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Cisco Bug: CSCuj38450 - E1 DS0 group TX IDLE bits intermittently send as 0000 instead of 0001

Last Modified

Feb 13, 2018

Products (74)

  • Cisco 3900 Series Integrated Services Routers
  • Cisco 861W Integrated Services Router
  • Cisco 1905 Serial Integrated Services Router
  • Cisco VG204XM Analog Voice Gateway
  • Cisco 888W Integrated Services Router
  • Cisco C897VA Integrated Services Router
  • Cisco 886VAG 3G Integrated Services Router
  • Cisco 886VA-CUBE Integrated Services Router
  • Cisco 2951 Integrated Services Router
  • Cisco 812 CiFi Integrated Services Router
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Known Affected Releases

15.3(3)M

Description (partial)

Symptom: The router sends IDLE ABCD of 0000 instead of 0001 under certain situations. Customer needs the IDLE bits to always be 0001 for his set up to work with voice.
Conditions: The issue occurs in the following scenarios
      1. When the router is reloaded.
      2. When we issue a shutdown and no shutdown command under the E1 controller.
      3. When the voice-port is issued a shutdown and no shutdown command.
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Bug Details Include

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