[cisco-voip] using my DSPs on a 3845

[Lelio Fulgenzi]

OK. I'll plan to do that sometime.

What does that do? Basically open up the DSPs for individual usage and assignment?

Does that then allow me to add the "codec complexity flex" command? or is that on by default as I suggested?


  ----- Original Message ----- 
  From: Ryan Ratliff 
  To: Lelio Fulgenzi 
  Cc: Cisco VoIPoE List 
  Sent: Friday, January 25, 2008 4:42 PM
  Subject: Re: [cisco-voip] using my DSPs on a 3845


  voice-card 0
   no dspfarm


  That needs to be corrected first.  Either the command 'dspfarm' or 'dsp services dspfarm' needs to be present as the first step.  




  -Ryan



  On Jan 25, 2008, at 4:24 PM, Lelio Fulgenzi wrote:


  OK - now I'm worried.....

  kc-vgw(config)#dspfarm profile 105 conference
  kc-vgw(config-dspfarm-profile)#maximum sessions ?
    <0-0>  Number of sessions assigned to this profile


  This doesn't seem to make sense to me.

  When I ran/run the DSP calc (see below), it says I that one PVDM64 should suffice (using the optimized result). When I tried adding the CLI suggestion, I'm pretty sure it didn't make any difference in the show running, which I was told because it was the default.

        Optimal Results 
        voice-card 0 
               codec complexity flex 

        What I have:

        voice-card 0
         no dspfarm
        !



       


----------------------------------------------------------------------------

          DSP Requirements 
          
                  Onboard CLI Information 

----------------------------------------------------------------
                Optimized Result(Default) 
----------------------------------------------------------------
                3 DSP(s). 
                one PVDM2-48 

                or
                one PVDM2-16 + one PVDM2-32 CLI Info 

----------------------------------------------------------------
                Normal Result 
----------------------------------------------------------------
                6 DSP(s). 
                one PVDM2-32 + one PVDM2-64 

                or
                two PVDM2-48 

                or
                three PVDM2-32 CLI Info 

----------------------------------------------------------------
                Worst Case Result 
----------------------------------------------------------------
                N/A 
----------------------------------------------------------------
                N/A 
         


----------------------------------------------------------------------------

    ----- Original Message -----
    From: Ryan Ratliff
    To: Lelio Fulgenzi
    Cc: Cisco VoIPoE List
    Sent: Friday, January 25, 2008 3:24 PM
    Subject: Re: [cisco-voip] using my DSPs on a 3845


    It gets a little murky with the flex DSPs and how many are required depend on what voice codecs are being used.


    Your best bet is to configure a sccp profile for either conference or transcode.  See what the 'max-sessions' command will allow you to set.  If you have enough free DSPs then when you do 'max-sess ?' the result will include a non-zero number, ie '0-10' or similar instead of '0-0'.


    Yes you do need to add a CFB in CM with a name that matches whatever you set in the 'register' command under the sccp profile on the router.


    -Ryan


    On Jan 25, 2008, at 3:20 PM, Lelio Fulgenzi wrote:


    I've got a 3845 with a PVDM2-64 as far as I can tell. Well, that's what I ordered and I trust Cisco! A "show voice dsp" shows the following:
      DSP   DSP              DSPWARE CURR  BOOT                         PAK   TX/RX
      TYPE  NUM CH CODEC     VERSION STATE STATE   RST AI VOICEPORT TS ABRT PACK COUNT
      ===== === == ========= ======= ===== ======= === == ========= == ==== ============
      C5510 001 01 g711ulaw    9.2.2 busy  idle      0  0 0/0/0:23  23    0  11621/11516
      C5510 001 02 g711ulaw    9.2.2 busy  idle      0  0 0/1/0:23  22    0  63104/64754
      C5510 001 03 g711ulaw    9.2.2 busy  idle      0  0 0/0/0:23  07    0    4906/4634
      C5510 001 04 None        9.2.2 idle  idle      0  0                 0          0/0
      <snip>
      C5510 004 15 None        9.2.2 idle  idle      0  0                 0          0/0
      C5510 004 16 None        9.2.2 idle  idle      0  0                 0          0/0
      ------------------------END OF FLEX VOICE CARD 0 ----------------------------
    I gather that each DSP can handle 16 voice calls, so if I have two T1s = 23 calls * 2 (each has their own Dchannel)=46 calls / 16 = 2.875.

    So that means three DSPs are required to handle my voice calls and I have one left for conferencing.

    Do I just create a DSP farm with one DSP and somehow assign it as a conference resource in Call Manager?

    Lelio
    --------------------------------------------------------------------------------
    Lelio Fulgenzi, B.A.
    Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
    (519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
    "Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo."      WJR

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