T-Comfort Comfort Pro S, Руководство по монтажу и пусконаладке

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VoIP System Telephones Voice over IP (VoIP)
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 communications system and port number 8100 for registration.
5. The VoIP system telephone creates a TCP connection to the supplied IP-address/port-number
combination and sends a registration query. The Comfort Pro S checks the MAC address sent with the
registration and confirms the registration request if the VoIP system telephone is listed in the menu
Telephony: Devices: VoIP Phones . The keep-alive time, port number (8101) for telephony signalling and
the value to use for the TOS byte are also communicated in the registration answer.
6. The VoIP system telephone creates a second TCP connection using the signalling port number 8101 and
sends a registration.
7. Extra connections are created using the IP protocol RTP (“Realtime Transport Protocol”) for call data
when a call is created. For calls between two VoIP system telephones, port numbers above 8200 are
used. For transmission to a Media Gateway card, a port in the range 1024 – 1087 is used.
If you wish to operate a VoIP system telephone via a routed IP connection (for example VPN or RAS) it may be
necessary to configure an external DHCP server accordingly. Please note the selection of the codec and
keep-alive time for RAS connections. This can be done by selecting the default profile RAS in the Telephony:
Devices: VoIP Phones for the VoIP system telephone. The operations software provided via TFTP must match
the type of device and communications system. You may also need to configure BOOTP, DHCP and TFTP
servers for the VoIP system telephone.
Local Configuration
In addition to automatic configuration via BOOTP/DHCP, it is possible to manually configure a
Comfort Pro P 300 IP or a Comfort Pro P 500 IP. This can make sense, for example, when you wish to connect
a VoIP system telephone at a distant location via router. This local configuration is saved permanently in the
non-volatile memory of the VoIP system telephone. To change the local configuration, use an additional
programme, the Java-based “IP Phone Configurator”.
N
Note: Java programmes can be run on all common operating systems. To execute
Java-based programmes, you must install a suitable Java runtime environment on your
operating system (JRE). This can be downloaded under the following web address:
http://www.java.com/.