SystemKeeper · Oct 15, 2026 · Jul 7, 2026 · Jul 9, 2026 · Jul 9, 2026 · Sep 18, 2026
diff --git a/docs/settings.md b/docs/settings.md
@@ -81,7 +81,7 @@ Legend:
 | `sip_bridge_dialin_info`             | string                                                           |            | Yes  | 🖌️    | Additional information added in the SIP dial-in invitation mail and sidebar                                                                                                                                                                                                      |
 | `sip_bridge_dialout_anonymous`       | bool                                                             | false      | No   |        | When set to true, all out-going SIP calls will be anonymous calls (CLIR)                                                                                                                                                                                                         |
 | `sip_bridge_dialout_number`          | string                                                           |            | No   |        | Fallback phone number that is used as caller for out-going calls when the user has no phone-number configured (has to be E164 `+49123456789` formatted)                                                                                                                          |
-| `sip_bridge_dialout_prefix`          | string                                                           | `+`        | No   |        | Prefix that is added before the first configured phone-number of a user to make it a valid E164 number to be used as a caller for out-going calls                                                                                                                                |
+| `sip_bridge_dialout_prefix`          | string                                                           | `+`        | No   |        | Deprecated: Only used for direct dial-in from older SIP bridges, which send phone numbers without this prefix                                                                                                                                                                    |
 | `sip_bridge_shared_secret`           | string                                                           |            | Yes  | 🖌️    | Shared secret allowing the SIP bridge to authenticate on the Nextcloud server                                                                                                                                                                                                    |
 | `signaling_ticket_secret`            | string                                                           |            | Yes  |        | Secret used to secure the signaling tickets for guests (255 character random string)                                                                                                                                                                                             |
 | `signaling_token_alg`                | string<br>`ES256`, `ES384`, `RS256`, `RS384`, `RS512` or `EdDSA` | `ES256`    | Yes  |        | Algorithm for the signaling tickets                                                                                                                                                                                                                                              |

diff --git a/lib/Command/PhoneNumber/AddPhoneNumber.php b/lib/Command/PhoneNumber/AddPhoneNumber.php
@@ -66,8 +66,15 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 		}
 		$userId = $user->getUID();
 
+		$phoneNumber = $this->phoneNumberValidation->cleanNumber($phoneNumber);
+
+		if ($phoneNumber === '') {
+			$output->writeln('<error>Phone number is invalid.</error>');
+			return self::FAILURE;
+		}
+
 		try {
-			$phoneNumber = $this->phoneNumberValidation->validateNumber($phoneNumber);
+			$this->phoneNumberValidation->validateNumber($phoneNumber);
 		} catch (\InvalidArgumentException) {
 			$output->writeln('<error>Not a valid phone number ' . $phoneNumber . '. The format is invalid.</error>');
 			return self::FAILURE;

diff --git a/lib/Command/PhoneNumber/FindPhoneNumber.php b/lib/Command/PhoneNumber/FindPhoneNumber.php
@@ -10,6 +10,7 @@
 
 use OC\Core\Command\Base;
 use OCA\Talk\Model\PhoneNumberMapper;
+use OCA\Talk\Service\PhoneNumberValidation;
 use OCP\AppFramework\Db\DoesNotExistException;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
@@ -19,6 +20,7 @@ class FindPhoneNumber extends Base {
 
 	public function __construct(
 		private PhoneNumberMapper $mapper,
+		private PhoneNumberValidation $phoneNumberValidation,
 	) {
 		parent::__construct();
 	}
@@ -48,6 +50,8 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 		$userId = (string)$input->getOption('user');
 
 		if ($phoneNumber !== '') {
+			$phoneNumber = $this->phoneNumberValidation->cleanNumber($phoneNumber);
+
 			try {
 				$entry = $this->mapper->findByPhoneNumber($phoneNumber);
 			} catch (DoesNotExistException) {

diff --git a/lib/Command/PhoneNumber/ImportPhoneNumbers.php b/lib/Command/PhoneNumber/ImportPhoneNumbers.php
@@ -72,8 +72,10 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 				continue;
 			}
 
