diff --git a/.changeset/fluffy-windows-train.md b/.changeset/fluffy-windows-train.md
new file mode 100644
index 0000000000000..23aa227e49fd9
--- /dev/null
+++ b/.changeset/fluffy-windows-train.md
@@ -0,0 +1,5 @@
+---
+'@rocket.chat/meteor': major
+---
+
+Removes deprecated `voip-freeswitch.extension.assign`
diff --git a/apps/meteor/ee/app/api-enterprise/server/voip-freeswitch.ts b/apps/meteor/ee/app/api-enterprise/server/voip-freeswitch.ts
index dd7999286de30..1bf64934910a9 100644
--- a/apps/meteor/ee/app/api-enterprise/server/voip-freeswitch.ts
+++ b/apps/meteor/ee/app/api-enterprise/server/voip-freeswitch.ts
@@ -1,7 +1,6 @@
 import { VoipFreeSwitch } from '@rocket.chat/core-services';
 import { Users } from '@rocket.chat/models';
 import {
-	isVoipFreeSwitchExtensionAssignProps,
 	isVoipFreeSwitchExtensionGetDetailsProps,
 	isVoipFreeSwitchExtensionGetInfoProps,
 	isVoipFreeSwitchExtensionListProps,
@@ -62,50 +61,6 @@ API.v1.addRoute(
 	},
 );
 
-API.v1.addRoute(
-	'voip-freeswitch.extension.assign',
-	{
-		authRequired: true,
-		permissionsRequired: ['manage-voip-extensions'],
-		validateParams: isVoipFreeSwitchExtensionAssignProps,
-		deprecation: {
-			version: '8.0.0',
-			alternatives: ['/v1/users.update'],
-		},
-		license: ['voip-enterprise'],
-	},
-	{
-		async post() {
-			if (!settings.get('VoIP_TeamCollab_Enabled')) {
-				throw new Error('error-voip-disabled');
-			}
-
-			const { extension, username } = this.bodyParams;
-
-			if (!username) {
-				return API.v1.notFound();
-			}
-
-			const user = await Users.findOneByUsername(username, { projection: { freeSwitchExtension: 1 } });
-			if (!user) {
-				return API.v1.notFound();
-			}
-
-			const existingUser = extension && (await Users.findOneByFreeSwitchExtension(extension, { projection: { _id: 1 } }));
-			if (existingUser && existingUser._id !== user._id) {
-				throw new Error('error-extension-not-available');
-			}
-
-			if (extension && user.freeSwitchExtension === extension) {
-				return API.v1.success();
-			}
-
-			await Users.setFreeSwitchExtension(user._id, extension);
-			return API.v1.success();
-		},
-	},
-);
-
 API.v1.addRoute(
 	'voip-freeswitch.extension.getDetails',
 	{
diff --git a/packages/rest-typings/src/v1/voip-freeswitch/VoipFreeSwitchExtensionAssignProps.ts b/packages/rest-typings/src/v1/voip-freeswitch/VoipFreeSwitchExtensionAssignProps.ts
deleted file mode 100644
index 7fcaf6c6a9a18..0000000000000
--- a/packages/rest-typings/src/v1/voip-freeswitch/VoipFreeSwitchExtensionAssignProps.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-import type { JSONSchemaType } from 'ajv';
-import Ajv from 'ajv';
-
-const ajv = new Ajv();
-
-export type VoipFreeSwitchExtensionAssignProps = { username: string; extension?: string };
-
-const voipFreeSwitchExtensionAssignPropsSchema: JSONSchemaType<VoipFreeSwitchExtensionAssignProps> = {
-	type: 'object',
-	properties: {
-		username: {
-			type: 'string',
-			nullable: false,
-		},
-		extension: {
-			type: 'string',
-			nullable: true,
-		},
-	},
-	required: ['username'],
-	additionalProperties: false,
-};
-
-export const isVoipFreeSwitchExtensionAssignProps = ajv.compile(voipFreeSwitchExtensionAssignPropsSchema);
diff --git a/packages/rest-typings/src/v1/voip-freeswitch/index.ts b/packages/rest-typings/src/v1/voip-freeswitch/index.ts
index 013e4e0351cbb..983dede04b23a 100644
--- a/packages/rest-typings/src/v1/voip-freeswitch/index.ts
+++ b/packages/rest-typings/src/v1/voip-freeswitch/index.ts
@@ -1,11 +1,9 @@
 import type { FreeSwitchExtension } from '@rocket.chat/core-typings';
 
-import type { VoipFreeSwitchExtensionAssignProps } from './VoipFreeSwitchExtensionAssignProps';
 import type { VoipFreeSwitchExtensionGetDetailsProps } from './VoipFreeSwitchExtensionGetDetailsProps';
 import type { VoipFreeSwitchExtensionGetInfoProps } from './VoipFreeSwitchExtensionGetInfoProps';
 import type { VoipFreeSwitchExtensionListProps } from './VoipFreeSwitchExtensionListProps';
 
-export * from './VoipFreeSwitchExtensionAssignProps';
 export * from './VoipFreeSwitchExtensionGetDetailsProps';
 export * from './VoipFreeSwitchExtensionGetInfoProps';
 export * from './VoipFreeSwitchExtensionListProps';
@@ -17,9 +15,6 @@ export type VoipFreeSwitchEndpoints = {
 	'/v1/voip-freeswitch.extension.getDetails': {
 		GET: (params: VoipFreeSwitchExtensionGetDetailsProps) => FreeSwitchExtension & { userId?: string; username?: string; name?: string };
 	};
-	'/v1/voip-freeswitch.extension.assign': {
-		POST: (params: VoipFreeSwitchExtensionAssignProps) => void;
-	};
 	'/v1/voip-freeswitch.extension.getRegistrationInfoByUserId': {
 		GET: (params: VoipFreeSwitchExtensionGetInfoProps) => {
 			extension: FreeSwitchExtension;