Aastra OpenCom 510 User Manual page 128

Voice over IP (VoIP)
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 determined by the telephone type.
Telephone type
OpenPhone 63 IP
OpenPhone 65 IP
OpenPhone 73 IP
OpenPhone 75 IP
RFP 31/32/33/34/41/42
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 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.
4. The operations software sends a DHCP request on the broadcast address
255.255.255.255. The VoIP system telephone now receives an IP address,
network mask and default gateway for operations from the DHCP server. Using
"Option 43", which is reserved for this purpose, the DHCP server also provides
the IP address of the communication system and port number 8100 for regis-
tration.
5. The VoIP system telephone creates a TCP connection to the supplied IP-
address/port-number combination and sends a registration query. The
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File name
/ram/ip_tel/opi63.cnt
/ram/ip_tel/opi65.cnt
/ram/ip_tel/opi7x.cnt
/ram/ip_tel/opi7x.cnt
/ram/ip_tel/ip_rfp.cnt
VoIP System Telephones