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New Member

Media Resource selection - Conference bridge in VG and CUCM

Hi everybody,

If my concept is correct ...

conference bridge can be created in VG via DSP farm profile (that is hardware based)

conference bridge has been created in CUCM by default (that is software based)

In CUCM, the media resource group can select the above 2 conference bridges

My question is what is the difference between VG's CFB and CUCM's CFB ?

Should I just select either one of them?

Thank you

Sam

Everyone's tags (3)
1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Media Resource selection - Conference bridge in VG and CUCM

If you need to mix different codecs then you want to use the HW CFB and configure the dspfarm accordingly.

It really goes down to these 3 factors, PDVM2 or PVDM3, number of conferencees and codecs being used.

SW CFB can handle 128 streams between all conferences (ad-hoc/meetme) and one single conference can be up to 64 conferencees.

PVDM2 can handle up to 32 in G711 conference, 16 in G729 and 8 when mixing other codecs.

PDVM3s are different as they can handle up to 64 conferencees on G711.

You may want to read the media resources chapter from SRND.

HTH

java

if this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
4 REPLIES
Hall of Fame Super Silver

Media Resource selection - Conference bridge in VG and CUCM

Software bridges support only G711 codec and put stress on CPU.

Chris

New Member

Media Resource selection - Conference bridge in VG and CUCM

So do you mean it is recommended to use the VG's CFB ? for reducing the CUCM loading ?

Cisco Employee

Media Resource selection - Conference bridge in VG and CUCM

If you need to mix different codecs then you want to use the HW CFB and configure the dspfarm accordingly.

It really goes down to these 3 factors, PDVM2 or PVDM3, number of conferencees and codecs being used.

SW CFB can handle 128 streams between all conferences (ad-hoc/meetme) and one single conference can be up to 64 conferencees.

PVDM2 can handle up to 32 in G711 conference, 16 in G729 and 8 when mixing other codecs.

PDVM3s are different as they can handle up to 64 conferencees on G711.

You may want to read the media resources chapter from SRND.

HTH

java

if this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
Hall of Fame Super Silver

Media Resource selection - Conference bridge in VG and CUCM

Yes, I only use software bridges as backup and only ensure local gateways are sized to provide hardware media resources.

HTH,

Chris

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