Freeswitch or Asterisk beind enterprise firewall - Step by Step SIP Configuration

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cforce

unread,
Feb 18, 2011, 6:29:26 AM2/18/11
to BigBlueButton-dev
Hello,

i am asking what is the easiest way to aenbale user to join conference
via phone, when they don't have an microphone. I Got an SIP account
(testet an working with sip sipsoftphone from my pc) on our enterprise
Siemens Server and now trying to make freeswitch work with this.
I am this data which i need to set in the config files:

Registrar/Server:172.16.242.136
Port:5060
Procokoll: UDP
Domain/Realm: 22...@SIP.COM
SIP Register String: sip:22...@SIP.com
Authentification Name/User Name/:2233
Multicast DNS: yes
Multichanell: yes

I Read through documentation and Mailings list, and changed some
files

/usr/share/red5/webapps/sip/WEB-INF/bigbluebutton-sip.properties
# The address of your asterisk server
sip.server.host=172.16.242.136
sip.server.port=5060
sip.server.username=2233
sip.server.password=2233

# The start/stop RTP port the application is going to use
# for the media stream.
# NOTE: This will also be used as SIP users to REGISTER with
# Asterisk. Therefore, make sure you have this range of users
# in your bbb_sip.conf.
# See http://code.google.com/p/bigbluebutton/source/browse/#svn/trunk/bbb-voice-conference/config/asterisk
# create-sip-users.sh script to create the users.
startAudioPort=15000
stopAudioPort=16383

# An extension pattern, in case your asterisk extensions.conf
# uses a naming convetion for your meeting rooms
# e.g. conf-85115 instead of just 85115
callExtensionPattern={0}

# If you want mjsip stack (red5/log/*access*.log) to minimize the
amount of logs it
# generates, set this to a lower value (e.g. 3).
sipStackDebugLevel=3

/opt/freeswitch/conf/directory/default/bbbuser.xml
<include>

<gateway name="172.16.242.136">
<param name="proxy" value="172.16.242.136"/>
<param name="username" value="2233"/>
<param name="password" value="1234"/>
<param name="extension" value="bbb_conferences"/>
</gateway>
<!--
ipauth if you have an cidr= in the user attributes ie
cidr="1.2.3.4/32"
see <node type="allow" domain="$${domain}"/> in default
acl.conf.xml
-->
<user id="bbbuser">
<params>
<!-- omit password for authless registration -->
<param name="password" value="secret"/>
<!-- What this user is allowed to acces -->
<!--<param name="http-allowed-api"
value="jsapi,voicemail,status"/> -->
</params>
<variables>
<!--all variables here will be set on all inbound calls that
originate from this user -->
<variable name="user_context" value="default"/>
<variable name="effective_caller_id_name" value="BigBlueButton"/
>
<variable name="effective_caller_id_number" value="1000"/>
<!-- Don't write a CDR if this is false valid values are: true,
false, a_leg and b_leg -->
<variable name="process_cdr" value="true"/>
<!-- sip_secure_media will offer mandatory SRTP on invite
AES_CM_128_HMAC_SHA1_32, AES_CM_128_HMAC_SHA1_80 or true-->
<variable name="sip_secure_media" value="false"/>
</variables>

<vcard>
<!-- insert optional compliant vcard xml here-->
</vcard>
</user>
</include>

It can't get it work and also find this in my sip.log:

2011-02-18 11:00:16,374 [main] DEBUG ROOT - Starting up context sip
2011-02-18 11:00:16,758 [Launcher:/sip] DEBUG
o.b.voiceconf.red5.Application - VoiceConferenceApplication
appStart[sip]
2011-02-18 11:00:16,942 [Launcher:/sip] DEBUG
o.b.voiceconf.sip.SipPeer - SIPUser register
2011-02-18 11:00:16,943 [Launcher:/sip] DEBUG
o.b.voiceconf.sip.SipPeer - SIPUser register : "2233" <sip:
22...@172.16.242.136>
2011-02-18 11:00:16,943 [Launcher:/sip] DEBUG
o.b.voiceconf.sip.SipPeer - SIPUser register : sip:22...@172.16.242.136
2011-02-18 11:00:17,040 [pool-7-thread-1] INFO
o.b.voiceconf.sip.SipRegisterAgent - Registering contact <sip:
22...@172.16.242.136> (it expires in 3600 secs)
2011-02-18 11:00:49,056 [Thread-5] ERROR o.b.voiceconf.sip.SipPeer -
Failed to register with Sip Server.


