diff --git a/tests/integration/features/bootstrap/FeatureContext.php b/tests/integration/features/bootstrap/FeatureContext.php
index 91a1c43c1707..dce6171b42aa 100644
--- a/tests/integration/features/bootstrap/FeatureContext.php
+++ b/tests/integration/features/bootstrap/FeatureContext.php
@@ -67,6 +67,8 @@ class FeatureContext implements Context, SnippetAcceptingContext {
 	protected static array $botNameToId;
 	/** @var array<string, string> */
 	protected static array $botNameToHash;
+	/** @var array<string, string> */
+	protected static array $phoneNumberToActorId;
 	/** @var array<string, mixed>|null */
 	protected static ?array $nextChatRequestParameters = null;
 
@@ -660,6 +662,9 @@ protected function assertAttendeeList(string $identifier, ?TableNode $formData,
 				if (isset($expectedKeys['displayName'])) {
 					$data['displayName'] = (string) $attendee['displayName'];
 				}
+				if (isset($expectedKeys['phoneNumber'])) {
+					$data['phoneNumber'] = (string) $attendee['phoneNumber'];
+				}
 
 				if (!isset(self::$userToAttendeeId[$identifier][$attendee['actorType']])) {
 					self::$userToAttendeeId[$identifier][$attendee['actorType']] = [];
@@ -678,6 +683,14 @@ protected function assertAttendeeList(string $identifier, ?TableNode $formData,
 					$attendee['actorId'] .= '@' . rtrim($this->baseRemoteUrl, '/');
 				}
 
+				if (isset($attendee['actorId'], $attendee['actorType'], $attendee['phoneNumber'])
+					&& $attendee['actorType'] === 'phones'
+					&& $attendee['actorId'] === 'PHONE(' . $actual['phoneNumber'] . ')'
+					&& $attendee['phoneNumber'] === $actual['phoneNumber']) {
+					$attendee['actorId'] = $actual['actorId'];
+					self::$phoneNumberToActorId[$attendee['phoneNumber']] = $actual['actorId'];
+				}
+
 				// Breakout room regex
 				if (isset($attendee['actorId']) && strpos($attendee['actorId'], '/') === 0 && preg_match($attendee['actorId'], $actual['actorId'])) {
 					$attendee['actorId'] = $actual['actorId'];
@@ -686,6 +699,10 @@ protected function assertAttendeeList(string $identifier, ?TableNode $formData,
 				if (isset($attendee['participantType'])) {
 					$attendee['participantType'] = (string)$this->mapParticipantTypeTestInput($attendee['participantType']);
 				}
+
+				if (isset($attendee['actorType']) && $attendee['actorType'] === 'phones') {
+					$attendee['participantType'] = (string)$this->mapParticipantTypeTestInput($attendee['participantType']);
+				}
 				return $attendee;
 			}, $formData->getHash(), $result);
 
@@ -1521,7 +1538,7 @@ public function userChangesListableScopeOfTheRoom(string $user, string $identifi
 	}
 
 	/**
-	 * @Then /^user "([^"]*)" adds (user|group|email|circle|remote) "([^"]*)" to room "([^"]*)" with (\d+) \((v4)\)$/
+	 * @Then /^user "([^"]*)" adds (user|group|email|circle|remote|phone) "([^"]*)" to room "([^"]*)" with (\d+) \((v4)\)$/
 	 *
 	 * @param string $user
 	 * @param string $newType
diff --git a/tests/integration/features/conversation-2/sip-dialout.feature b/tests/integration/features/conversation-2/sip-dialout.feature
new file mode 100644
index 000000000000..5ad447fe9402
--- /dev/null
+++ b/tests/integration/features/conversation-2/sip-dialout.feature
@@ -0,0 +1,41 @@
+Feature: conversation-2/sip-dialout
+  Background:
+    Given user "participant1" exists
+    Given user "participant2" exists
+    Given group "group1" exists
+    Given user "participant1" is member of group "group1"
+
+  Scenario: SIP admin uses dial out
+    Given the following "spreed" app config is set
+      | sip_bridge_dialin_info | +49-1234-567890 |
+      | sip_bridge_shared_secret | 1234567890abcdef |
+      | sip_bridge_groups | ["group1"] |
+      | sip_dialout | yes |
+    Given user "participant1" creates room "room" (v4)
+      | roomType | 3 |
+      | roomName | room |
+    And user "participant1" is participant of the following rooms (v4)
+      | id   | type | participantType | sipEnabled |
+      | room | 3    | 1               | 0          |
+    When user "participant1" adds user "participant2" to room "room" with 200 (v4)
+    When user "participant1" adds phone "+491601231212" to room "room" with 200 (v4)
+    Then user "participant1" sees the following attendees in room "room" with 200 (v4)
+      | participantType | inCall   | actorType | actorId           | displayName              | phoneNumber   |
+      | 3               | 0        | phones    | PHONE(+491601231212)     | +49160123…               | +491601231212 |
+      | 1               | 0        | users     | participant1      | participant1-displayname |               |
+      | 3               | 0        | users     | participant2      | participant2-displayname |               |
+    When user "participant2" adds phone "+491601231212" to room "room" with 403 (v4)
+
+  Scenario: Non-SIP admin tries to dial out
+    Given the following "spreed" app config is set
+      | sip_bridge_dialin_info | +49-1234-567890 |
+      | sip_bridge_shared_secret | 1234567890abcdef |
+      | sip_bridge_groups | ["group1"] |
+      | sip_dialout | yes |
+    Given user "participant2" creates room "room" (v4)
+      | roomType | 3 |
+      | roomName | room |
+    When user "participant2" adds phone "+491601231212" to room "room" with 501 (v4)
+    When user "participant2" adds user "participant1" to room "room" with 200 (v4)
+    # SIP admin that is not a moderator can also not dial-out
+    When user "participant1" adds phone "+491601231212" to room "room" with 403 (v4)