SIP Telephony
110
Voice over IP (VoIP)
account to the device entry. For this, change the
Status
setting on the
Network
:
DHCP
page to “Dynamic address assignment” and also change
the
Devices
selection to the “All” setting or to the “with configured MAC
only and all SIP system devices” setting.
If you want to use both features concurrently, change the
Status
setting on
the
Network
:
DHCP
page to “Dynamic and static address assignment”.
If you operate another DHCP server in your network, the Forum IPhone 512 /
Forum IPhone 545 can distinguish the different DHCP answers and will
normally take its configuration data from the Forum 523/524 communica-
tions system nevertheless. In a conflict situation, you may need to prevent the
configuration of the Forum IPhone 512 / Forum IPhone 545 SIP phone by a
foreign DHCP server. For example, add an exception rule for all MAC
addresses starting with 00:08:5D.
Note:
The Forum IPhone 512 / Forum IPhone 545 SIP telephones
need to receive a configuration from the communications
system at least once, before the described difference in the
DHCP answer is activated.
The TFTP server of the Forum 523/524 communications system will serve up
to 60 concurrent data transfers. To avoid overloading the TFTP server (e.g.
after a power failure), additional devices may get an IP address from the
DHCP server with a delay. The allocation of IP addresses will restart if the
TFTP server indicates the end of the overload situation.
Forum IPhone 512 / Forum IPhone 545 Hot Desking
The Forum IPhone 512 / Forum IPhone 545 SIP phones support the “Easy
Configuration / Hot desking” feature. This feature allows a user to operate his
personal configuration on any desired Forum IPhone 512 / Forum IPhone 545
of equal type.
To prepare a Forum IPhone 512 / Forum IPhone 545 for Hot Desking, you can
configure a function key with the “Logout” function. If this function key is
pressed, the currently assigned device entry will be marked as “Logged Out”
and the Forum IPhone 512 / Forum IPhone 545 restarts. You can indicate
logged out device entries in the Configurator on the
Telephony
:
Devices
:
VoIP
Phone
page by their shortened MAC address.
After restart, the logged out Forum IPhone 512 / Forum IPhone 545 will
show a login page. A user can enter his call number and his user PIN. If a