TLS Outgoing call - Transport error

```
What steps will reproduce the problem?
1. Option > Network > Transport > TLS
2. Make a call
3. Transport error occurred and call is terminated.

What is the expected output? What do you see instead?

Log :
05-15 14:52:46.513: D/org.doubango.ngn.media.NgnProxyPluginMgr(27323):
OnPluginCreated(1,twrap_proxy_plugin_audio_consumer)
05-15 14:52:46.513: D/org.doubango.ngn.media.NgnProxyPluginMgr(27323):
OnPluginCreated(2,twrap_proxy_plugin_audio_producer)
05-15 14:52:46.533: E/tinyWRAP(27323): ***ERROR: function:
"_sdp_pcfgs_from_sdp()"
05-15 14:52:46.533: E/tinyWRAP(27323): file: "src/tdav_session_av.c"
05-15 14:52:46.533: E/tinyWRAP(27323): line: "2012"
05-15 14:52:46.533: E/tinyWRAP(27323): MSG: Failed to find 'acap' with tag=1
05-15 14:52:46.533: E/tinyWRAP(27323): ***ERROR: function:
"_sdp_pcfgs_from_sdp()"
05-15 14:52:46.533: E/tinyWRAP(27323): file: "src/tdav_session_av.c"
05-15 14:52:46.533: E/tinyWRAP(27323): line: "2012"
05-15 14:52:46.533: E/tinyWRAP(27323): MSG: Failed to find 'acap' with tag=2
05-15 14:52:46.533: E/tinyWRAP(27323): ***ERROR: function:
"_sdp_pcfgs_from_sdp()"
05-15 14:52:46.533: E/tinyWRAP(27323): file: "src/tdav_session_av.c"
05-15 14:52:46.533: E/tinyWRAP(27323): line: "2012"
05-15 14:52:46.533: E/tinyWRAP(27323): MSG: Failed to find 'acap' with tag=1
05-15 14:52:46.533: E/tinyWRAP(27323): ***ERROR: function:
"_sdp_pcfgs_from_sdp()"
05-15 14:52:46.533: E/tinyWRAP(27323): file: "src/tdav_session_av.c"
05-15 14:52:46.533: E/tinyWRAP(27323): line: "2012"
05-15 14:52:46.533: E/tinyWRAP(27323): MSG: Failed to find 'acap' with tag=2
05-15 14:52:46.533: D/org.doubango.ngn.services.impl.NgnSipService(27323):
OnDialogEvent (Dialog connecting,9)
05-15 14:52:46.563: D/org.doubango.ngn.media.NgnProxyAudioProducer(27323):
stopCallback
05-15 14:52:46.563: D/org.doubango.ngn.services.impl.NgnSipService(27323):
OnDialogEvent (Transport error.,1)

What version of the product are you using? On what operating system?
Latest version

Please provide any additional information below.

```

Original issue reported on code.google.com by `capp1...@gmail.com` on 15 May 2013 at 6:32

Reproduce the outgoing call from Option > Network > Transport > TLS and capture the reported transport and SDP errors. Start by inspecting src/tdav_session_av.c, especially _sdp_pcfgs_from_sdp() at line 2012, then trace how the Android call reaches that path. Done means a TLS call completes without the transport error or the logged SDP failures.

Written by the indexing model from the issue text.