Deutsche Telekom 704PC - Manual (Page 60)

If the ISDN service ECT is available in the exchange, you can activate and deactivate
it as required:
Lift the handset. The configuration mode is active and you hear a special internal
dialling tone.
Select the code digits 990.
Select the code digits 71 to activate
or
the code digits 70 to deactivate ECT.
Press the hash key. You hear a positive acknowledgement tone.
Replace the handset.
Activating/Deactivating Call Transfer (ECT)
52
Configuration via Telephone
If your Eumex 704PC LAN is installed as a secondary system behind another commu-
nications system, it may be necessary (depending on the type of primary system) to
edit the following setting in order to transfer calls in the primary system:
Lift the handset. The configuration mode is active and you hear a special internal
dialling tone.
Select the code digits 990.
Select the code digits 81 to activate
or
the code digits 80 to deactivate call transfer in the primary communications system.
Press the hash key. You hear a positive acknowledgement tone.
Replace the handset.
Call Transfer in a Communications System
b
9 9 0
7 1
7 0
# q
d
b
9 9 0
8 1
8 0
# q
d