DocumentationBlogSupport
Log inSign up
Log inSign up
BlogSupport
Build
Getting StartedPlatform Introduction
Embedded Apps
What's NewOverviewDeveloper GuideSidebar API Quick StartSubmission Checklist for Embedded Apps
Design Guidelines
MessagingMeetingsDevicesSidebarSidebar on Mobile
API Reference
BotsButtons and CardsIntegrationsBYODSService AppsService App GuestsService Apps G2GGuest IssuerWidgetsWebex ConnectLogin with WebexInstant ConnectInstant Connect Meeting LinksDeveloper SandboxBeta ProgramSubmit Your AppSupport PolicyFAQs
APIs
API Behavior ChangesPartners API GuideXML API DeprecationAccess the APIREST API BasicsCompliance
Webex APIs
Reference
Data Sources
Admin
OverviewAdmin APIsHybrid ServicesAuthentication
Guides
Hybrid ServicesWebhooksReal-time File DLP BasicsProvisioning APIsBackground ImagesAudit Events Error Reference
Reference
Admin Audit EventsAuthorizationsEventsGroupsHistorical AnalyticsHybrid ClustersHybrid ConnectorsLicensesMeeting QualitiesOrganization ContactsOrganizationsPartner ManagementPartner Reports/TemplatesPartner TagsPeopleRecording ReportRecordingsReport TemplatesReportsResource Group MembershipsResource GroupsRolesSecurity Audit EventsSession TypesSettingsSpace ClassificationsTracking CodesWorkspace LocationsWorkspace Metrics
Webex Calling Beta
Overview
Guides
Integrations and AuthorizationMetadata and Samples
Webex Calling
OverviewSDKs and ToolsWhat's New
Guides
Integrations and AuthorizationProvisioning APIsMetadata and SamplesBackground Images
Reference
Call ControlsCall RoutingCall Settings For MeCalling Service SettingsClient Call SettingsConference ControlsConverged RecordingsDECT Devices SettingsDevice Call SettingsDevicesEmergency Services Settings
PUTUpdate RedSky Service Settings
POSTCreate an Account and Admin in RedSky
GETRetrieve RedSky Account Details for an Organization
PUTUpdate the Organization RedSky Account's Compliance Status
GETGet the Organization Compliance Status and the Location Status List
GETGet the Organization Compliance Status for a RedSky Account
POSTLogin to a RedSky Admin Account
GETGet a Location's RedSky Emergency Calling Parameters
GETGet a Location's RedSky Compliance Status
PUTUpdate a Location's RedSky Compliance Status
POSTCreate a RedSky Building Address and Alert Email for a Location
PUTUpdate a RedSky Building Address for a Location
GETGet an Organization Emergency Call Notification
PUTUpdate an Organization Emergency Call Notification
GETGet a Location Emergency Call Notification
PUTUpdate a Location Emergency Call Notification
GETGet Dependencies for a Hunt Group Emergency Callback Number
GETGet a Person's Emergency Callback Number
PUTUpdate a Person's Emergency Callback Number
GETRetrieve A Person's Emergency Callback Number Dependencies
GETGet a Workspace Emergency Callback Number
PUTUpdate a Workspace Emergency Callback Number
GETRetrieve Workspace Emergency Callback Number Dependencies
GETGet Dependencies for a Virtual Line Emergency Callback Number
GETGet the Virtual Line's Emergency Callback settings
PUTUpdate a Virtual Line's Emergency Callback settings
Features: Announcement PlaylistFeatures: Announcement RepositoryFeatures: Auto AttendantFeatures: Call ParkFeatures: Call PickupFeatures: Call QueueFeatures: Call RecordingFeatures: Customer Experience EssentialsFeatures: Hunt GroupFeatures: Operating ModesFeatures: Paging GroupFeatures: Single Number ReachLocation Call SettingsLocation Call Settings: Call HandlingLocation Call Settings: SchedulesLocation Call Settings: VoicemailLocationsNumbersPSTNPartner Reports/TemplatesPeopleRecording ReportReportsReports: Detailed Call HistorySend Activation EmailUser Call SettingsVirtual Line Call SettingsWorkspace Call SettingsWorkspaces
Webex for Broadworks
Overview
Guides
Integrations and AuthorizationDeveloper's Guide
Reference
BroadWorks Billing ReportsBroadWorks EnterprisesBroadWorks SubscribersBroadWorks Workspaces
Webex for Wholesale
Overview
Guides
Developer's Guide
Reference
Wholesale Billing ReportsWholesale Provisioning
Webex for UCM
Guides
Integrations and Authorization
Reference
UCM Profile
Contact Center
Overview
Reference
Data Sources
Customer Journey Data
Overview
Guides
Getting StartedFAQ
Devices
Overview
Guides
Devices
Reference
Device Call SettingsDevice ConfigurationsDevicesWorkspace LocationsWorkspace MetricsWorkspace PersonalizationWorkspacesxAPI
Directory Services
Reference
Domain ManagementIdentity Organization
Meetings
Overview
Guides
Integrations and AuthorizationWebhooksWebinar GuideMeeting Resource Guide
