diff --git a/app/src/main/kotlin/com/tutpro/baresip/Config.kt b/app/src/main/kotlin/com/tutpro/baresip/Config.kt
index 4d79f8a3..418ee394 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/Config.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/Config.kt
@@ -53,6 +53,10 @@ object Config {
             BaresipService.addressFamily = addressFamily
         }
 
+        val transportProtocols = previousVariable("sip_transports")
+        if (transportProtocols != "")
+            config = "${config}sip_transports $transportProtocols\n"
+
         val sipCertificate = previousVariable("sip_certificate")
         if (sipCertificate != "")
             config = "${config}sip_certificate $sipCertificate\n"
diff --git a/app/src/main/kotlin/com/tutpro/baresip/SettingsScreen.kt b/app/src/main/kotlin/com/tutpro/baresip/SettingsScreen.kt
index c83c1fba..768eb259 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/SettingsScreen.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/SettingsScreen.kt
@@ -397,6 +397,34 @@ private fun SettingsContent(
         }
     }
 
+    @Composable
+    fun TransportProtocols() {
+        Row(
+            Modifier.fillMaxWidth().padding(end = 10.dp),
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.Start
+        ) {
+            val ctx = LocalContext.current
+            val transportProtocols by viewModel.transportProtocols.collectAsState()
+            OutlinedTextField(
+                value = transportProtocols,
+                onValueChange = {
+                    viewModel.transportProtocols.value = it
+                },
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .clickable {
+                        alertTitle.value = ctx.getString(R.string.transport_protocols)
+                        alertMessage.value = ctx.getString(R.string.transport_protocols_help)
+                        showAlert.value = true
+                    },
+                textStyle = androidx.compose.ui.text.TextStyle(fontSize = 18.sp),
+                label = { Text(stringResource(R.string.transport_protocols)) },
+                keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Text)
+            )
+        }
+    }
+
     @Composable
     fun DnsServers() {
         Row(
@@ -1193,6 +1221,7 @@ private fun SettingsContent(
         item { StartAutomatically() }
         item { ListenAddress() }
         item { AddressFamily() }
+        item { TransportProtocols() }
         item { DnsServers() }
         item { TlsCertificateFile(activity) }
         item { VerifyServer() }
@@ -1246,6 +1275,23 @@ private fun checkOnClick(ctx: Context, viewModel: SettingsViewModel): Boolean {
         restart = true
     }
 
+    val transportProtocols = viewModel.transportProtocols.value
+        .lowercase(Locale.ROOT).replace(" ", "")
+    if (transportProtocols != viewModel.oldTransportProtocols) {
+        if (!checkTransportProtocols(transportProtocols)) {
+            alertTitle.value = ctx.getString(R.string.notice)
+            alertMessage.value = "${ctx.getString(R.string.invalid_transport_protocols)}: " +
+                    transportProtocols
+            showAlert.value = true
+            return false
+        }
+        Config.removeVariable("sip_transports")
+        if (transportProtocols.isNotEmpty())
+            Config.replaceVariable("sip_transports", transportProtocols)
+        save = true
+        restart = true
+    }
+
     val dnsServers = addMissingPorts(viewModel.dnsServers.value
         .lowercase(Locale.ROOT).replace(" ", ""))
     if (dnsServers != viewModel.oldDnsServers) {
@@ -1414,6 +1460,15 @@ private fun addMissingPorts(addressList: String): String {
     return result.substring(1)
 }
 
+private fun checkTransportProtocols(transportProtocols: String): Boolean {
+    if (transportProtocols.isEmpty())
+        return true
+    for (protocol in transportProtocols.split(","))
+        if (protocol !in listOf("udp", "tcp", "tls", "ws", "wss"))
+            return false
+    return true
+}
+
 private fun checkDnsServers(dnsServers: String): Boolean {
     if (dnsServers.isEmpty()) return true
     for (server in dnsServers.split(","))
diff --git a/app/src/main/kotlin/com/tutpro/baresip/SettingsViewModel.kt b/app/src/main/kotlin/com/tutpro/baresip/SettingsViewModel.kt
index 848e4aca..da281b32 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/SettingsViewModel.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/SettingsViewModel.kt
@@ -18,8 +18,11 @@ class SettingsViewModel: ViewModel() {
     val autoStart = MutableStateFlow(false)
     val listenAddress = MutableStateFlow("")
     val addressFamily = MutableStateFlow("")
-    val dnsServers = MutableStateFlow("")
 
+    val transportProtocols = MutableStateFlow("")
+    val oldTransportProtocols = Config.variable("sip_transports")
+
+    val dnsServers = MutableStateFlow("")
     val oldDnsServers = if (Config.variable("dyn_dns") == "yes")
         ""
     else {
@@ -59,6 +62,8 @@ class SettingsViewModel: ViewModel() {
             mutableIntStateOf(familyValues.indexOf(Config.variable("net_af").lowercase()))
         addressFamily.value = familyValues[itemPosition.intValue]
 
+        transportProtocols.value = oldTransportProtocols
+
         dnsServers.value = oldDnsServers
 
         tlsCertificateFile.value = File(BaresipService.filesPath + "/cert.pem").exists()
diff --git a/app/src/main/res/values-fi/strings.xml b/app/src/main/res/values-fi/strings.xml
index bbcb2f24..2110871f 100644
--- a/app/src/main/res/values-fi/strings.xml
+++ b/app/src/main/res/values-fi/strings.xml
@@ -338,6 +338,12 @@
         on valittu, baresip käyttää ainoastaan IPv4- tai IPv6-osoitteita. Jos kumpaakaan ei ole
         valittu, baresip käyttää sekä IPv4- että IPv6-osoitteita.
     </string>
+    <string name="transport_protocols">Kuljetusprotokollat</string>
+    <string name="transport_protocols_help">Pilkulla toisistaan erotettu lista tuettuja SIP sanomien
+        kuljetusprotokollia.  Jos jätetään tyhjäksi, oletusarvo on \'udp,tcp,tls,ws,wss\', joka
+        kaikki tuetut siirtoprotokollat.
+    </string>
+    <string name="invalid_transport_protocols">Virheellinen kuljetusprotokollalista</string>s
     <string name="dns_servers">DNS-palvelimet</string>
     <string name="dns_servers_help">Pilkulla toisistaan erotettu luettelo DNS-palvelijoiden
         osoitteita. Jos jätetään antamatta (oletus), osoitteet hankitaan dynaamisesti järjestelmästä.
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index fd93ed61..b4d461e8 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -324,6 +324,12 @@
         using.  If IPv4 or IPv6 is chosen, baresip uses only IPv4 or IPv6 addresses.  If neither is
         chosen, baresip uses both IPv4 and IPv6 addresses.
     </string>
+    <string name="transport_protocols">Transport Protocols</string>
+    <string name="transport_protocols_help">Comma separated list of supported SIP request/response
+        transport protocols. If left empty, default value is \'udp,tcp,tls,ws,wss\' that includes
+        all supported transport protocols.
+    </string>
+    <string name="invalid_transport_protocols">Invalid Transport Protocols list</string>
     <string name="dns_servers">DNS Servers</string>
     <string name="dns_servers_help">Comma separated list of addresses of DNS servers.  If not given,
         DNS server addresses are obtained dynamically from the system. Each DNS address is of form