Routing elements
158
System functions and features as of R4.1
syd-0570/1.2 – R4.1 – 08.2016
Substitution Circuit
The first call is answered by the manager personally; a second simultaneous call will
ring on the deputy manager’s set; the third call will ring in the secretary; the fourth
caller will obtain "busy". The calls can be visually signalled everywhere immediately.
Acoustic signalling takes place after a delay.
Fig. 76 Substitution circuit with key telephones
Other Subjects Relating to Key Telephones:
Terminals, Internal traffic, Incoming traffic, Outgoing traffic, User-related features.
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1/1
1/2
1/3
200
250
222 22 20
200
KT
Manager
Substitution
Secretary
DDI No. 20
-> Call distribution 1
Direct dialling plan 1
Call distribution 1
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