Garmin Cirrus Perspective SR20 Pilot's Manual page 564

ADDITIONAL FEATURES
Internal
Phone
550 Cirrus Perspective
Figure 8-85 Enable Iridium Telephone System
External
Phone
Phone is Idle
Phone is ringing
Phone has a dial tone (off hook) or connected to another phone
Phone dialed is busy
Phone is dialing another phone
Phone has failed
Phone status not known
Phone is disabled
Phone is reserved for data transmission
Calling other phone or incoming call from other phone
Other phone is on hold
Phones are connected
Table 8-5 Telephone Symbols
by Garmin – Pilot's Guide for the SR20/SR22SR22T
™
Description
190-00820-08 Rev. A