Cisco
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Cisco 7940/7960
Version 2.0.0.1612 and on supports the Cisco 7940/7960 phones with plug and plug configuration.
In order to run such a phone, you need to do the following steps:
Preparing plug and play
As with any other phone, you need to make sure that at least one exctension either matches the MAC address of the phone or you are using a wildcard ('*' or '?') in the Registration tab of the extension ("Bind to MAC Address"). Other settings like the "Default PnP Dialplan Scheme" or the time zone in the domain settings might also be important.
Directing the phone to the PBX
You need to tell the phone to pick its configuration up from the PBX. With Cisco phones, the best way to do this is to program your DHCP server. You need to set the option 66 to the IP address of the PBX.
Software Upgrade
The PBX expects version 8.6 of the Cisco phones. You need to have the following files in your tftp directory:
-rw-r--r-- 1 benjamin root 15 Dez 13 15:52 OS79XX.TXT -rw-r--r-- 1 benjamin root 129824 Dez 12 16:54 P003-08-6-00.bin -rw-r--r-- 1 benjamin root 130228 Dez 12 17:21 P003-08-6-00.sbn -rw-r--r-- 1 benjamin root 459 Dez 12 17:40 P0S3-08-6-00.loads -rw-r--r-- 1 benjamin root 753560 Dez 12 17:20 P0S3-08-6-00.sb2
You get those files from the place were you bought your devices. There are also other places in the Internet which make those files available.
If you wish to use another firmware load, you need to change the parameter "firmware" in the pnp.xml file. Please contact pbxnsip if you wish to do that.
Password Protection
Because TFTP is a insecure protocol, you might have problems providing the password. If you are testing your setup, you should allow TFTP password provisioning. After you feel confident, you can set it to "once", so that during the installation procedure of your phones, you will retrieve the password on your devices. Please see the general discussion about this topic.
Booting the Device
After preparing everything, you should boot your phone. The phone should report that it upgrades to the above firmware, and then pull down the configuration file from the server.
Compatibility Notes
The SIP image for the phones does not support Intercom per call mode. Other feature like line monitoring or secure calls are also missing. However, the basic features like call transfer and music on hold are working.
