VLAN seem to affect the switch in the phone.

    Phone becomes slow, unresponsive and call quality gets bad.

    Jii, Oct 15, 2003
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  2. Jii

    shido Guest

    You may want to look into using Asterisk as your callmanager.

    Greg Merriweather
    The NuFone Network

    519-251-8225 x 3000
    shido, Oct 15, 2003
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  3. Why is this a solution to the question ?

    Arnold Ligtvoet, Oct 15, 2003
  4. Jii

    shido Guest

    Never ran into this issue with Asterisk. Phone registers to the linux box
    with asterisk on it and I make phone calls to other softphones/ip phones or
    the PSTN via IAX2 according to the dialplan I've set... and I'm nat'd.

    Greg Merriweather
    The NuFone Network

    519-251-8225 x 3000
    shido, Oct 16, 2003
  5. Oke, this is new. I looked at the Asterisk website but did not see
    specific support for the Cisco phones. Let me get this correct: what you
    are saying is that 7960/40 Cisco phones work on Asterisk when set to SIP

    Are all (or most) features supported on the phone?


    Arnold Ligtvoet, Oct 16, 2003
  6. Jii

    Shaun Ewing Guest

    Correct. I've got an Asterisk system in production here with 7960 and 7940
    I've yet to run into a feature that is unsupported - so yep :)
    Shaun Ewing, Oct 17, 2003
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