7940 Manual Programming Mode Issue / Error Message

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Oct 29th, 2007
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In my home lab I'm running Unified Communications Manger 6.0 (1a) and I currently have one 7940 (68-1042-02 REV D0 auto registered to the server. As for my 2nd 7940 (68-1735-09 rev.B0) I can't access the manual programming mode using the settings button which is a check mark box button on this phone. Is there another way to get into the setup on this phone? Also, on the display of this phone I see the message “Protocol Application Invalid.” I'm sure I will be able to correct this error once I get into the setup of this phone. I was able to do a reset on this phone by holding down the # button and entering 123456789*0# and then selecting yes.

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owillins Fri, 11/02/2007 - 09:18
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In certain cases, when the IP phone initially fails to resolve the Cisco Discovery Protocol, it can mistakenly try to use the native VLAN. If the Dynamic Host Configuration Protocol (DHCP) on the native VLAN answers, but does not provide a valid TFTP server, the application loader can fail.

perform these steps for resolve .

1.If a DHCP server is configured on the native VLAN, make sure that option 150 information points to a known and functioning Cisco CallManager system.

2. Make sure that the TFTP and DHCP options are configured properly.

If step 1 and step 2 do not help change the switchport from a trunk port to an access port, once the phone registers to the Cisco CallManager, change it back to trunk port.


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