atcomsystems.ca/forum Forums TDM Business Telephone Systems Avaya - Lucent Telephones & Systems VCM Question

On an IP Office SBO unit there are THREE VCM for voip support. My question is what services specifically use those VCM's?

For example:

One VM box
One VPN tunnel
One Ip phone

Running or being checked concurrently will work correct? But how do I know when the three VCM's are a problem? Is there a rule of thumb? Reason I ask is because you can't upgrade a SBO unit and i want to make sure.

Thanks!!

Michael

If you have embedded voicemail on the small office edition, a VCM channel is used for each port of voice mail. This only applies to the embedded voicemail.

Other times when a VCM channel is used are the following:
IP phone to POTS/PRI/BRI line call.
Digital/Analog phone to IP phone call.
Call from SOE system to remote system via IP trunk.
IP phone to IP phone call without direct media path selected.

IP phone to IP phone call WITH direct media path uses a VCM channel only during call setup and then releases the channel when the two phones are connected to each other.

What do you mean when you say that you cant upgrade an SBO unit? Are you talking you cant upgrade the VCM's in a small office? Correct, but you can buy a larger SOE that has more VCM's in it.

That's what I need to know thanks. Yes it is embedded voice mail.

What I meant was you can't upgrade the number of VCM's on a SBO unit, you have to buy a bigger SBO unit with more VCM's to get additional VCM's.

Thanks!!
Mike

They make two versions of the SOE. One with 3 VCM's and one with 16 VCM's