Reference
Meeting ChatsMeeting Closed CaptionsMeeting InviteesMeeting MessagesMeeting ParticipantsMeeting PollsMeeting PreferencesMeeting Q and AMeeting QualitiesMeeting TranscriptsMeetingsMeetings Summary ReportPeopleRecording ReportRecordingsSession TypesTracking CodesVideo MeshWebhooks
Messaging
Overview
Guides
BotsIntegrations and AuthorizationWebhooksButtons and Cards
Reference
Attachment ActionsEventsMembershipsMessagesPeopleRoom TabsRoomsTeam MembershipsTeamsWebhooks
SCIM 2
Overview
Reference
SCIM 2 BulkSCIM 2 GroupsSCIM 2 Users
Workspace Integrations
OverviewTechnical DetailsControl Hub Features
Webex Status API
Full API Reference
Admin Audit EventsAttachment ActionsAuthorizationsBroadWorks Billing ReportsBroadWorks EnterprisesBroadWorks SubscribersBroadWorks WorkspacesCall ControlsCall RoutingCall Settings For MeCalling Service SettingsClient Call SettingsConference ControlsConverged RecordingsDECT Devices SettingsData SourcesDevice Call SettingsDevice ConfigurationsDevicesDomain ManagementEmergency Services Settings
PUTUpdate RedSky Service Settings
POSTCreate an Account and Admin in RedSky
GETRetrieve RedSky Account Details for an Organization
PUTUpdate the Organization RedSky Account's Compliance Status
GETGet the Organization Compliance Status and the Location Status List
GETGet the Organization Compliance Status for a RedSky Account
POSTLogin to a RedSky Admin Account
GETGet a Location's RedSky Emergency Calling Parameters
GETGet a Location's RedSky Compliance Status
PUTUpdate a Location's RedSky Compliance Status
POSTCreate a RedSky Building Address and Alert Email for a Location
PUTUpdate a RedSky Building Address for a Location
GETGet an Organization Emergency Call Notification
PUTUpdate an Organization Emergency Call Notification
GETGet a Location Emergency Call Notification
PUTUpdate a Location Emergency Call Notification
GETGet Dependencies for a Hunt Group Emergency Callback Number
GETGet a Person's Emergency Callback Number
PUTUpdate a Person's Emergency Callback Number
GETRetrieve A Person's Emergency Callback Number Dependencies
GETGet a Workspace Emergency Callback Number
PUTUpdate a Workspace Emergency Callback Number
GETRetrieve Workspace Emergency Callback Number Dependencies
GETGet Dependencies for a Virtual Line Emergency Callback Number
GETGet the Virtual Line's Emergency Callback settings
PUTUpdate a Virtual Line's Emergency Callback settings
EventsFeatures: Announcement PlaylistFeatures: Announcement RepositoryFeatures: Auto AttendantFeatures: Call ParkFeatures: Call PickupFeatures: Call QueueFeatures: Call RecordingFeatures: Customer Experience EssentialsFeatures: Hunt GroupFeatures: Operating ModesFeatures: Paging GroupFeatures: Single Number ReachGroupsGuests ManagementHistorical AnalyticsHybrid ClustersHybrid ConnectorsIdentity OrganizationIssuesLicensesLocation Call SettingsLocation Call Settings: Call HandlingLocation Call Settings: SchedulesLocation Call Settings: VoicemailLocationsMeeting ChatsMeeting Closed CaptionsMeeting InviteesMeeting MessagesMeeting ParticipantsMeeting PollsMeeting PreferencesMeeting Q and AMeeting QualitiesMeeting TranscriptsMeetingsMeetings Summary ReportMembershipsMessagesNumbersOrganization ContactsOrganizationsPSTNPartner ManagementPartner Reports/TemplatesPartner TagsPeopleRecording ReportRecordingsReport TemplatesReportsReports: Detailed Call HistoryResource Group MembershipsResource GroupsRolesRoom TabsRoomsSCIM 2 BulkSCIM 2 GroupsSCIM 2 UsersSecurity Audit EventsSend Activation EmailSession TypesSettingsSiteSpace ClassificationsTeam MembershipsTeamsTracking CodesUCM ProfileUser Call SettingsVideo MeshVirtual Line Call SettingsWebhooksWholesale Billing ReportsWholesale ProvisioningWorkspace Call SettingsWorkspace LocationsWorkspace MetricsWorkspace PersonalizationWorkspacesxAPI
API Changelog
SDKs
Space Meetings Migration
Calling
Introduction
Platform
Web
IntroductionQuickstart
Basics
AuthorizationCore ConceptsCalls
Advanced Features
Call SettingsContactsSupplementary ServicesVoicemailBackground Noise Reduction
Kitchen Sink
Meetings
Introduction
Platform
Web
IntroductionQuickstart
Basics
AuthorizationJoin a MeetingMigration To Improved MeetingsPasswords & CaptchasUnified Space Meetings
Advanced Features
Advanced ControlsDialing In and OutStreams & EffectsVideo Resolution
Multistream
Multistream Comprehensive GuideMultistream Quickstart
Migrating SDK V2 to V3
iOSAndroidBrowserNode.jsClick to Call
Developer CommunityCertifications

