DSP and Digital module

[Ahmed Zein]

Hello buddies;

i have some questions related to DSPs

1-DSP mandatory if i use analog module, like FXS or FXO? right?

2-for Digital modules like T1E1 Multiflex voice card , is DSP mandatory?

3-is this module "T1E1 Multiflex" contain a separate DSP itself?, i.e the module board have its DSP which can handle call processing and transcoding?

also the same question for these modules "E1/T1 ISDN PRI module", and "DigitalE1/T1 Voice Trunk module"

[acampbell · Accepted solution]

Ahmed,

I think you need to look at the DSP Calculator tools

http://www.cisco.com/cgi-bin/Support/DSP/dsp-calc.pl

Includes older routers like 1760 etc

http://www.cisco.com/web/applicat/dsprecal/dsp_calc.html

For new kit like 2900

HTH

Alex

[Ahmed Zein]

Thanks Acambell, but i already know this tool

and as overall i am confused about DSP and its support to these digital modules, so i need to arrange my thinking

could you please help me and answer my question to get me out of this confussion, please

and please answer in 1 2 3 schema, again thanks for your interest

[clileikis · Accepted solution]

Hi Ahmed,

As Alex mentioned, check out the DSP calculator and spend some time with it (+5 Alex).  It will give you all the DSP's required based on your requirements (such as FXS/FXO/T1's, etc)

To answer your questions, yes, you need DSP's for FXS/FXO's, yes you would need DSP's for T1/E1 PRI's, and no the T1/E1's do not contain DSP's themselves.  You need to either insert them on the motherboard or purchase a network module and place them on there.

HTH,

Chris

[Ahmed Zein]

i love you guies

[Ahmed Zein]

i have another confusing point:

1-what is

NM-2V

and

NM-HDV

and

NM-2HDV

"what is the difference bet each one??

??

2-and how to know that router has each of them??

3-and what is the type of these NM can contain FXS moule?

4-How to get these info from the router, CLI, model??

[Ahmed Zein]

DSP and Digital module

i have another confusing point:

1-what is

NM-2V

and

NM-HDV

and

NM-2HDV

"what is the difference bet each one??

??

2-and how to know that router has each of them??

3-and what is the type of these NM can contain FXS moule?

4-How to get these info from the router, CLI, model??

[dkemp]

Ahmed,

    In ref to 2 & 4 - To find out what you have via CLI, use "show inventory" or "show diag"

NM-HDV2

http://www.cisco.com/en/US/customer/prod/collateral/routers/ps259/product_data_sheet09186a00800921e7_ps2797_Products_Data_Sheet.html

NM-HDV

http://www.cisco.com/en/US/customer/tech/tk652/tk701/technologies_tech_note09186a00800b65d6.shtml

NM-2V

http://www.cisco.com/en/US/customer/products/hw/modules/ps2617/products_tech_note09186a0080094ac0.shtml

Difference is HDV2 is the new replacement for the older NM-HDV the NM-2v is more orientated to FXO/FXS a couple of ports (replaced by HD-HD-2v)

NM-HDV2 provide far higher density for DSP's for bulk call handeling, I use PVDM2-64's supporting 256 calls per NM-HDV2

Cheers

Dave