I need to provide analog drops through our switch to four conference rooms for use with a Polycom Conference phone.

I'm not positive of my working switches Software release. I have a slot available in the switch. I also inherited parts from a merger. I have a MPD card with Generic SBU5.03 cartridge and an SHD Card.

How do I determine the Generic of the working switch? I access working console using dkeybx.bat file is stored in a directory named PCPSB7.

Do I need to track down an ELA card?

Do I need any external devices (ie ringer, power) to use the analog card?