Voip / Sip Connections - Proximus Forum IPhone 5010 User Manual

General Functions
Call forwarding chains
The system administrator can configure the system so multiple call
forwarding instances can be linked one to another to form a chain. A simple
example: user A forwards to user B, who then forwards to user C. A call for
user A is then directly signalled to user C. A setting in your user group
regulates which call number appears on your device when a call which has
been forwarded multiple times is signalled on your device: you will see either
the call number of the last user who programmed the last call forwarding in
the chain, or the call number of the first user in the chain. The number
displayed is also saved to the caller list for missed calls.
The system prevents call forwarding chains from forming a loop, e. g. when
the call forwarding destination refers back to the call forwarding source. When
the system detects a call forwarding loop, no further call forwarding is carried
out. This can mean that – despite call forwarding being programmed – calls
are nonetheless signalled on your device.
A loop is also detected during call deflection. If you receive a call via a call
forwarding chain and wish to deflect it to a destination call number which is
already in the call forwarding chain, a negative acknowledgement tone is
heard and the call signalling on your device will continue.
Contact your system administrator if call forwarding is not functioning as
expected on your device. The system administrator is able to analyse call
forwarding chains and eliminate any possible conflicts.

VoIP / SIP Connections

The following information is of interest when telephoning via yout
Forum IPhone 50xx SIP system telephone:
● Brief silences or echoes may occur during some connections. This is due to
the transmission quality of the line and not a functional defect of your
telephone.
● When the telephone is connected to the line or is disconnected from the
line (e.g. when the company network fails), when commissioning the
device, the required terminal software is loaded first (the telephone is
"booting"). This happens automatically and may take a few minutes. The
telephone is ready for operation when the display shows the date/time
and the internal call number. Then you can telephone as you are accus-
tomed.
122 Telephoning