Multi-Party Voice Conference Description The system allows multiple internal and external parties to be connected on a call, conference. An unlimited number of 3-party conferences may be established using iPECS Phones. In addition, each MCIM (Multi-party Conference Interface Module) up to 32 parties with the g.711 or g.729 codec and 24 with the g.723 codec may be connected in a single voice conference. The MCIM will support any combination of parties and conferences to the maximum total number of parties in conference. Multiple MCIMs, see chart below, are installed to support multiple multi-party conferences with a maximum of 32 parties in any single conference. iPECS iPECS iPECS iPECS iPECS Operation ----Micro 50 300 600 1200 iPECS Phone 1 MCIM unit maximum 2 MCIM units maximum 4 MCIM units maximum 8 MCIM units maximum 30 MCIM units maximum To establish an ad-hoc conference 1. Establish first call. 2. Press the [CONF] button. The LED will light, the connected party is placed on exclusive hold and the user receives dial tone. 3. Place second call. 4. When connected, press [CONF], new call is placed on exclusive hold. 5. Repeat steps 3 and 4 above to add additional conference parties. 6. Press [CONF] button to establish conference. To place a conference on hold 1. Press the [HOLD] button, the [CONF] button LED will flash. To retrieve held conference 1. Press [CONF] button, all parties reconnected.