What i see is that sip register string (<sip:22...@172.16.242.136>)
looks wrong, bevause my Domain/Realm is SIP.COM, and that shall create
sip register string 22...@SIP.COM.

I even don't know if freeswitch is the correct tool for my case, or if
i shall run asterisk. The BB Server i srunning behind an entrperprise
firewall for internal users and only cann access internet via http
protocol.

It would be really great if someone can helo me out with an easy step
by step, what files need to be changed and how.

Tx for your support! And really nice piece of software, btw.!

cforce

unread,
Feb 21, 2011, 11:37:21 AM2/21/11
to BigBlueButton-dev
Can someone please help me to setup/fix the freeswitch SIP
configuration. I can 't find any complete doc or howto get this
woring.

Tx a lot!

On 18 Feb., 12:29, cforce <fabismai...@googlemail.com> wrote:
> Hello,
>
> i am asking what is the easiest way to aenbale user to join conference
> via phone, when they don't have an microphone. I Got an SIP account
> (testet an working with sip sipsoftphone from my pc) on our enterprise
> Siemens Server and now trying to make freeswitch work with this.
> I am this data which i need to set in the config files:
>
> Registrar/Server:172.16.242.136
> Port:5060
> Procokoll: UDP
> Domain/Realm: 2...@SIP.COM
> SIP Register String: sip:2...@SIP.com
> Authentification Name/User Name/:2233
> Multicast DNS: yes
> Multichanell: yes
>
> I Read through documentation and Mailings list, and changed some
> files
>
> /usr/share/red5/webapps/sip/WEB-INF/bigbluebutton-sip.properties
> # The address of your asterisk server
> sip.server.host=172.16.242.136
> sip.server.port=5060
> sip.server.username=2233
> sip.server.password=2233
>
> # The start/stop RTP port the application is going to use
> # for the media stream.
> # NOTE: This will also be used as SIP users to REGISTER with
> # Asterisk. Therefore, make sure you have this range of users
> # in your bbb_sip.conf.
> # Seehttp://code.google.com/p/bigbluebutton/source/browse/#svn/trunk/bbb-v...
> o.b.voiceconf.sip.SipPeer - SIPUser register : sip:2...@172.16.242.136
> 2011-02-18 11:00:17,040 [pool-7-thread-1] INFO
> o.b.voiceconf.sip.SipRegisterAgent - Registering contact <sip:
> 2...@172.16.242.136> (it expires in 3600 secs)
> 2011-02-18 11:00:49,056 [Thread-5] ERROR o.b.voiceconf.sip.SipPeer -
> Failed to register with Sip Server.
>
> What i see is that sip register string (<sip:2...@172.16.242.136>)
> looks wrong, bevause my Domain/Realm is SIP.COM, and that shall create
> sip register string 2...@SIP.COM.

Richard Alam

unread,
Feb 21, 2011, 11:49:51 AM2/21/11
to bigblueb...@googlegroups.com
Hi,

Is the Siemen's server a PBX/conferencing system?

You don't want BBB to directly connect to your Siemens server. BBB
doesn't know how to talk to it.

The proper way is for you to have your Siemens Server talk SIP to FS.
So you'll have the following setup

Client <----> BBB <-----> FS <----> Siemens <-----> PSTN/Softphone

I don't know how to configure Siemens to talk to FS. This link may
provide some hint.
http://wiki.freeswitch.org/wiki/Connecting_Freeswitch_And_Asterisk

Richard

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>
>

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http://www.bigbluebutton.org
http://code.google.com/p/bigbluebutton

cforce

unread,
Feb 22, 2011, 3:57:33 AM2/22/11
to BigBlueButton-dev
Does it matter which Typ the telephone nodule is, i mean it is talking
standard sip, as i already commented i can phone on that server via
Phonerlite Software.

