diff --git a/crates/sdp-types/src/attributes/ice.rs b/crates/sdp-types/src/attributes/ice.rs
index 87bd717..0b8b5c3 100644
--- a/crates/sdp-types/src/attributes/ice.rs
+++ b/crates/sdp-types/src/attributes/ice.rs
@@ -74,12 +74,6 @@ impl IceUsernameFragment {
     }
 }
 
-impl fmt::Display for IceUsernameFragment {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "a=ice-ufrag:{}", self.ufrag)
-    }
-}
-
 /// Ice password attribute (`a=ice-pwd`)
 ///
 /// Session and Media Level attribute  
@@ -104,9 +98,3 @@ impl IcePassword {
         )(i)
     }
 }
-
-impl fmt::Display for IcePassword {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "a=ice-pwd:{}", self.pwd)
-    }
-}
diff --git a/crates/sdp-types/src/connection.rs b/crates/sdp-types/src/connection.rs
index 3b7127e..0a82c32 100644
--- a/crates/sdp-types/src/connection.rs
+++ b/crates/sdp-types/src/connection.rs
@@ -53,7 +53,7 @@ impl Connection {
 
 impl fmt::Display for Connection {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "c={}", self.address)?;
+        write!(f, "{}", self.address)?;
 
         match self.address {
             TaggedAddress::IP4(_) | TaggedAddress::IP4FQDN(_) => {
diff --git a/crates/sdp-types/src/media.rs b/crates/sdp-types/src/media.rs
index ed51d6b..61e35ff 100644
--- a/crates/sdp-types/src/media.rs
+++ b/crates/sdp-types/src/media.rs
@@ -127,7 +127,7 @@ impl Media {
 
 impl fmt::Display for Media {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "m={}", self.media_type)?;
+        write!(f, "{}", self.media_type)?;
 
         if let Some(ports_num) = &self.ports_num {
             write!(f, " {}/{} ", self.port, ports_num)?;
diff --git a/crates/sdp-types/src/media_description.rs b/crates/sdp-types/src/media_description.rs
index bc72c75..8e7ce2c 100644
--- a/crates/sdp-types/src/media_description.rs
+++ b/crates/sdp-types/src/media_description.rs
@@ -2,8 +2,8 @@ use crate::connection::Connection;
 use crate::media::Media;
 use crate::{bandwidth::Bandwidth, Rtcp};
 use crate::{
-    Direction, ExtMap, Fmtp, IceCandidate, IcePassword, IceUsernameFragment, RtpMap, SrtpCrypto,
-    UnknownAttribute,
+    Direction, ExtMap, Fmtp, IceCandidate, IcePassword, IceUsernameFragment, MediaType, RtpMap,
+    SrtpCrypto, TransportProtocol, UnknownAttribute,
 };
 use bytesstr::BytesStr;
 use std::fmt::{self, Debug};
@@ -67,10 +67,10 @@ pub struct MediaDescription {
 
 impl fmt::Display for MediaDescription {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "{}\r\n", self.media)?;
+        write!(f, "m={}\r\n", self.media)?;
 
         if let Some(conn) = &self.connection {
-            write!(f, "{}\r\n", conn)?;
+            write!(f, "c={}\r\n", conn)?;
         }
 
         for bw in &self.bandwidth {
@@ -100,11 +100,11 @@ impl fmt::Display for MediaDescription {
         }
 
         if let Some(ufrag) = &self.ice_ufrag {
-            write!(f, "{}\r\n", ufrag)?;
+            write!(f, "a=ice-ufrag:{}\r\n", ufrag.ufrag)?;
         }
 
         if let Some(pwd) = &self.ice_pwd {
-            write!(f, "{}\r\n", pwd)?;
+            write!(f, "a=ice-pwd:{}\r\n", pwd.pwd)?;
         }
 
