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AMA-CUCM Troubleshooting: Best Practices for Reading Trace Files

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Beginner

BE4K - PVDM Requriement

Hello,

 

We just tried installing a BE4K with a T1/E1 Card. However, keeps throwing an error . TAC states that an additional PVDM Card is required for the T1/E1 card in addition to the on board PVDM. 

 

TAC reply - 

BE4K ships with PVDM4-64 on motherboard and must remain on the motherboard. You need a total of 2 PVDM4 modules.  One goes on the motherboard and one goes on the NIM T1/E1 card.  Won't be able to configure without both.

 

Can someone confirm this or am I missing something. 

 

 

8 REPLIES 8
Participant

Re: BE4K - PVDM Requriement

Hi @harikeshan

 

It's correct. Same thing for cisco routeur series 4000.

The optional BE4000 Digital Multiflex Trunk (MFT) modules require the appropriate Cisco Packet Voice Digital Signal Processor Module 4 (PVDM4). For more information on the E1/T1 PVDM4 and configuration requirements, see https://www.cisco.com/c/en/us/support/docs/routers/4000-series-integrated-services-routers/118792-config-isr-00.html.

 

Data sheet here:

https://www.cisco.com/c/en/us/products/collateral/routers/4000-series-integrated-services-routers-isr/data_sheet_c78-728307.pdf

 

 

 

Best regards
******* If This Helps, Please Rate *******
Ben
Advisor

Re: BE4K - PVDM Requriement

Hi,

 

I checked the BE4K datasheet which says

The optional BE4000 Digital Multiflex Trunk (MFT) modules listed in the table require the appropriate Cisco Packet Voice Digital Signal Processor Module 4 (PVDM4). 

https://www.cisco.com/c/en/us/products/collateral/unified-communications/business-edition-4000/datasheet-c78-738497.html

 

You can check the table in Datasheet under Ordering Information.

 

regds,

aman

 

Highlighted
Hall of Fame Master

Re: BE4K - PVDM Requriement

Aman is correct (+5), see the following note in the link he provided:

 

There is only one PVDM slot on the motherboard. The Time Division Multiplexing (TDM) cards can not use the motherboard PVDMs. Dependent upon the number of channels required, the appropriate DSP module is installed on the NIM. For IP services such as to transcode and conference, the PVDM4 DSP module can be installed on the motherboard of the ISR 4000 Series platform.

Participant

Re: BE4K - PVDM Requriement

Hi @harikeshan

 

@Chris Deren is correct +5

@Aman Soi is correct +5

I was not so far...

Just check the different post with the data sheets proposal.

Best regards
******* If This Helps, Please Rate *******
Ben
Beginner

Re: BE4K - PVDM Requriement

Thank you All for your valuable inputs. Hopefully, this would be the last such oversight.

Participant

Re: BE4K - PVDM Requriement

Hi.

Quick question...

We are currently on ISDN with PVDMs on the NIM slot.

We are migrating our voice to SIP Trunk. Can I use the existing PVDMs on the NIM or do I need to purchase/reinstall the PVDMs on the motherboard for SIP Voice?

We need it for transcoding and conference service.

 

Thanks

Peter

Cisco Employee

Re: BE4K - PVDM Requriement

Suggest you to move it to motherboard if NIM won't be used anymore.

Nipun Singh Raghav
"We cannot solve our problems with the same thinking we used when we created them"
Hall of Fame Master

Re: BE4K - PVDM Requriement

Few things to consider:

1. SIP trunk calls for the most part do not require DSPs as they are voip to voip calls, with that being said depending on your call flows, region configuration and applications used it is a good idea to allocate some transcoders for when they are needed, plus you can also use them for hardware conferencing.

2. PVDMs from NIM can be used as as media resources just fine, so as long as you remove your PRI configuration you can release the PVDMs to be configured. You can if you want to move the module to the single PVDM4 slot on the motherboard and remove the NIM.

For future reference the PVDMs from NIM can be used for media resources, but not the other way around, i.e. you cannot use motherboard PVMDs for NIM PRIs.

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