+			$row[0] = $this->phoneNumberValidation->cleanNumber($row[0]);
+
 			try {
-				$row[0] = $this->phoneNumberValidation->validateNumber($row[0]);
+				$this->phoneNumberValidation->validateNumber($row[0]);
 			} catch (\InvalidArgumentException) {
 				$output->writeln('<error>Not a valid phone number ' . $row[0] . '. The format is invalid.</error>');
 				return self::FAILURE;

diff --git a/lib/Command/PhoneNumber/RemovePhoneNumber.php b/lib/Command/PhoneNumber/RemovePhoneNumber.php
@@ -10,6 +10,7 @@
 
 use OC\Core\Command\Base;
 use OCA\Talk\Model\PhoneNumberMapper;
+use OCA\Talk\Service\PhoneNumberValidation;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -18,6 +19,7 @@ class RemovePhoneNumber extends Base {
 
 	public function __construct(
 		private PhoneNumberMapper $mapper,
+		private PhoneNumberValidation $phoneNumberValidation,
 	) {
 		parent::__construct();
 	}
@@ -36,7 +38,13 @@ protected function configure(): void {
 	}
 
 	protected function execute(InputInterface $input, OutputInterface $output): int {
-		$phoneNumber = $input->getArgument('phone');
+		$phoneNumber = $this->phoneNumberValidation->cleanNumber($input->getArgument('phone'));
+
+		if ($phoneNumber === '') {
+			$output->writeln('<error>Phone number is invalid.</error>');
+			return self::FAILURE;
+		}
+
 		$this->mapper->deleteByPhoneNumber($phoneNumber);
 		return self::SUCCESS;
 	}

diff --git a/lib/Controller/CallController.php b/lib/Controller/CallController.php
@@ -437,14 +437,12 @@ public function sipDialOut(int $attendeeId): DataResponse {
 		}
 
 		// No elseif, so we have the fallback to sip_bridge_dialout_number when the caller is no user or doesn't have a number
-		if ($callerNumber !== false && $this->appConfig->getAppValueString('sip_bridge_dialout_prefix', '+') !== '') {
+		if ($callerNumber !== false) {
 			$attendee = $this->participant->getAttendee();
 			if ($attendee->getActorType() === Attendee::ACTOR_USERS) {
 				$numbers = $this->phoneNumberMapper->findByUser($attendee->getActorId());
 				if (!empty($numbers)) {
-					$number = array_shift($numbers);
-					$callerNumber = $this->appConfig->getAppValueString('sip_bridge_dialout_prefix', '+');
-					$callerNumber .= $number->getPhoneNumber();
+					$callerNumber = array_shift($numbers)->getPhoneNumber();
 				}
 			}
 		}

diff --git a/lib/Controller/RoomController.php b/lib/Controller/RoomController.php
@@ -2363,12 +2363,26 @@ public function directDialIn(string $phoneNumber, string $caller): DataResponse
 		try {
 			$entity = $this->phoneService->getAccountToCallForPhoneNumber($phoneNumber);
 		} catch (DoesNotExistException) {
-			$this->logger->info('No account found for direct dial-in with number: ' . $phoneNumber);
-			return new DataResponse(null, Http::STATUS_NOT_FOUND);
+			$dialoutPrefix = $this->appConfig->getAppValueString('sip_bridge_dialout_prefix', '+');
+
+			if ($dialoutPrefix === '') {
+				$this->logger->info('No account found for direct dial-in with number: ' . $phoneNumber);
+				return new DataResponse(null, Http::STATUS_NOT_FOUND);
+			}
+
+			try {
+				// Try to find the number with added dialout prefix as a fallback for old sip-bridges
+				// TODO: Log as error in 26, remove fallback and dialout prefix with 27
+				$entity = $this->phoneService->getAccountToCallForPhoneNumber($dialoutPrefix . $phoneNumber);
+			} catch (DoesNotExistException) {
+				$this->logger->info('No account found for direct dial-in with number: ' . $phoneNumber);
+				return new DataResponse(null, Http::STATUS_NOT_FOUND);
+			}
+
+			$this->logger->warning('Found account for direct dial-in only by adding the dial-out prefix. Please adjust the mapping for number: ' . $phoneNumber);
 		}
 
 		$caller = trim($caller);
-		// TODO: Use later and get name from addressbook? $cleanedCaller = $this->phoneNumberUtil->convertToStandardFormat($caller);
 		$user = $this->userManager->get($entity->getActorId());
 		try {
 			$room = $this->roomService->createConversation(
@@ -2384,7 +2398,14 @@ public function directDialIn(string $phoneNumber, string $caller): DataResponse
 			return new DataResponse(null, Http::STATUS_INTERNAL_SERVER_ERROR);
 		}
 
