diff --git a/examples/pico/CMakeLists.txt b/examples/pico/CMakeLists.txt
index 5381860..52082ab 100644
--- a/examples/pico/CMakeLists.txt
+++ b/examples/pico/CMakeLists.txt
@@ -9,6 +9,7 @@ pico_sdk_init()
 
 include(FreeRTOS_Kernel_import.cmake)
 
+
 include(${CMAKE_CURRENT_LIST_DIR}/../../third_party/coreHTTP/httpFilePaths.cmake)
 include(${CMAKE_CURRENT_LIST_DIR}/../../third_party/coreMQTT/mqttFilePaths.cmake)
 include_directories(
@@ -93,7 +94,9 @@ target_compile_definitions(peer PRIVATE
   CONFIG_USE_LWIP=1
   CONFIG_USE_USRSCTP=0
   CONFIG_MBEDTLS_2_X=1
-  CONFIG_DATA_BUFFER_SIZE=4096
+  CONFIG_DATA_BUFFER_SIZE=512
+  CONFIG_AUDIO_BUFFER_SIZE=2048
+  CONFIG_SDP_BUFFER_SIZE=4096
   HTTP_DO_NOT_USE_CUSTOM_CONFIG
   MQTT_DO_NOT_USE_CUSTOM_CONFIG
 )
diff --git a/src/config.h b/src/config.h
index 83de727..4de3495 100644
--- a/src/config.h
+++ b/src/config.h
@@ -38,6 +38,18 @@
 #define CONFIG_DATA_BUFFER_SIZE (SCTP_MTU * 128)
 #endif
 
+#ifndef CONFIG_SDP_BUFFER_SIZE
+#define CONFIG_SDP_BUFFER_SIZE 8096
+#endif
+
+#ifndef CONFIG_MQTT_BUFFER_SIZE
+#define CONFIG_MQTT_BUFFER_SIZE 4096
+#endif
+
+#ifndef CONFIG_HTTP_BUFFER_SIZE
+#define CONFIG_HTTP_BUFFER_SIZE 4096
+#endif
+
 #define AUDIO_LATENCY 20  // ms
 #define KEEPALIVE_CONNCHECK 10000
 #define CONFIG_IPV6 0
diff --git a/src/peer_connection.c b/src/peer_connection.c
index 26920d4..56ec655 100644
--- a/src/peer_connection.c
+++ b/src/peer_connection.c
@@ -232,7 +232,7 @@ int peer_connection_send_audio(PeerConnection* pc, const uint8_t* buf, size_t le
 #if (CONFIG_AUDIO_BUFFER_SIZE) > 0
   return buffer_push_tail(pc->audio_rb, buf, len);
 #else
-  return rtp_encoder_encode(&pc->artp_encoder, data, bytes);
+  return rtp_encoder_encode(&pc->artp_encoder, buf, len);
 #endif
 }
 
diff --git a/src/peer_signaling.c b/src/peer_signaling.c
index 5e0176d..bd0fa53 100644
--- a/src/peer_signaling.c
+++ b/src/peer_signaling.c
@@ -18,12 +18,7 @@
 #define KEEP_ALIVE_TIMEOUT_SECONDS 60
 #define CONNACK_RECV_TIMEOUT_MS 1000
 
-#ifndef BUF_SIZE
-#define BUF_SIZE 2048
-#endif
-
 #define TOPIC_SIZE 128
-
 #define HOST_LEN 64
 #define CRED_LEN 128
 
@@ -47,8 +42,8 @@ typedef struct PeerSignaling {
   TransportInterface_t transport;
   NetworkContext_t net_ctx;
 
-  uint8_t mqtt_buf[BUF_SIZE];
-  uint8_t http_buf[BUF_SIZE];
+  uint8_t mqtt_buf[CONFIG_MQTT_BUFFER_SIZE];
+  uint8_t http_buf[CONFIG_HTTP_BUFFER_SIZE];
 
   char subtopic[TOPIC_SIZE];
   char pubtopic[TOPIC_SIZE];
diff --git a/src/sdp.h b/src/sdp.h
index ebebab8..ed91bcf 100644
--- a/src/sdp.h
+++ b/src/sdp.h
@@ -2,8 +2,8 @@
 #define SDP_H_
 
 #include <string.h>
+#include "config.h"
 
-#define SDP_CONTENT_LENGTH 10240
 #define SDP_ATTR_LENGTH 128
 
 #ifndef ICE_LITE
@@ -11,7 +11,7 @@
 #endif
 
 typedef struct Sdp {
-  char content[SDP_CONTENT_LENGTH];
+  char content[CONFIG_SDP_BUFFER_SIZE];
 
 } Sdp;