Cisco 7911G/7942/7945/7962 Phone with Asterisk
Download the firmware (7911 ,7942, 7945 , 7962) and extract it.
Download and install/extract the tftp server software.
Open the tftp server software and make the SIP firmware extracted directory as the root directory of the tftp server.
Goto command prompt(Start>Run>CMD and press enter) and enter the following command.
C:\Users\user>tftp <tftp-server-ip-address> get dialplan.xml
You should get the message starting “Transfer Successful”.(If your OS is Win7/Vista you have to install tftp client from the Add/Remove Programs)
C:\Users\shyju>tftp 192.168.20.124 get dialplan.xml Transfer successful: 258 bytes in 1 second(s), 258 bytes/s
Open your dhcp server configuration and add TFTP server IP address as the boot server in DHCP scope Options. Refer this article to configure DHCP Options.
Rename the with SEP<MAC-ADDRESS-OF-YOUR-PHONE>.cnf.xml. Then open that file and change the following lines to match with your IP PBX details.
<processNodeName> <featureLabel> <proxy> <port> <name> <displayName> <authName> <authPassword>
Edit your Asterisk SIP configuration and add nat = no below the user context.
This step is important otherwise the phones will not register and on the phone’s display you can see the message Registering..
If you are using FreePBX the file will be /etc/asterisk/sip_additional.conf, In the case of Asterisk-GUI file is /etc/asterisk/users.conf
[610] deny=0.0.0.0/0.0.0.0 type=friend secret=jbsdf7h4ks qualify=yes port=5060 pickupgroup= permit=0.0.0.0/0.0.0.0 nat=no mailbox=610@device host=dynamic dtmfmode=rfc2833 dial=SIP/610 context=from-internal canreinvite=no callgroup= callerid=device <610> allow=all accountcode= call-limit=50
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