atcomsystems.ca/forum Forums TDM Business Telephone Systems NEC Telephones & Systems SL2100 and Polycom SoundStation 2W

The Conference button on the polycom is basically a flash button, so you will have to instruct them to press that plus the appropriate feature code as described below:
Single Line Terminal
1. Establish intercom or trunk call.
2. Hookflash and dial #1.
3. Dial extension you want to add.
- OR -
Access trunk call.
- OR -
Retrieve call from Park orbit.
4. Hookflash and repeat step 3 to add more parties.
- OR -
Hookflash twice to set up the Conference

Hookflash is often an enigma as it is a balancing act between PBX and Telco and within those two there is an additional timing condominium of spinning plates.

I have found the group conference to be easier personally and I don't get blamed when the conference room folks hang up on everyone when setting up the call or by accidentally hanging up since the conference button is just below the answer/disconnect button, but you have options. The Group Conference is basically getting to the Group Extension (transferred, dialed directly, forwarded via DID, button on Auto Attendant, etc) and enter the passcode which can be 1-1-1-1 and you are all set.