         for candidate in &self.ice_candidates {
@@ -134,3 +134,34 @@ impl fmt::Display for MediaDescription {
         Ok(())
     }
 }
+
+impl MediaDescription {
+    /// Create media description which signals rejected media
+    pub fn rejected(media_type: MediaType) -> Self {
+        MediaDescription {
+            media: Media {
+                media_type,
+                port: 0,
+                ports_num: None,
+                proto: TransportProtocol::RtpAvp,
+                fmts: vec![],
+            },
+            connection: None,
+            bandwidth: vec![],
+            direction: Direction::Inactive,
+            rtcp: None,
+            rtcp_mux: false,
+            mid: None,
+            rtpmap: vec![],
+            fmtp: vec![],
+            ice_ufrag: None,
+            ice_pwd: None,
+            ice_candidates: vec![],
+            ice_end_of_candidates: false,
+            crypto: vec![],
+            extmap: vec![],
+            extmap_allow_mixed: false,
+            attributes: vec![],
+        }
+    }
+}
diff --git a/crates/sdp-types/src/parser.rs b/crates/sdp-types/src/parser.rs
index 0093433..2001c3d 100644
--- a/crates/sdp-types/src/parser.rs
+++ b/crates/sdp-types/src/parser.rs
@@ -109,7 +109,7 @@ impl Parser {
                     ice_end_of_candidates: false,
                     crypto: vec![],
                     extmap: vec![],
-                    // inherit extmap allow mixed attribute
+                    // inherit extmap allow mixed atr
                     extmap_allow_mixed: self.extmap_allow_mixed,
                     attributes: vec![],
                 });
@@ -127,7 +127,7 @@ impl Parser {
         line: &str,
     ) -> Result<(), ParseSessionDescriptionError> {
         if let Some((name, value)) = line.split_once(':') {
-            self.parse_attribute_with_value(src, line, name, value)?;
+            self.parse_attribute_with_value(src, name, value)?;
         } else {
             self.parse_attribute_without_value(src, line);
         }
@@ -138,7 +138,6 @@ impl Parser {
     fn parse_attribute_with_value(
         &mut self,
         src: &BytesStr,
-        line: &str,
         name: &str,
         value: &str,
     ) -> Result<(), ParseSessionDescriptionError> {
@@ -207,7 +206,7 @@ impl Parser {
                 }
             }
             "candidate" => {
-                let (_, candidate) = IceCandidate::parse(src.as_ref(), line).finish()?;
+                let (_, candidate) = IceCandidate::parse(src.as_ref(), value).finish()?;
 
                 if let Some(media_description) = self.media_descriptions.last_mut() {
                     media_description.ice_candidates.push(candidate);
@@ -266,7 +265,7 @@ impl Parser {
                 self.extmap_allow_mixed = true;
 
                 if let Some(media_description) = self.media_descriptions.last_mut() {
-                    media_description.extmap_allow_mixed = true;
+                    media_description.rtcp_mux = true;
                 }
             }
             "rtcp-mux" => {
diff --git a/crates/sdp-types/src/session_description.rs b/crates/sdp-types/src/session_description.rs
index 1f49223..39e7477 100644
--- a/crates/sdp-types/src/session_description.rs
+++ b/crates/sdp-types/src/session_description.rs
@@ -84,14 +84,14 @@ impl fmt::Display for SessionDescription {
         write!(f, "s={}\r\n", self.name)?;
 
         if let Some(conn) = &self.connection {
-            write!(f, "{conn}\r\n")?;
+            write!(f, "c={conn}\r\n")?;
         }
 
         for bw in &self.bandwidth {
             write!(f, "b={bw}\r\n")?;
         }
 
-        write!(f, "{}\r\n", self.time)?;
+        write!(f, "t={}\r\n", self.time)?;
 
         // omit direction here, since it is always written in media descriptions
 
@@ -116,11 +116,11 @@ impl fmt::Display for SessionDescription {
         }
 
         if let Some(ufrag) = &self.ice_ufrag {
-            write!(f, "{ufrag}\r\n")?;
+            write!(f, "a=ice-ufrag:{}\r\n", ufrag.ufrag)?;
         }
 
         if let Some(pwd) = &self.ice_pwd {
-            write!(f, "{pwd}\r\n")?;
+            write!(f, "a=ice-pwd:{}\r\n", pwd.pwd)?;
         }
 
         for attr in &self.attributes {
diff --git a/crates/sdp-types/src/time.rs b/crates/sdp-types/src/time.rs
index 1bd7abe..4f4483e 100644
--- a/crates/sdp-types/src/time.rs
+++ b/crates/sdp-types/src/time.rs
@@ -42,7 +42,7 @@ impl Time {
 
 impl fmt::Display for Time {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "t={} {}", self.start, self.stop)
+        write!(f, "{} {}", self.start, self.stop)
     }
 }