Where do i have to edit and insert SIP Server data to make freeswitch
take over calls signaled for the sip user account i got from my field
service?
The logs says "Failed to register with Sip server", but uses ip of
server (sip:22...@172.16.242.136 ) instead of realm (22...@SIP.COM) in
sip string, what looks wrong to me, because Phonerlite uses sip
string with domain and registering works.
I can't even find a parameter where to enter realm, and what the sip
resgitzer string is made off or how to tweak.

Registrar/Server:172.16.242.136
Port:5060
Procokoll: UDP
Domain/Realm: 22...@SIP.COM
SIP Register String: sip:22...@SIP.com
Authentification Name/User Name/:2233
Multicast DNS: yes
Multichanell: yes

Does someone help me out please, i have no idea how to solve this.

Tx a lot.



On 21 Feb., 17:49, Richard Alam <ritza...@gmail.com> wrote:
> Hi,
>
> Is the Siemen's server a PBX/conferencing system?
>
> You don't want BBB to directly connect to your Siemens server. BBB
> doesn't know how to talk to it.
>
> The proper way is for you to have your Siemens Server talk SIP to FS.
> So you'll have the following setup
>
> Client <----> BBB <-----> FS <----> Siemens <-----> PSTN/Softphone
>
> I don't know how to configure Siemens to talk to FS. This link may
> provide some hint.http://wiki.freeswitch.org/wiki/Connecting_Freeswitch_And_Asterisk

cforce

unread,
Feb 23, 2011, 5:16:24 AM2/23/11
to BigBlueButton-dev
For further analyzing..


my red5 sip.log ( we changed telephone extension line number from 2233
to 2297):

-------------------------------------
2011-02-23 10:22:03,055 [main] DEBUG ROOT - Starting up context sip
2011-02-23 10:22:03,462 [Launcher:/sip] DEBUG
o.b.voiceconf.red5.Application - VoiceConferenceApplication
appStart[sip]
2011-02-23 10:22:03,565 [Launcher:/sip] DEBUG
o.b.voiceconf.sip.SipPeer - SIPUser register
2011-02-23 10:22:03,566 [Launcher:/sip] DEBUG
o.b.voiceconf.sip.SipPeer - SIPUser register : "2297" <sip:
22...@172.16.242.136>
2011-02-23 10:22:03,566 [Launcher:/sip] DEBUG
o.b.voiceconf.sip.SipPeer - SIPUser register : sip:22...@172.16.242.136
2011-02-23 10:22:03,688 [pool-7-thread-1] INFO
o.b.voiceconf.sip.SipRegisterAgent - Registering contact <sip:
22...@172.16.242.136> (it expires in 3600 secs)
2011-02-23 10:22:35,703 [Thread-5] ERROR o.b.voiceconf.sip.SipPeer -
Failed to register with Sip Server.
-------------------------------------

and my red5 log for the sip server events:


-------------------------------------
SipProvider-5060: Date: 10:22:03.522 Wed 23 Feb 2011
SipProvider-5060: SipStack: mjsip stack 1.6
SipProvider-5060: new SipProvider(): 5060/udp/tcp
Exception: java.net.BindException: Address already in use
at java.net.PlainDatagramSocketImpl.bind0(Native Method)
at
java.net.AbstractPlainDatagramSocketImpl.bind(AbstractPlainDatagramSocketImpl.java:
77)
at java.net.DatagramSocket.bind(DatagramSocket.java:373)
at java.net.DatagramSocket.<init>(DatagramSocket.java:229)
at java.net.DatagramSocket.<init>(DatagramSocket.java:282)
at java.net.DatagramSocket.<init>(DatagramSocket.java:254)
at org.zoolu.net.UdpSocket.<init>(UdpSocket.java:48)
at org.zoolu.sip.provider.UdpTransport.<init>(UdpTransport.java:54)
at org.zoolu.sip.provider.SipProvider.startTrasport(SipProvider.java:
359)
at org.zoolu.sip.provider.SipProvider.<init>(SipProvider.java:259)
at
org.bigbluebutton.voiceconf.sip.SipPeer.initSipProvider(SipPeer.java:
64)
at org.bigbluebutton.voiceconf.sip.SipPeer.<init>(SipPeer.java:60)
at
org.bigbluebutton.voiceconf.sip.SipPeerManager.createSipPeer(SipPeerManager.java:
51)
at
org.bigbluebutton.voiceconf.red5.Application.appStart(Application.java:
56)
at
org.red5.server.adapter.MultiThreadedApplicationAdapter.start(MultiThreadedApplicationAdapter.java:
417)
at org.red5.server.Scope.start(Scope.java:1158)
at org.red5.server.Scope.init(Scope.java:893)
at org.red5.server.WebScope.register(WebScope.java:198)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:
1529)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:
1468)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:
1398)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:
512)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:
450)
at org.springframework.beans.factory.support.AbstractBeanFactory
$1.getObject(AbstractBeanFactory.java:290)
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:
222)
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:
287)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:
189)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:
557)
at
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:
842)
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:
416)
at org.red5.server.tomcat.TomcatLoader$1.run(TomcatLoader.java:594)

Exception: java.net.BindException: Address already in use
at java.net.PlainSocketImpl.socketBind(Native Method)
at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:
336)
at java.net.ServerSocket.bind(ServerSocket.java:336)
at java.net.ServerSocket.<init>(ServerSocket.java:202)
at java.net.ServerSocket.<init>(ServerSocket.java:114)
at org.zoolu.net.TcpServer.init(TcpServer.java:90)
at org.zoolu.net.TcpServer.<init>(TcpServer.java:66)
at org.zoolu.sip.provider.SipProvider.startTrasport(SipProvider.java:
370)
at org.zoolu.sip.provider.SipProvider.<init>(SipProvider.java:259)
at
org.bigbluebutton.voiceconf.sip.SipPeer.initSipProvider(SipPeer.java:
64)
at org.bigbluebutton.voiceconf.sip.SipPeer.<init>(SipPeer.java:60)
at
org.bigbluebutton.voiceconf.sip.SipPeerManager.createSipPeer(SipPeerManager.java:
51)
at
org.bigbluebutton.voiceconf.red5.Application.appStart(Application.java:
56)
at
org.red5.server.adapter.MultiThreadedApplicationAdapter.start(MultiThreadedApplicationAdapter.java:
417)
at org.red5.server.Scope.start(Scope.java:1158)
at org.red5.server.Scope.init(Scope.java:893)
at org.red5.server.WebScope.register(WebScope.java:198)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:
1529)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:
1468)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:
1398)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:
512)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:
450)
at org.springframework.beans.factory.support.AbstractBeanFactory
$1.getObject(AbstractBeanFactory.java:290)
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:
222)
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:
287)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:
189)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:
557)
at
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:
842)
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:
416)
at org.red5.server.tomcat.TomcatLoader$1.run(TomcatLoader.java:594)

SipProvider-5060: adding SipProviderListener: ANY
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at
org.bigbluebutton.voiceconf.sip.KeepAliveSip.sendToken(KeepAliveSip.java:
75)
at org.bigbluebutton.voiceconf.sip.KeepAliveUdp.run(KeepAliveUdp.java:
149)
at org.bigbluebutton.voiceconf.sip.KeepAliveSip.run(KeepAliveSip.java:
82)