-		$participant = $this->participantService->joinRoomAsNewGuest($this->roomService, $room, '', true, displayName: $caller);
+		$participant = $this->participantService->joinRoomAsNewGuest(
+			$this->roomService,
+			$room,
+			'',
+			true,
+			displayName: $caller,
+			phoneNumber: $caller,
+		);
 		return new DataResponse($this->formatRoom($room, $participant));
 	}
 

diff --git a/lib/Migration/Version23001Date20260918142246.php b/lib/Migration/Version23001Date20260918142246.php
@@ -0,0 +1,79 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Talk\Migration;
+
+use Closure;
+use OCP\AppFramework\Services\IAppConfig;
+use OCP\DB\Exception;
+use OCP\DB\ISchemaWrapper;
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\IDBConnection;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+use Override;
+
+class Version23001Date20260918142246 extends SimpleMigrationStep {
+
+	public function __construct(
+		private readonly IDBConnection $connection,
+		private readonly IAppConfig $appConfig,
+	) {
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure(): ISchemaWrapper $schemaClosure
+	 * @param array $options
+	 */
+	#[Override]
+	public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options): void {
+		$dialoutPrefix = $this->appConfig->getAppValueString('sip_bridge_dialout_prefix', '+');
+
+		if ($dialoutPrefix === '') {
+			return;
+		}
+
+		$query = $this->connection->getQueryBuilder();
+		$query->select('id', 'phone_number')
+			->from('talk_phone_numbers');
+
+		$phoneNumbers = [];
+		$result = $query->executeQuery();
+		while ($row = $result->fetchAssociative()) {
+			$phoneNumbers[(int)$row['id']] = (string)$row['phone_number'];
+		}
+		$result->closeCursor();
+
+		$update = $this->connection->getQueryBuilder();
+		$update->update('talk_phone_numbers')
+			->set('phone_number', $update->createParameter('phone_number'))
+			->where($update->expr()->eq('id', $update->createParameter('id')));
+
+		foreach ($phoneNumbers as $id => $phoneNumber) {
+			if (strlen($phoneNumber) < 6
+				// Numbers added before the leading + was stripped already have it
+				|| str_starts_with($phoneNumber, '+')
+				|| str_starts_with($phoneNumber, $dialoutPrefix)) {
+				continue;
+			}
+
+			$update->setParameter('phone_number', $dialoutPrefix . $phoneNumber)
+				->setParameter('id', $id, IQueryBuilder::PARAM_INT);
+			try {
+				$update->executeStatement();
+			} catch (Exception $e) {
+				if ($e->getReason() !== Exception::REASON_UNIQUE_CONSTRAINT_VIOLATION) {
+					throw $e;
+				}
+				$output->warning('Phone number ' . $phoneNumber . ' was not migrated, because ' . $dialoutPrefix . $phoneNumber . ' is already assigned');
+			}
+		}
+	}
+}
diff --git a/lib/Service/ParticipantService.php b/lib/Service/ParticipantService.php
@@ -483,7 +483,7 @@ public function joinRoomAsFederatedUser(Room $room, string $actorType, string $a
 	 * @throws InvalidPasswordException
 	 * @throws UnauthorizedException
 	 */
-	public function joinRoomAsNewGuest(RoomService $roomService, Room $room, string $password, bool $passedPasswordProtection = false, ?Participant $previousParticipant = null, ?string $displayName = null): Participant {
+	public function joinRoomAsNewGuest(RoomService $roomService, Room $room, string $password, bool $passedPasswordProtection = false, ?Participant $previousParticipant = null, ?string $displayName = null, ?string $phoneNumber = null): Participant {
 		$event = new BeforeGuestJoinedRoomEvent($room, $password, $passedPasswordProtection);
 		$this->dispatcher->dispatchTyped($event);
 
@@ -516,6 +516,10 @@ public function joinRoomAsNewGuest(RoomService $roomService, Room $room, string
 			if ($displayName !== null && $displayName !== '') {
 				$attendee->setDisplayName($displayName);
 			}
+			if ($phoneNumber !== null && $phoneNumber !== '') {
+				$attendee->setPhoneNumber($phoneNumber);
+				$attendee->setActorType(Attendee::ACTOR_PHONES);
+			}
 
