Making Telephone Calls with Convenience Functions
FRITZ!Box 7490 135
Enabling Call-Back
1. Press the 5 key. You have 20 seconds for this.
Wait for the second-long positive acknowledgment tone.
2. Hang up the handset.
Call-back is enabled.
Deleting Call-Back
1. On the same telephone, press the keys Rr37r.
2. Pick up the handset and hang it up again.
If you are awaiting multiple return calls, the oldest call-back
will be deleted.
Call Tracing on the ISDN Line
You can enable “Tracing” during a call or after the caller
hangs up. For more information on the “tracing” feature, con-
tact your ISDN provider.
Enabling Tracing
Press the keys Rs39r on the telephone.