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Cisco Bug: CSCuw42734 - Inbound fax using T.38 SG3 failing with RCP not being sent by the gateway

Last Modified

Sep 25, 2018

Products (98)

  • Cisco IOS
  • Cisco 886VA-CUBE Integrated Services Router
  • Cisco 886VAG 3G Integrated Services Router
  • Cisco 812 CiFi Integrated Services Router
  • Cisco C897VA Integrated Services Router
  • Cisco 892W Integrated Services Router
  • Cisco C892FSP Integrated Services Router
  • Cisco 819 Hardened Integrated Services Router
  • Cisco 888W Integrated Services Router
  • Cisco VG204XM Analog Voice Gateway
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Known Affected Releases

15.1(4)M1 15.2(4)M 15.3(3)M 15.4(3)M 15.5(1)T 15.5(1.1)T

Description (partial)

Symptom:
Inbound fax using T.38 SG3  is intermittently failing with RCP not being sent by the gateway to the fax server. The IP packet capture indicates that the gateway failed to send T.30 RCP packets to the egress endpoint (fax server).

Conditions:
Fax Version - T.38 version 3
IOS Version - 15.5(1)T
DSPWare - 38.1.X
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Bug Details Include

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  • Status
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