Emergency Callback Number (ECBN) in Control Hub

Publisher

Cisco Systems, Inc. (help.webex.com)

URL

https://help.webex.com/en-us/article/nzqvtyq/Emergency-Callback-Number-in-Cisco-Webex-Control-Hub

Published

2025-04-01

Updated

unknown

Accessed

2026-09-16

HTTP status

200

License

Cisco proprietary documentation, all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• Cisco states that 933 is an emergency test call number in North America that allows testing of 911 call configuration without calling a Public Safety Answering Point and that many PSTN providers answer it with an interactive voice response repeating the callback number and emergency service address, and that Webex Calling does not support configuration of multiple fixed devices at different locations although RedSky can support it. in context
• Cisco states that a soft client on a non-fixed device with cellular capability always passes an emergency call to the native dialer, so the call never goes to Webex Calling or the location's PSTN, Webex Calling does not detect it, and no record or other processing of the call is provided. in context
• A key user is one whose direct telephone number is assigned to another user as an Emergency Callback Number, and if a key user or number is deleted the affected user's ECBN automatically defaults to their own telephone number if they have one and otherwise to the location default ECBN. in context
• Cisco states that the Location Default ECBN and the Assigned Number from the user's location must be directed to a live answering point such as a receptionist or other person within the location, and cannot be an auto attendant, interactive voice response or other service. in context
• A hunt group telephone number may be assigned as an Emergency Callback Number, and Cisco warns that the agent who called the emergency service and the agent answering the callback may be different and unaware of the emergency, and that a hunt group with Call Forwarding and Advance when busy enabled can prevent the group alerting agents about the emergency. in context
• Where a workspace device is configured to prevent inbound PSTN calls, an emergency call still goes out but the Public Safety Answering Point cannot call the device back, so Webex Calling allows a callback for an incoming call carrying a Priority header of emergency and relaxes the blocking rule for the device that dialled the emergency number for 60 minutes. in context
• Cisco states that Webex Calling does not know or store the Emergency Service Address for an emergency call, and that the address is provided by the PSTN provider, typically by a static mapping to the Emergency Callback Number it receives. in context

Cite this source record

APA

WarmTransfer. (2025, April 1). Emergency Callback Number (ECBN) in Control Hub. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-help-nzqvtyq-emergency-callback-number

BibTeX

@misc{warmtransfer-cisco-help-nzqvtyq-emergency-callback-number,
  title  = {Emergency Callback Number (ECBN) in Control Hub},
  author = {{WarmTransfer}},
  year   = {2025},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-help-nzqvtyq-emergency-callback-number},
  note   = {Cisco Systems, Inc. (help.webex.com), accessed 2026-09-16}
}