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Cisco Bug: CSCur03957 - external phone service issue

Last Modified

Jul 17, 2018

Products (30)

  • Cisco IP Phone 7800 Series
  • Cisco IP Phone 8851
  • Cisco Unified IP Phone 9951
  • Cisco Unified IP Phone 7945G
  • Cisco Unified SIP Phone 3905
  • Cisco IP Phone 7841
  • Cisco Unified IP Phone 7962G
  • Cisco IP Phone 7821
  • Cisco Unified IP Phone 7911G
  • Cisco Unified IP Phone 6961
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Known Affected Releases


Description (partial)

78x1 phones.They configured external services on third party server to use hostname in the URL. Destination server should internally resolve the hostname and provide proper HTTP response. Events should happen in this order: Service list is requested via HTTP (can be from CUCM or third party server). 200OK is sent to IP Phone with a service in hostname format. Hostname is resolved through DNS and should then send the HTTP request with URI in hostname format. 

However, for this phone model only, we see that the phone reaches DNS to resolve the service hostname and then modify the service URI to use IP address instead of hostname.
This is causing problem to the CU as third party server expects to get hostname in service URI

It occurs on phone load 10-2-1-12 load.
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