[cisco-voip] PVDMs, DSP farms, et al.... next steps?

Erick Wellnitz ewellnitzvoip at gmail.com
Wed Apr 25 10:50:38 EDT 2012 

I'm not aware of a command to see all the PVDM channels provisioned.

On Wed, Apr 25, 2012 at 9:27 AM, Lelio Fulgenzi <lelio at uoguelph.ca> wrote:

>  Any idea if there is a command that you can use to show what DSP
> resources have been reserved for this?
>
> ---
> Lelio Fulgenzi, B.A.
> Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
> (519) 824-4120 x56354 (519) 767-1060 FAX (ANNU)
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Cooking with unix is easy. You just sed it and forget it.
>                               - LFJ (with apologies to Mr. Popeil)
>
>
> ------------------------------
> *From: *"Erick Wellnitz" <ewellnitzvoip at gmail.com>
> *To: *"Lelio Fulgenzi" <lelio at uoguelph.ca>
> *Cc: *"ccieid1ot" <ccieid1ot at gmail.com>, "cisco-voip voyp list" <
> cisco-voip at puck.nether.net>
> *Sent: *Wednesday, April 25, 2012 10:24:05 AM
> *Subject: *Re: [cisco-voip] PVDMs, DSP farms, et al.... next steps?
>
> In my experience I have never been able to 'oversubscribe' DSP resources
> so that is true.  I believe, and someone please correct me if I am off on
> this, DSPs are 'reserved' when the T1/PRI interface is turned up.  So, if
> you had an interface configured as a 'hot' standby in case your primary PRI
> port goes bad, it would use DSP resources.
>
> Think of the consequences of being able to do overprovision.  If you have
> conferencing, MTP, transcoding and 8 PRIs configured and all of your DSPs
> are in use for conference and MTP, you are going to be in trouble when
> people start complaining they can't make or receive calls to/from the PSTN.
>
>
>
> On Wed, Apr 25, 2012 at 8:51 AM, Lelio Fulgenzi <lelio at uoguelph.ca> wrote:
>
>>  Thanks for this. A couple of more questions:
>>
>> I read that you have to have enough DSP resources for all your voice
>> ports (T1s in particular) and you can't overprovision. Just wondering the
>> validity of this statement (from NetPro post) and whether this is for cards
>> that are inserted, or turned up.
>>
>> Also, with respect to codecs, can you configure different codecs on the
>> same DSP? It talks about FLEX for the PVDMs, and I'm just wondering if
>> that's the best approach.
>>
>> Thanks again for everyone's help.
>>
>> Lelio
>>
>>
>> ---
>> Lelio Fulgenzi, B.A.
>> Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
>> (519) 824-4120 x56354 (519) 767-1060 FAX (ANNU)
>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>> Cooking with unix is easy. You just sed it and forget it.
>>                               - LFJ (with apologies to Mr. Popeil)
>>
>>
>> ------------------------------
>> *From: *"ccieid1ot" <ccieid1ot at gmail.com>
>> *To: *"Lelio Fulgenzi" <lelio at uoguelph.ca>
>> *Cc: *"cisco-voip voyp list" <cisco-voip at puck.nether.net>
>> *Sent: *Tuesday, April 24, 2012 6:38:47 PM
>> *Subject: *Re: [cisco-voip] PVDMs, DSP farms, et al.... next steps?
>>
>> *can i go without it? do i need it for conferencing/xcoding/MTP?*
>> No, Yes
>>
>> *when enabling dsp farm'ing, i can see a couple of examples which state
>> "voice-card 0" what is this voice-card 0? is this the motherboard? is this
>> the DSP chip itself?*
>> PVDM2/3 modules installed in the slot on the motherboard.
>>
>> *if i install another DSP chip, would I see "voice-card 1"  *
>> If you insert a NM-HDV2 in slot 1, that would be configured as
>> "voice-card 1".  Answer is no.
>>
>>
>>
>>
>> On Tue, Apr 24, 2012 at 3:16 PM, Lelio Fulgenzi <lelio at uoguelph.ca>wrote:
>>