TransactionClient#0: id: 024675...@172.16.242.136-1-
REGISTER-172.16.242.136:5060-z9hG4bK923310
TransactionClient#0: created
TransactionClient#0: changed transaction state: T_Trying
SipProvider-5060: adding SipProviderListener:
024675...@172.16.242.136-1-REGISTER-172.16.242.136:5060-
z9hG4bK923310
SipProvider-5060: using transport udp
SipProvider-5060: Resolving host address '172.16.242.136'
SipProvider-5060: Sending message to udp:172.16.242.136:5060
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
918)
at
org.zoolu.sip.transaction.TransactionClient.request(TransactionClient.java:
85)
at
org.bigbluebutton.voiceconf.sip.SipRegisterAgent.register(SipRegisterAgent.java:
213)
at
org.bigbluebutton.voiceconf.sip.SipRegisterAgent.register(SipRegisterAgent.java:
154)
at
org.bigbluebutton.voiceconf.sip.SipRegisterAgent.registerWithServer(SipRegisterAgent.java:
298)
at org.bigbluebutton.voiceconf.sip.SipRegisterAgent.access
$000(SipRegisterAgent.java:45)
at org.bigbluebutton.voiceconf.sip.SipRegisterAgent
$1.run(SipRegisterAgent.java:250)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:
1110)
at java.util.concurrent.ThreadPoolExecutor
$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)

TransactionClient#0: Retransmission timeout expired
SipProvider-5060: using transport udp
SipProvider-5060: Resolving host address '172.16.242.136'
SipProvider-5060: Sending message to udp:172.16.242.136:5060
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
918)
at
org.zoolu.sip.transaction.TransactionClient.onTimeout(TransactionClient.java:
130)
at org.zoolu.tools.Timer.onInnerTimeout(Timer.java:126)
at org.zoolu.tools.InnerTimer.run(InnerTimer.java:43)

TransactionClient#0: Retransmission timeout expired
SipProvider-5060: using transport udp
SipProvider-5060: Resolving host address '172.16.242.136'
SipProvider-5060: Sending message to udp:172.16.242.136:5060
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
918)
at
org.zoolu.sip.transaction.TransactionClient.onTimeout(TransactionClient.java:
130)
at org.zoolu.tools.Timer.onInnerTimeout(Timer.java:126)
at org.zoolu.tools.InnerTimer.run(InnerTimer.java:43)

TransactionClient#0: Retransmission timeout expired
SipProvider-5060: using transport udp
SipProvider-5060: Resolving host address '172.16.242.136'
SipProvider-5060: Sending message to udp:172.16.242.136:5060
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
918)
at
org.zoolu.sip.transaction.TransactionClient.onTimeout(TransactionClient.java:
130)
at org.zoolu.tools.Timer.onInnerTimeout(Timer.java:126)
at org.zoolu.tools.InnerTimer.run(InnerTimer.java:43)

TransactionClient#0: Retransmission timeout expired
SipProvider-5060: using transport udp
SipProvider-5060: Resolving host address '172.16.242.136'
SipProvider-5060: Sending message to udp:172.16.242.136:5060
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
918)
at
org.zoolu.sip.transaction.TransactionClient.onTimeout(TransactionClient.java:
130)
at org.zoolu.tools.Timer.onInnerTimeout(Timer.java:126)
at org.zoolu.tools.InnerTimer.run(InnerTimer.java:43)

Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at
org.bigbluebutton.voiceconf.sip.KeepAliveSip.sendToken(KeepAliveSip.java:
75)
at org.bigbluebutton.voiceconf.sip.KeepAliveUdp.run(KeepAliveUdp.java:
149)
at org.bigbluebutton.voiceconf.sip.KeepAliveSip.run(KeepAliveSip.java:
82)

TransactionClient#0: Retransmission timeout expired
SipProvider-5060: using transport udp
SipProvider-5060: Resolving host address '172.16.242.136'
SipProvider-5060: Sending message to udp:172.16.242.136:5060
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
918)
at
org.zoolu.sip.transaction.TransactionClient.onTimeout(TransactionClient.java:
130)
at org.zoolu.tools.Timer.onInnerTimeout(Timer.java:126)
at org.zoolu.tools.InnerTimer.run(InnerTimer.java:43)

