diff --git a/apps/app_confbridge.c b/apps/app_confbridge.c
index 86051cb4a3..59ad9fd903 100644
--- a/apps/app_confbridge.c
+++ b/apps/app_confbridge.c
@@ -182,7 +182,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 		<syntax>
 			<xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
 			<parameter name="Conference" required="true" />
-			<parameter name="Channel" required="true" />
+			<parameter name="Channel" required="true">
+				<para>If this parameter is not a complete channel name, the first channel with this prefix will be used.</para>
+			</parameter>
 		</syntax>
 		<description>
 		</description>
@@ -194,7 +196,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 		<syntax>
 			<xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
 			<parameter name="Conference" required="true" />
-			<parameter name="Channel" required="true" />
+			<parameter name="Channel" required="true">
+				<para>If this parameter is not a complete channel name, the first channel with this prefix will be used.</para>
+			</parameter>
 		</syntax>
 		<description>
 		</description>
@@ -264,7 +268,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 		<syntax>
 			<xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
 			<parameter name="Conference" required="true" />
-			<parameter name="Channel" required="true" />
+			<parameter name="Channel" required="true">
+				<para>If this parameter is not a complete channel name, the first channel with this prefix will be used.</para>
+			</parameter>
 		</syntax>
 		<description>
 		</description>
@@ -2421,7 +2427,10 @@ static char *handle_cli_confbridge_mute(struct ast_cli_entry *e, int cmd, struct
 		e->command = "confbridge mute";
 		e->usage =
 			"Usage: confbridge mute <conference> <channel>\n"
-			"       Mute a channel in a conference.\n";
+			"       Mute a channel in a conference.\n"
+			"       If the specified channel is a prefix,\n"
+			"       the action will be taken on the first\n"
+			"       matching channel.\n";
 		return NULL;
 	case CLI_GENERATE:
 		if (a->pos == 2) {
@@ -2448,7 +2457,10 @@ static char *handle_cli_confbridge_unmute(struct ast_cli_entry *e, int cmd, stru
 		e->command = "confbridge unmute";
 		e->usage =
 			"Usage: confbridge unmute <conference> <channel>\n"
-			"       Unmute a channel in a conference.\n";
+			"       Unmute a channel in a conference.\n"
+			"       If the specified channel is a prefix,\n"
+			"       the action will be taken on the first\n"
+			"       matching channel.\n";
 		return NULL;
 	case CLI_GENERATE:
 		if (a->pos == 2) {