User guide

SIP Telephony 123
Voice over IP (VoIP)
Forum IPhone 512 / Forum IPhone 545
SIP Telephones
You can operate the Forum IPhone 512 and Forum IPhone 545 SIP
system telephones on the Forum 523/524 communications sys-
tem. The firmware of the communications system already includes
the matching firmware files for the following SIP telephones:
The Forum IPhone 512 / Forum IPhone 545 SIP telephones pro-
vide, besides the VoIP telephony, additional system telephony
features which you can configure conveniently and safely with the
help of the Web configurator. The Forum IPhone 512 /
Forum IPhone 545 SIP telephones support G.711 codec (a-Law
and µ-Law), the G.729 codec and the transmission of DTMF sig-
nals according to RFC 2833.
An MGW Interface Card is required to operate Forum IPhone 512 /
Forum IPhone 545 SIP telephones with the Forum 523/524 com-
munications system.
The general commissioning takes place in the Configurator of the
Forum 523/524 communications system with the following steps:
1. Add a new entry under Telephony: Devices: VoIP Phones.
Enter a call number and select the telephone type as
Forum IPhone 512 / Forum IPhone 545. Optionally enter the
MAC address and the IP address of the Forum IPhone 512 /
Forum IPhone 545 (see Forum IPhone 512 /
Forum IPhone 545 DHCP starting on page 125).
Forum IPhone 512 and Forum IPhone 545 SIP telephones
Model Short description
Forum IPhone 512 Basic level version, display with 3 lines,
8 programmable keys, 2 line keys, 802.3af
(PoE) power supply, two Ethernet ports for
PC and LAN, separate 48 volts wall power
supply available
Forum IPhone 545 Premium version with graphic touchscreen
display, 802.3af (PoE) power supply, two
Gigabit-Ethernet ports for PC and LAN, 11
softkeys on 5 levels, 3 line keys, up to 3 key
extensions with function keys or 3 key
extensions with softkeys