protocol error

[2014-03-03 23:44:03.901] TRACE Punchblock::Connection::XMPP: RECEIVING (iq) <iq type="error" to="1@176.9.89.23/voz.io-11369" id="5039193b-c91c-48d0-a7e0-fbaac3195ef1" from="4d039cd8-a325-11e3-9789-af6f720258e8@176.9.89.23">
  <join xmlns="urn:xmpp:rayo:1" call-uri="xmpp:1ffc3cf6-4fcb-7b7c-c1a1-c435767121eb@176.9.89.23" direction="duplex" media="bridge" mixer-name=""/>
  <error type="cancel">
    <service-unavailable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/>
    <text xmlns="urn:ietf:params:xml:ns:xmpp-stanzas" lang="en">b-leg is not a rayo call</text>
  </error>
</iq>
[2014-03-03 23:44:03.904] ERROR Adhearsion::OutboundCall: 4d039cd8-a325-11e3-9789-af6f720258e8@176.9.89.23: <Punchblock::ProtocolError> #<Punchblock::ProtocolError: name=:service_unavailable text="b-leg is not a rayo call" call_id="4d039cd8-a325-11e3-9789-af6f720258e8" component_id=nil>
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.2/lib/celluloid/responses.rb:29:in `value'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.2/lib/celluloid/calls.rb:92:in `value'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.2/lib/celluloid/proxies/sync_proxy.rb:33:in `method_missing'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/adhearsion-2.5.0/lib/adhearsion/call.rb:26:in `method_missing'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/adhearsion-2.5.0/lib/adhearsion/call_controller/dial.rb:186:in `block (2 levels) in prep_calls'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/has-guarded-handlers-1.6.0/lib/has_guarded_handlers.rb:117:in `call'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/has-guarded-handlers-1.6.0/lib/has_guarded_handlers.rb:117:in `call_handler'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/has-guarded-handlers-1.6.0/lib/has_guarded_handlers.rb:96:in `block (3 levels) in trigger_handler'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/has-guarded-handlers-1.6.0/lib/has_guarded_handlers.rb:91:in `catch'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/has-guarded-handlers-1.6.0/lib/has_guarded_handlers.rb:91:in `block (2 levels) in trigger_handler'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/has-guarded-handlers-1.6.0/lib/has_guarded_handlers.rb:89:in `each'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/has-guarded-handlers-1.6.0/lib/has_guarded_handlers.rb:89:in `find'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/has-guarded-handlers-1.6.0/lib/has_guarded_handlers.rb:89:in `block in trigger_handler'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/has-guarded-handlers-1.6.0/lib/has_guarded_handlers.rb:88:in `catch'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/has-guarded-handlers-1.6.0/lib/has_guarded_handlers.rb:88:in `trigger_handler'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/adhearsion-2.5.0/lib/adhearsion/call.rb:184:in `block in deliver_message'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/adhearsion-2.5.0/lib/adhearsion/foundation/exception_handler.rb:5:in `catching_standard_errors'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/adhearsion-2.5.0/lib/adhearsion/call.rb:183:in `deliver_message'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.2/lib/celluloid/calls.rb:25:in `public_send'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.2/lib/celluloid/calls.rb:25:in `dispatch'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.2/lib/celluloid/calls.rb:122:in `dispatch'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.2/lib/celluloid/actor.rb:322:in `block in handle_message'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.2/lib/celluloid/actor.rb:416:in `block in task'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.2/lib/celluloid/tasks.rb:55:in `block in initialize'
        /usr/local/rvm/gems/ruby-2.0.0-p247/gems/celluloid-0.15.2/lib/celluloid/tasks/task_fiber.rb:13:in `block in create'