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Cisco Bug: CSCsz42982 - IOS gateway mapping ISDN Setup_Ack w/PI to H225 Progress

Last Modified

Feb 22, 2014

Products (1)

  • Cisco 3800 Series Integrated Services Routers

Known Affected Releases


Description (partial)


The dialed number is not completely stored on the phone process within CUCM.
This fails redial functionality


The setup involves a H323 connection between CUCM and IOS gateway
and an ISDN connection to PSTN.
On both the H323 and ISDN side we use overlap sending.

This issue occurs when the ISDN returns an ISDN Setup_ACK with Progress indicator.
This ISDN Setup_ACK w/PI is mapped to a H225 Progress, 
digits dialed after the H225 Progress are not stored in the buffer, which fails the redial.
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