 			$this->attendeeMapper->insert($attendee);
 

diff --git a/lib/Service/PhoneNumberValidation.php b/lib/Service/PhoneNumberValidation.php
@@ -23,20 +23,17 @@ public function __construct(
 	 * Validate input as a phone number
 	 *
 	 * - Local number: allow
-	 * - International number
-	 *      a. If valid, strip + and allow
-	 *      b. If invalid, throw
+	 * - International number: If invalid, throw
 	 * @throws \InvalidArgumentException When the number is invalid
 	 */
-	public function validateNumber(string $phoneNumber): string {
-
+	public function validateNumber(string $phoneNumber): void {
 		if (
 			// Not an internation number
 			!str_starts_with($phoneNumber, '0')
 			// And matches a local number or dial-through
 			&& preg_match('/^[0-9]{1,20}$/', $phoneNumber)
 		) {
-			return $phoneNumber;
+			return;
 		}
 
 		$defaultRegion = $this->config->getSystemValueString('default_phone_region') ?: null;
@@ -45,11 +42,14 @@ public function validateNumber(string $phoneNumber): string {
 		if ($standardPhoneNumber === null) {
 			throw new \InvalidArgumentException();
 		}
+	}
 
-		if (str_starts_with($standardPhoneNumber, '+')) {
-			return substr($standardPhoneNumber, 1);
-		}
-
-		throw new \InvalidArgumentException();
+	/**
+	 * Removes any character that is not a number or "+"
+	 *
+	 * @param string $phoneNumber Phonenumber to clean
+	 */
+	public function cleanNumber(string $phoneNumber): string {
+		return preg_replace('/[^0-9+]/', '', $phoneNumber) ?? '';
 	}
 }
diff --git a/lib/SetupCheck/SIPConfiguration.php b/lib/SetupCheck/SIPConfiguration.php
@@ -9,15 +9,13 @@
 namespace OCA\Talk\SetupCheck;
 
 use OCA\Talk\Config;
-use OCP\IDBConnection;
 use OCP\IL10N;
 use OCP\SetupCheck\ISetupCheck;
 use OCP\SetupCheck\SetupResult;
 
 class SIPConfiguration implements ISetupCheck {
 	public function __construct(
 		protected readonly Config $talkConfig,
-		protected readonly IDBConnection $connection,
 		protected readonly IL10N $l,
 	) {
 	}
@@ -42,30 +40,6 @@ public function run(): SetupResult {
 			return SetupResult::success($this->l->t('Using the SIP functionality requires a High-performance backend.'));
 		}
 
-		$query = $this->connection->getQueryBuilder();
-		$query->select('phone_number')
-			->from('talk_phone_numbers')
-			->where($query->expr()->like('phone_number', $query->createNamedParameter(
-				$this->connection->escapeLikeParameter('+') . '%'
-			)))
-			->orWhere($query->expr()->like('phone_number', $query->createNamedParameter(
-				$this->connection->escapeLikeParameter('0') . '%'
-			)));
-
-		$result = $query->executeQuery();
-		$invalidNumbers = $result->fetchFirstColumn();
-		$result->closeCursor();
-
-		if (!empty($invalidNumbers)) {
-			$message = $this->l->t("Assigned Talk phone numbers must not start with + or 0. Please remove or update the following numbers:\n{list}");
-			$message = str_replace(
-				'{list}',
-				implode("\n", $invalidNumbers),
-				$message
-			);
-			return SetupResult::error($message, 'https://portal.nextcloud.com/article/Nextcloud-Talk/Nextcloud-Talk-Phone/Direct-Dial-in#content-provisioning');
-		}
-
 		if ($this->talkConfig->getSIPSharedSecret() === '' && $this->talkConfig->getDialInInfo() === '') {
 			return SetupResult::info($this->l->t('No SIP backend configured'));
 		}

diff --git a/src/components/AdminSettings/SIPBridge.vue b/src/components/AdminSettings/SIPBridge.vue
@@ -63,7 +63,7 @@
 					:disabled="loading"
 					labelOutside />
 				<p class="settings-hint additional-top-margin">
-					{{ t('spreed', 'Prefix to configured user number for outgoing calls (default is `+`)') }}
+					{{ t('spreed', 'Deprecated: Only used for direct dial-in from older SIP bridges, which send phone numbers without this prefix (default is `+`)') }}
 				</p>
 			</template>