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Setting Wallpaper in Cisco IP Phones

Setting Wallpaper in Cisco IP Phones

Setting Wallpaper(Desktop Background)

issue the debug command ' debug tftp events '

Ip phone -> open wallpaper option from user preferences (setting->user preferences->background images)
In the tftp debug output a file named List.xml is being requested.

May 17 14:19:14.722: TFTP: Looking for Desktops/320x212x16/List.xml

this xml file contains the list of images(file names or image path in xml formal)
the path varies depends on ip phone (Desktops/320x212x16/ or Desktops/320x212x12/)
we issued debug command to find this path.
search the callmanager and find the file location and create a tftp binding
copy the request from the debug output above.

tftp-server flash:/Desktops/320x212x16/List.xml alias Desktops/320x212x16/List.xml

When phone send a tftp request ' Desktops/320x212x16/List.xml ' Callmanager send the file located at flash:/Desktops/320x212x16/List.xml to ip phone.

alias is a alternate name for the same file location
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Cisco FXO Disconnect issue

Cisco FXO Disconnect issue

The most common symptoms of this problem are phones that continue to ring when the caller has cleared, or FXO ports that remain busy after the previous call should have been cleared.

Refer Cisco document (Understanding FXO Disconnect Problem)
Refer external source (Understanding FXO Disconnect Problem)

Solution :
FXO port dont know the diconnect frequency used in pstn line. we solve this issue by capturing the parameters( frequency and cadence)

create a custom cptone using the command ' voice class custom-cptone '
using this command we can customize disconnect tone,busy tone,pstn line parameter....

how to capture PSTN parameters for FXO disconnect ???

Method 1:

Goto the following webpage (World PSTN Tone Database)

webpage contains international call progress tones

search your country and select tone


voice class custom-cptone
dualtone disconnect
cadence ...

On your FXO port, you will want a configuration similar to:

voice-port 0/0…

Cisco FXO Caller id receiving problem in PSTN connection

Cisco FXO Caller id receiving problem in PSTN connection

Error message: (generated by ' debug vpm signal ' )

err msg 1) get_fxo_caller_id:Caller ID receive failed.

err msg 2) htsp_ephone_start_caller_id_tx calling num= calling name = called num=200 orig called num=

Check caller-id support in FXO (click here)
check caller-id feature support in FXO Card using above link

Configure advanced options (click here)
Above document shows how to configure Caller ID
advanced options(dsp-pre-alloc,line-reversal)

Solution 1:
voice-port 0/0/0
caller-id enable
caller-id alerting ring 1 (default)


voice-port 0/0/0
caller-id enable
caller-id alerting ring 2

Solution 2
upgrade ios to higer version (recommended method)

when the error is fixed debug output should be:

get_fxo_caller_id:Caller ID received. Message type=4 length=19 checksum
May 17 09:28:42.327: [0/1/1] Caller ID String 04 10 30 35 31 37 31 32 32 39…