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Cisco Bug: CSCvu49585 - Invite in the refer transfer call flow must be sent to refer-to host regardless of replaces

Last Modified

Sep 11, 2020

Products (43)

  • Cisco IOS
  • Cisco Catalyst 9300-48P-A Switch
  • Cisco Catalyst 9300-48UN-A Switch
  • Cisco Catalyst 9400 Supervisor Engine-1XL-Y
  • Cisco Catalyst 9300-48U-A Switch
  • Cisco Catalyst C9500-16X-E Switch
  • Cisco Catalyst 9300-48UXM-A Switch
  • Cisco Catalyst 9300-48T-A Switch
  • Cisco Embedded Wireless Controller on Catalyst 9115AX Access Points
  • Cisco Catalyst 9117AXI Access Point
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Known Affected Releases

16.12.3 16.9.5

Description (partial)

In a REFER call flow and "xfer target refer-to" is configured. 

1. In the case of consultative transfer i.e refer-to header has a replaces parameter, cube performs a domain lookup if refer-to host is a domain or sends the invite to refer-to host
2. In the case of blind transfer i.e. refer-to header do not carry a replaces parameter, cube bypasses the domain lookup if refer-to host is a domain or sends the triggered invite to dial-peer session target instead of refer-to host. 

Cube must send the triggered invite to refer-to host regardless of replaces

when xfer target refer-to is configured
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