I have a cisco 7911g phone to be converted from skinny to SIP. Bricscad license key serial keys. I have the downloaded firmware with me (version 9.2.1) and followed the exact same steps as above. The phone boots and I am getting the below tftp log “Serving term06.default.loads” to 192.168.1.201″ where 192.168.1.201 is my cisco 7911g phone.

Firmware Versions 9.0(3) for Cisco Unified IP Phone Models 7911G and 7906G The 9.0( 3 ) firmware image within the installation program, supports the Skinny Client Control Protocol (SCCP) for the following Cisco Unified IP Phone models: • Cisco IP Phone 7911G • Cisco IP Phone 7906G This firmware version is supported on Cisco Unified CallManager Release 5.0 and higher, and Cisco Unified CallManager Releases 4.2, 4.1, 4.0, and 3.3. Note: 7906G is not supported on 4.0, 5.0(1) and 5.0(2) Cisco Unified Call Manager releases. Release Notes For a list of Resolved Problems and Known Problems with this firmware version, you can obtain the Firmware Release Notes in English by clicking the following URL: For all Phone firmware Release Notes, click the following URL: For all phone documentation, click the following URL: Image Authentication Support Cisco provides image authentication with its various IP phone protocols.

Image authentication allows the phone to detect if the image has been tampered with before it is programmed into the phone. If the image fails the authentication process then the phone will reject the image. Image authentication occurs through signed files. All Cisco Unified IP Phone models 7911G and 7906G loads are signed and can only be upgraded or downgraded to other signed releases. The 9.0( 3 ) firmware uses signed (authenticated) files.

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This step improves IP phone security on the Cisco Unified IP Phone models 7911G and 7906G. Installing the Firmware Load Before using the Cisco Unified IP Phone models 7911G and 7906G with Cisco Unified CallManager release 3.3 or later, you must install the latest firmware on all Cisco Unified CallManager servers in the cluster. Note: If you have a Cisco Unified CallManager on Release 3.0, 3.1, or 3.2, do NOT install this firmware. You must first upgrade your Cisco Unified CallManager to the compatible releases listed in Table 1 or Table2.

I’ve been working on bringing some old cisco 7911G’s up to a recent sip firmware so they can be used with asterisk. Luckily the firmware is all available on the cisco site as long as you sign up for a free account. If you’re running firmware older than 8.3 you need to update to a firmware level between 8.3 and 8.5.2 before you upgrade to firmware 9.x. From the firmware 9.2 release notes: 'For all SCCP firmware upgrades from firmware release versions earlier than 8.3(3) to Version 9.2(3) or later, you must first upgrade your firmware to an intermediate Version (8.3(3) to 8.5(2)) and then upgrade to 9.2(3).' To do the upgrade you need the a tftp server and option 66 defined on your dhcp to tell the phones where to look for the files. I’m doing this with a CentOS 6 server.

To force the upgrade I had to do the following: Power off the phone. Hold down the # key. While holding #, connect an AC adaptor to the phone. Continue to hold # until the line buttons blink amber. Release the # key.

Enter *# Once you do that the phone is wiped and it reboots in search of new firmware. After obtaining an ip from DHCP (with option 66 pointing it to the tftp server) it will connect to the tftp server and start fetching firmware. I had a problem where it was fetching the first few files but then generating a nak error on the tftpd server: Apr 13 10:25:10 pbx in.tftpd[2732]: RRQ from 10.10.10.10 filename term11.default.loads Apr 13 10:25:10 pbx in.tftpd[2733]: RRQ from 10.10.10.10 filename Jar11sip.8-2-2ES4.sbn Apr 13 10:25:10 pbx in.tftpd[2733]: sending NAK (1, File not found) to 10.10.10.10 Apr 13 10:25:10 pbx in.tftpd[2734]: RRQ from 10.10.10.10 filename cnu11.8-2-2ES4.sbn Apr 13 10:25:11 pbx in.tftpd[2734]: tftpd: read(ack): Connection refused So it requests the first file but then dies on the Jar11sip.8-2-2ES4.sbn. After looking in the tftp folder I noticed that the file was there as expected. After some head scratching I ran strings against term11.default.loads which tells the phone what firmware files to download.

# strings term11.default.loads # This file contains a list of archive image files that will be requested by the # RELEASE load version 8-2-2ES4 #HARDWARE_COMP_1 1 Jar11sip.8-2-2ES4.sbn cnu11.8-2-2ES4.sbn apps11.8-2-2ES4.sbn dsp11.8-2-2ES4.sbn cvm11sip.8-2-2ES4.sbn # ls apps11.8-2-2ES4.sbn cvm11sip.8-2-2ES4.sbn jar11sip.8-2-2ES4.sbn term06.default.loads cnu11.8-2-2ES4.sbn dsp11.8-2-2ES4.sbn SIP11.8-2-2SR3S.loads term11.default.loads Ah! Linux is case sensitive so trying to download Jar11sip.8-2-2ES4.sbn isn’t going to work if the file on the server is jar11sip.8-2-2ES4.sbn. A quick rename of the file to Jar11sip.8-2-2ES4.sbn fixed the issue and the phone did it’s firmware update correctly. That seems like a bit of an oversight by the firmware release team at Cisco but maybe their Call Manager software runs a case insensitive tftpd.