diff --git a/libs/ysig/q931.cpp b/libs/ysig/q931.cpp
index 8e1ff80d..adb4b283 100644
--- a/libs/ysig/q931.cpp
+++ b/libs/ysig/q931.cpp
@@ -1297,6 +1297,7 @@ SignallingEvent* ISDNQ931Call::processMsgSetup(ISDNQ931Message* msg)
     msg->params().setParam("callednumtype",m_data.m_calledType);
     msg->params().setParam("callednumplan",m_data.m_calledPlan);
     msg->params().setParam("overlapped",String::boolText(m_overlap));
+    msg->params().setParam("transfer-cap",m_data.m_transferCapability);
     return new SignallingEvent(SignallingEvent::NewCall,msg,this);
 }
 
@@ -1655,7 +1656,7 @@ bool ISDNQ931Call::sendSetup(SignallingMessage* sigMsg)
 	if (q931()->parserData().flag(ISDNQ931::ForceSendComplete))
 	    msg->appendSafe(new ISDNQ931IE(ISDNQ931IE::SendComplete));
 	// BearerCaps
-	m_data.m_transferCapability = "speech";
+	m_data.m_transferCapability = sigMsg->params().getValue(YSTRING("transfer-cap"), "speech");
 	m_data.m_transferMode = "circuit";
 	m_data.m_transferRate = "64kbit";
 	m_data.m_format = sigMsg->params().getValue(YSTRING("format"),q931()->format());
diff --git a/modules/server/ysigchan.cpp b/modules/server/ysigchan.cpp
index d0531297..ad5fafb4 100644
--- a/modules/server/ysigchan.cpp
+++ b/modules/server/ysigchan.cpp
@@ -1085,7 +1085,7 @@ SigChannel::SigChannel(SignallingEvent* event)
     // call.preroute message
     m_route = message("call.preroute",false,true);
     // Parameters to be copied to call.preroute
-    static String params = "caller,called,callername,format,formats,callernumtype,callernumplan,callerpres,callerscreening,callednumtype,callednumplan,inn,overlapped";
+    static String params = "caller,called,callername,format,formats,callernumtype,callernumplan,callerpres,callerscreening,callednumtype,callednumplan,inn,overlapped,transfer-cap";
     plugin.copySigMsgParams(*m_route,event,&params);
     if (m_route->getBoolValue("overlapped") && !m_route->getValue("called"))
 	m_route->setParam("called","off-hook");
@@ -1237,6 +1237,7 @@ bool SigChannel::startCall(Message& msg, SigTrunk* trunk)
     sigMsg->params().copyParam(msg,"callednumplan");
     sigMsg->params().copyParam(msg,"inn");
     sigMsg->params().copyParam(msg,"calledpointcode");
+    sigMsg->params().copyParam(msg,"transfer-cap");
     // Copy RTP parameters
     if (msg.getBoolValue("rtp_forward")) {
 	NamedList* tmp = new NamedList("rtp");