Aastra OpenCom 510 User Manual page 170

Team Functions Examples of Use
Every call on a trunk key can be transferred to any other party by means of the R
key. For more information, refer to the chapter entitled "Consultation, Toggling,
Transfer and Conference" in the "OpenPhone 61, 63, 65" or "OpenPhone 71, 73, 75"
user guide.
Line Busy Indication
If a line is busy, e.g. TrK 10 on Miller's telephone, the appropriate team key will
indicate this, e.g. TK 10 on Johnson's telephone.
Call Signalling
In this example, calls via trunk keys are signalled acoustically. Calls via team keys
are indicated by a visual signal (the team key LED flashes).
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