Aastra OpenCom 100, Mounting And Commissioning User Manual

Page: 132 / 244

Voice over IP (VoIP) VoIP System Telephones
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A VoIP system should be operated with a non-broadcast-capable IP con-
nection. This may be an RAS connection, a VPN connection or another type of
routed connection.
An external DHCP server can also control a VoIP system telephone’s start pro-
cedure. In this case, system software matching the type of VoIP system telephone
must be transferred via TFTP.
The file name is determined by the telephone type. If a Media Gateway card is
installed, you can also specify the TFTP server on the card which has a higher per-
formance.
After the VoIP system telephone has been connected to the mains power supply,
the start procedure is as follows:
1. The boot loader starts and shows the VoIP system telephone’s MAC address in
the display. A DHCP request is sent simultaneously via broadcast on the
255.255.255.255 broadcast address.
2. An IP address, network mask and the default gateway for the start procedure
are sent from the DHCP server. Via the “Next server” option, the DHCP server
also provides the TFTP server’s IP address and the operations software’s file
name. The DHCP server uses the MAC address to select the operations software
file which matches the type of device.
3. The boot loader loads the approximately 2 MB operations software file from
the specified TFTP server. The TFTP server’s IP address and the file’s name are
shown in the display. The loaded operations software is started.
Telephone type OpenCom 130/131/150 Media Gateway card
Aastra 6773ip
(OpenPhone 73 IP) opi7x.cnt /ram/ip_tel/opi7x.cnt
Aastra 6775ip
(OpenPhone 75 IP) opi7x.cnt /ram/ip_tel/opi7x.cnt
OpenPhone 63 IP opi63.cnt /ram/ip_tel/opi63.cnt
OpenPhone 65 IP opi65.cnt /ram/ip_tel/opi65.cnt
RFP 32/34/42 ip_rfp.cnt /ram/ip_tel/ip_rfp.cnt