>>>  ok, that last document didn't help much either.
>>>
>>> so here's a couple of general questions:
>>>
>>> where/when do i need dsp farm'ing? can i go without it? do i need it for
>>> conferencing/xcoding/MTP?
>>>
>>> when enabling dsp farm'ing, i can see a couple of examples which state
>>> "voice-card 0" what is this voice-card 0? is this the motherboard? is this
>>> the DSP chip itself? if i install another DSP chip, would I see "voice-card
>>> 1"
>>>
>>> thanks everyone!
>>>
>>>
>>> ---
>>> Lelio Fulgenzi, B.A.
>>> Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
>>> (519) 824-4120 x56354 (519) 767-1060 FAX (ANNU)
>>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>> Cooking with unix is easy. You just sed it and forget it.
>>>                               - LFJ (with apologies to Mr. Popeil)
>>>
>>>
>>> ------------------------------
>>> *From: *"Lelio Fulgenzi" <lelio at uoguelph.ca>
>>> *To: *"cisco-voip voyp list" <cisco-voip at puck.nether.net>
>>> *Sent: *Tuesday, April 24, 2012 4:55:29 PM
>>> *Subject: *Re: PVDMs, DSP farms, et al.... next steps?
>>>
>>>
>>> well, i read the first two docs i mentioned, and, i'm not too further
>>> along. looks like there's one more i should look at:
>>>
>>>
>>> http://www.cisco.com/en/US/customer/docs/routers/access/1900/software/configuration/guide/pvdm3_config_ps10538_TSD_Products_Configuration_Guide_Chapter.html
>>>
>>> hopefully this one will help.
>>>
>>> ---
>>> Lelio Fulgenzi, B.A.
>>> Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
>>> (519) 824-4120 x56354 (519) 767-1060 FAX (ANNU)
>>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>> Cooking with unix is easy. You just sed it and forget it.
>>>                               - LFJ (with apologies to Mr. Popeil)
>>>
>>>
>>> ------------------------------
>>> *From: *"Lelio Fulgenzi" <lelio at uoguelph.ca>
>>> *To: *"cisco-voip voyp list" <cisco-voip at puck.nether.net>
>>> *Sent: *Tuesday, April 24, 2012 1:26:55 PM
>>> *Subject: *PVDMs, DSP farms, et al.... next steps?
>>>
>>> Hi all,
>>>
>>> I'm in the process of migrating from 6608s to 3945s. I've got all the
>>> pieces and I'm just wondering about next steps.
>>>
>>> I've found the following documents:
>>>
>>> http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/7x/media.pdf
>>>
>>>
>>> http://www.cisco.com/en/US/docs/ios-xml/ios/voice/cminterop/configuration/15-1mt/vc-enh-confr-vgr.pdf
>>>
>>> But I'm wondering if there are any others people can recommend.
>>>
>>> Also, if there are any hints or recommendations on going forward, that
>>> too would help.
>>>
>>> I'll have two 3945s, each with a PVDM-256 installed that I need to use
>>> for 8 T1s into each router, and for conferencing mainly. But I'll also want
>>> to try and do some transcoding if possible.
>>>
>>> Thanks, Lelio
>>>
>>>
>>>
>>>
>>> ---
>>> Lelio Fulgenzi, B.A.
>>> Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
>>> (519) 824-4120 x56354 (519) 767-1060 FAX (ANNU)
>>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>> Cooking with unix is easy. You just sed it and forget it.
>>>                               - LFJ (with apologies to Mr. Popeil)
>>>
>>>
>>>
>>> _______________________________________________
>>> cisco-voip mailing list
>>> cisco-voip at puck.nether.net
>>> https://puck.nether.net/mailman/listinfo/cisco-voip
>>>
>>>
>>
>>
>> --
>> duy
>> CCIE #27737 Voice
>>
>>
>> _______________________________________________
>> cisco-voip mailing list
>> cisco-voip at puck.nether.net
>> https://puck.nether.net/mailman/listinfo/cisco-voip
>>
>>
>
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