The ICM supports two phone lines, one for each “Voice Line” jack (an additional monthly fee applies to the optional second line). As a result, the system can support two simultaneous voice calls. However, KVH offers the following optional accessories that add additional phone lines to support three or more simultaneous calls:
Multimedia Terminal Adapter (MTA) (see Additional MTA(s))
Crew Calling Gateway (see Crew Calling Gateway)
NOTE: Only voice calls carried on phone lines 1 and 2 are prioritized over general data traffic.