TransactionClient#0: Retransmission timeout expired
SipProvider-5060: using transport udp
SipProvider-5060: Resolving host address '172.16.242.136'
SipProvider-5060: Sending message to udp:172.16.242.136:5060
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
918)
at
org.zoolu.sip.transaction.TransactionClient.onTimeout(TransactionClient.java:
130)
at org.zoolu.tools.Timer.onInnerTimeout(Timer.java:126)
at org.zoolu.tools.InnerTimer.run(InnerTimer.java:43)

Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at
org.bigbluebutton.voiceconf.sip.KeepAliveSip.sendToken(KeepAliveSip.java:
75)
at org.bigbluebutton.voiceconf.sip.KeepAliveUdp.run(KeepAliveUdp.java:
149)
at org.bigbluebutton.voiceconf.sip.KeepAliveSip.run(KeepAliveSip.java:
82)

TransactionClient#0: Retransmission timeout expired
SipProvider-5060: using transport udp
SipProvider-5060: Resolving host address '172.16.242.136'
SipProvider-5060: Sending message to udp:172.16.242.136:5060
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
918)
at
org.zoolu.sip.transaction.TransactionClient.onTimeout(TransactionClient.java:
130)
at org.zoolu.tools.Timer.onInnerTimeout(Timer.java:126)
at org.zoolu.tools.InnerTimer.run(InnerTimer.java:43)

TransactionClient#0: Retransmission timeout expired
SipProvider-5060: using transport udp
SipProvider-5060: Resolving host address '172.16.242.136'
SipProvider-5060: Sending message to udp:172.16.242.136:5060
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
918)
at
org.zoolu.sip.transaction.TransactionClient.onTimeout(TransactionClient.java:
130)
at org.zoolu.tools.Timer.onInnerTimeout(Timer.java:126)
at org.zoolu.tools.InnerTimer.run(InnerTimer.java:43)

Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at
org.bigbluebutton.voiceconf.sip.KeepAliveSip.sendToken(KeepAliveSip.java:
75)
at org.bigbluebutton.voiceconf.sip.KeepAliveUdp.run(KeepAliveUdp.java:
149)
at org.bigbluebutton.voiceconf.sip.KeepAliveSip.run(KeepAliveSip.java:
82)

TransactionClient#0: Retransmission timeout expired
SipProvider-5060: using transport udp
SipProvider-5060: Resolving host address '172.16.242.136'
SipProvider-5060: Sending message to udp:172.16.242.136:5060
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
918)
at
org.zoolu.sip.transaction.TransactionClient.onTimeout(TransactionClient.java:
130)
at org.zoolu.tools.Timer.onInnerTimeout(Timer.java:126)
at org.zoolu.tools.InnerTimer.run(InnerTimer.java:43)

TransactionClient#0: Retransmission timeout expired
SipProvider-5060: using transport udp
SipProvider-5060: Resolving host address '172.16.242.136'
SipProvider-5060: Sending message to udp:172.16.242.136:5060
Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
918)
at
org.zoolu.sip.transaction.TransactionClient.onTimeout(TransactionClient.java:
130)
at org.zoolu.tools.Timer.onInnerTimeout(Timer.java:126)
at org.zoolu.tools.InnerTimer.run(InnerTimer.java:43)

Exception: java.lang.NullPointerException
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
770)
at org.zoolu.sip.provider.SipProvider.sendMessage(SipProvider.java:
751)
at
org.bigbluebutton.voiceconf.sip.KeepAliveSip.sendToken(KeepAliveSip.java:
75)
at org.bigbluebutton.voiceconf.sip.KeepAliveUdp.run(KeepAliveUdp.java:
149)
at org.bigbluebutton.voiceconf.sip.KeepAliveSip.run(KeepAliveSip.java:
82)

TransactionClient#0: Transaction timeout expired
SipProvider-5060: removing SipProviderListener:
024675...@172.16.242.136-1-REGISTER-172.16.242.136:5060-
z9hG4bK923310
TransactionClient#0: changed transaction state: T_Terminated
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