Voice over IP (VoIP) VoIP System Telephones
8.4
VoIP System Telephones
The following telephones and software packages are available for VoIP system telephony:
■ OpenPhone 73 IP: This is a VoIP-enabled edition of the OpenPhone 73 system telephone. This system telephone can be extended with up to three keypad extensions (KeyExtension 73P).
■ OpenPhone 75 IP: This is a VoIP-enabled edition of the OpenPhone 75 system telephone. This system telephone can be extended with up to three keypad extensions (KeyExtension 73P or KeyExtension 75D).
■ OpenPhone IPC: This VoIP software offers the functionality of a system tele-
phone using Windows 2000/XP executable software (see OpenPhone IPC starting on page 80). This software also provides local answering machine
functionality and can be integrated into CTI applications.
■ The older VoIP system telephones OpenPhone 63 IP and OpenPhone 65 IP can still be used.
8.4.1 Device Properties
The VoIP-enabled versions of the system telephones OpenPhone 73 IP and
OpenPhone 75 IP offer the same features as the corresponding system telephones. Using VoIP system telephones is therefore not much different from using standard system telephones. The following differences exist:
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Two RJ45 connector ports are available for ethernet connection. The ports are connected to one another via the telephone’s internal switch. The switch supports 10 Mbit/s or 100 Mbit/s full-duplex with priority given to VoIP data transmission.
LAN Port: Allows the telephone to connected to the LAN. Use a non cross-over
RJ45 patch cable to connect to a Hub or Switch.
PC Port: Allows the telephone to be connected to a workplace computer. Use a non cross-over RJ45 patch cable to connect to the PC’s network port.
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The VoIP system telephone’s power supply is provided by an extra plug-in power supply. It is also possible to provide a power feed via PoE (“Power over
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