PVDM in CME 2811 and CUCM 11

[nawir]

Dear all,

I have Cisco Router 2811 with 768MB DRAM, 512MB Flash, 2 FXS and 2 FXO.

QUESTIONS:

1. If I want to use latest CME (I think ver 10)

Do I need to buy PVDM for IP Telephoney

If yes, how big should I buy.

Is it 1x 48Channel or 2x32Channel

2. Can I mix between 32 and 48Channel

3. In eBay I saw Cisco PVDM2-8 GENUINE 8-Channel Packet Voice Fax DSP Module.

Is 8 Channel mean 8 concurrent call

4. Without PVDM, can I still send and receive fax?

5. What's new feature in CUCM 11

thanks

[Jaime Valencia · Accepted solution]

1 Assuming you're going to use TDM, yes, you need PVDMs

The size of the PVDM?? depends on what TDM interface(s) you will use

2 yes

3 Assuming you use G.711, yes, those are 8 channels

4 No, unless it's pure IP faxing, if you want to use a fax machine plugged into an FXS, you need PVDMs

5 Read the release notes, that is explained there.

[nawir]

@Jamie,

Assuming someone sell 2811+FXS+FXO+E1/T1 without PVDM.

That mean the buyer can only do:

1. One call at a time.

If I call outside. Nobody can do incoming call

2. Can't do PSTN Fax

What else I can't do without PVDM.

Or can I say without PVDM, I can only call between extension

3. I just read EVM.

In what situation I need that card

[Jaime Valencia]

No, you cannot make any calls that use TDM, so, your FXS, your FXO and your E1 are useless without PVDMs I suggest you search PVDM on cisco.com and read on the subject.