[cisco-voip] PVDM

[Brian Meade]

One thing to be aware of is some distributors will give you two 16 cards
rather than one 32 when you buy the upgrade SKU.  Make sure to specifically
request a single PVDM so that you can easily add another PVDM to the spare
slot eventually when needed.


On Wed, May 21, 2014 at 3:57 AM, James Buchanan
<james.buchanan2 at gmail.com>wrote:

> Exactly. However, you may want to price adding the 64-channel versus
> upgrading the 16 to a 64 and adding a 32. It'll probably be close in price,
> but just compare. An alternative would be to just upgrading the 16 to a
> 128, and that would leave you a free slot for more DSPs in the future.
>
>
> On Wed, May 21, 2014 at 9:53 AM, Abebe Amare <abucho at gmail.com> wrote:
>
>> Thanks James for the explanation.
>> From your reply I understand that I have a 32 channel DSP on the
>> PVDM3-16U32. If I purchase a PVDM3-64, on top of the existing one, I will
>> have 96 channels. Is that correct?
>>
>> best regards,
>>
>> Abebe
>>
>> On Wed, May 21, 2014 at 10:22 AM, James Buchanan <
>> james.buchanan2 at gmail.com> wrote:
>>
>>>   Hello,
>>>
>>> They are taking the 16-channel DSP and upgrading it to 32-channels.
>>>
>>> The number of DSP channels you need depending on how many channels of
>>> the PRI you intend to use, plus conferencing and transcoding. This
>>> particular VWIC card can do 60 channels as an E1 and 48 channels as a T1.
>>> Do you intend to configure two PRIs? If so, you need one DSP channel per
>>> T1/E1 channel as a minimum. I would recommend upgrading the 32 channels to
>>> a minimum of 96 channels so that you have enough resources for both T1/E1
>>> ports plus transcoding and conferencing.
>>>
>>> Now, the number of DSP channels also depends on what codec you intend to
>>> use. For example G.729 is a high-density codec, meaning that more DSP
>>> channels might be required for transcoding. G.729b does not use as many DSP
>>> channels.
>>>
>>> I hope this helps!
>>>
>>> James
>>>
>>>
>>>  On Wed, May 21, 2014 at 9:14 AM, Abebe Amare <abucho at gmail.com> wrote:
>>>
>>>>  Hi everyone,
>>>>
>>>> The following is a snippet from the detail order for Cisco 2901 voice
>>>> router:
>>>>
>>>> 1. C2901-CME-SRST/K9 - 2901 Voice Bundle w/ PVDM3-16,FL-CME-SRST-25,
>>>> UC License PAK
>>>> 2. PVDM3-16U32 - PVDM3 16-channel to 32-channel factory upgrade
>>>>
>>>> What does the PVDM3-16U32 mean? is it a separate PVDM or license? also
>>>> if I want to purchase a VWIC3-2MFT-T1/E1, what is the PVDM3 type I have to
>>>> get? (I dont have the right login credentials to use DSP calculator)
>>>>
>>>> best regards,
>>>>
>>>> Abebe
>>>>
>>>>
>>>>
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>>>>
>>>>
>>>
>>
>
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