Stefan Sayer writes:

 > > ua -> invite  -> sems -> anonymized invite -> ua
 > >    <- ringing <-      <-     ringing       <-
 > >    <-   ok    <-      <-        ok         <-
 > > 
 > > can the above be done with sems ivr or dsm or do i need to use a b2bua
 > > such as sippy for this?
 > for c++ example apps see call_timer or auth_b2b. you could use auth_b2b 
 > right away, set anonymous in auth_b2b.conf:
 > # Account to use on the outgoing call leg. If this is not set,
 > # the account is taken from P-App-Param header (see Readme.auth_b2b)
 > #
 > # user=someuser
 > # domain=somedomain.net
 > # pwd=sompwd

stefan,

i tried this, but sdp that sems sent to callee was that of caller, i.e.,
callee sees the ip address where the call comes from:

    Message Body
        Session Description Protocol
            Session Description Protocol Version (v): 0
            Owner/Creator, Session Id (o): twinkle 104129365 417910561 IN IP4 19
2.98.101.10
            Session Name (s): -
            Connection Information (c): IN IP4 192.98.101.10
            Time Description, active time (t): 0 0
            Media Description, name and address (m): audio 8000 RTP/AVP 98 97 96
 8 0 3 101

a true anonymizer needs to relay also media.

-- juha
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