Update a Virtual Line's Emergency Callback settings

Update the emergency callback number settings for a specific virtual line.

Virtual line is a capability in Webex Calling that allows administrators to configure multiple lines for Webex Calling users.

To update virtual line callback number requires a full or user administrator auth token with a scope of spark-admin:telephony_config_write.

PUT/v1/telephony/config/virtualLines/{virtualLineId}/emergencyCallbackNumber
URI Parameters
virtualLineId
stringrequired

Unique identifier for the virtual line.

Query Parameters
orgId
string

List virtual lines for this organization.

Body Parameters
selected
CallBackSelectedPatchrequired

The source from which the emergency calling line ID (CLID) is selected for an actual emergency call.

DIRECT_LINE
string

Returned calls from the Public Safety Answering Point go directly to the member. The Emergency Service Address configured by the PSTN to the member's phone is specific to the member’s location.

LOCATION_ECBN
string

Each location can have an ECBN configured that is different from the location’s main number. Location Default ECBN is typically configured for users without dedicated telephone numbers or with only an extension.

LOCATION_MEMBER_NUMBER
string

Configure one user with another user’s telephone number as an ECBN. This option is used in place of a location’s main number when the location has multiple floors or buildings. This allows the ECBN assigned to have a more accurate Emergency Service Address associated with it.

locationMemberId
string

Member ID of person/workspace/virtual line/hunt group within the location. Required when selected is LOCATION_MEMBER_NUMBER.

Response Codes

The list below describes the common success and error responses you should expect from the API:

CodeStatusDescription
200OKSuccessful request with body content.
201CreatedThe request has succeeded and has led to the creation of a resource.
202AcceptedThe request has been accepted for processing.
204No ContentSuccessful request without body content.
400Bad RequestThe request was invalid or cannot be otherwise served. An accompanying error message will explain further.
401UnauthorizedAuthentication credentials were missing or incorrect.
403ForbiddenThe request is understood, but it has been refused or access is not allowed.
404Not FoundThe URI requested is invalid or the resource requested, such as a user, does not exist. Also returned when the requested format is not supported by the requested method.
405Method Not AllowedThe request was made to a resource using an HTTP request method that is not supported.
409ConflictThe request could not be processed because it conflicts with some established rule of the system. For example, a person may not be added to a room more than once.
410GoneThe requested resource is no longer available.
415Unsupported Media TypeThe request was made to a resource without specifying a media type or used a media type that is not supported.
423LockedThe requested resource is temporarily unavailable. A Retry-After header may be present that specifies how many seconds you need to wait before attempting the request again.
428Precondition RequiredFile(s) cannot be scanned for malware and need to be force downloaded.
429Too Many RequestsToo many requests have been sent in a given amount of time and the request has been rate limited. A Retry-After header should be present that specifies how many seconds you need to wait before a successful request can be made.
500Internal Server ErrorSomething went wrong on the server. If the issue persists, feel free to contact the Webex Developer Support team.
502Bad GatewayThe server received an invalid response from an upstream server while processing the request. Try again later.
503Service UnavailableServer is overloaded with requests. Try again later.
504Gateway TimeoutAn upstream server failed to respond on time. If your query uses max parameter, please try to reduce it.
  • Try it
  • Example
PUT
/v1/telephony/config/virtualLines//emergencyCallbackNumber{?orgId}
Log in to try the API.
Header
Query Parameters
  • List virtual lines for this organization.
Body
  • The source from which the emergency calling line ID (CLID) is selected for an actual emergency call.
  • Member ID of person/workspace/virtual line/hunt group within the location. Required when `selected` is `LOCATION_MEMBER_NUMBER`.
  • Request
  • Response
https://webexapis.com/v1/telephony/config/virtualLines/Y2lzY29zcGFyazovL3VzL1ZJUlRVQUxfTElORS84ZDRkMDNlYS03NTUzLTQ0NTgtYmI4OS02YzExNzgyMzA4OWY=/emergencyCallbackNumber?orgId=Y2lzY29zcGFyazovL3VzL09SR0FOSVpBVElPTi85NmFiYzJhYS0zZGNjLTExZTUtYTE1Mi1mZTM0ODE5Y2RjOWE
{
    "selected": "LOCATION_MEMBER_NUMBER",
    "locationMemberId": "Y2lzY29zcGFyazovL3VzL1BMQUNFLzExYTNmOTkwLWE2ODktNDc3ZC1iZTZiLTcxMjAwMjVkOGFiYg"
}
204 / No Content

Connect

Support

Developer Community

Developer Events

Contact Sales

Handy Links

Webex Ambassadors

Webex App Hub

Resources

Open Source Bot Starter Kits

Download Webex

DevNet Learning Labs

Terms of Service

Privacy Policy

Cookie Policy

Trademarks

© 2025 Cisco and/or its affiliates. All rights reserved.