Voice over IP (VoIP)
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VoIP System Telephones
The following telephones and software packages are available for VoIP system
telephony:
•
Aastra 6773ip (OpenPhone 73 IP): This is a VoIP-enabled edition of the Aastra 6773
(OpenPhone 73) system telephone. This system telephone can be extended with
up to three key extensions Aastra M671.
•
Aastra 6775ip (OpenPhone 75 IP): This is a VoIP-enabled edition of the Aastra 6775
(OpenPhone 75) system telephone. This system telephone can be extended with
up to three key extensions Aastra M671 or Aastra M676.
•
Aastra 277xip (OpenPhone 7x IPC): This VoIP software offers the functionality of an
system telephone using Windows executable software (see Aastra 277xip
(OpenPhone 7x IPC) starting on page 139). 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. With the OpenPhone 63 IP and OpenPhone 65 IP telephones no postdi-
alling via DTMF is supported for ISDN or SIP lines.
Device Properties
The VoIP-enabled versions of the system telephones Aastra 6773ip (OpenPhone 73 IP)
and Aastra 6775ip (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:
•
Two RJ45 connector ports are available for ethernet connection. The ports are con-
nected 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 workstation computer. Use a
non cross-over RJ45 patch cable to connect to the PC’s network port.
•
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 Ethernet”).
PoE requires special devices for power feeds, as well as a completely wired RJ45
connection line.
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