PJSIP Digest Authentication

Hello

I use asterisk 12.5.0 on a Debian jessie (testing) system.
I have some problems to authenticate with digest authentication, using the pjsip channel

I created a pjsip configuration consisting of 4 parts
first part - the transport context
the second part - the aor context
the third part - the endpoint context
fourth part - the auth context

If i want make a call, the cli message of the asterisk is

WARNING[13930]: res_pjsip_outbound_authenticator_digest.c:124 digest_create_request_with_auth: Unable to create request with auth.No auth credentials for any realms in challenge.

the message of the cli command

pjsip show endpoint 062117212222

 Endpoint:  <Endpoint/CID.....................................>  <State.....>  <Channels.>
    I/OAuth:  <AuthId/UserName...........................................................>
        Aor:  <Aor............................................>  <MaxContact>
      Contact:  <Aor/ContactUri...............................>  <Status....>  <RTT(ms)..>
  Transport:  <TransportId........>  <Type>  <cos>  <tos>  <BindAddress..................>
   Identify:  <MatchList.................................................................>
    Channel:  <ChannelId......................................>  <State.....>  <Time(sec)>
        Exten: <DialedExten...........>  CLCID: <ConnectedLineCID.......>
 =========================================================================================

 Endpoint:  062117212222/062117212222                            Not in use    0 of inf
    OutAuth:  06211721/06211721
     InAuth:  06211721/06211721
        Aor:  062117212222                                       0
      Contact:  062117212222/sip:xxx.xxx.xxx.xxx:5060              Unavail             0.000
  Transport:  transport-udp             udp      0      0  145.253.240.98:5060


 ParameterName                 : ParameterValue
 ======================================================
 100rel                        : yes
 accountcode                   : 
 aggregate_mwi                 : true
 allow                         : (alaw)
 allow_subscribe               : true
 allow_transfer                : true
 aors                          : 062117212222
 auth                          : 06211721
 call_group                    : 
 callerid                      : 062117212222
 callerid_privacy              : allowed_not_screened
 callerid_tag                  : 062117212222
 connected_line_method         : invite
 context                       : inbound
 cos_audio                     : 0
 cos_video                     : 0
 device_state_busy_at          : 0
 direct_media                  : true
 direct_media_glare_mitigation : none
 direct_media_method           : invite
 disable_direct_media_on_nat   : false
 dtls_ca_file                  : 
 dtls_ca_path                  : 
 dtls_cert_file                : 
 dtls_cipher                   : 
 dtls_private_key              : 
 dtls_rekey                    : 0
 dtls_setup                    : active
 dtls_verify                   : No
 dtmf_mode                     : rfc4733
 fax_detect                    : false
 force_avp                     : false
 force_rport                   : true
 from_domain                   : xxxxxxxxxxxxxxx
 from_user                     : 
 ice_support                   : false
 identify_by                   : username
 inband_progress               : false
 language                      : 
 mailboxes                     : 
 media_address                 : 
 media_encryption              : none
 media_use_received_transport  : false
 message_context               : 
 moh_suggest                   : default
 mwi_from_user                 : 
 named_call_group              : 
 named_pickup_group            : 
 one_touch_recording           : false
 outbound_auth                 : 06211721
 outbound_proxy                : sip:xxx.xxx.xxx.xxx:5060
 pickup_group                  : 
 record_off_feature            : automixmon
 record_on_feature             : automixmon
 rewrite_contact               : true
 rtp_engine                    : asterisk
 rtp_ipv6                      : false
 rtp_symmetric                 : false
 sdp_owner                     : -
 sdp_session                   : Asterisk
 send_diversion                : true
 send_pai                      : true
 send_rpid                     : false
 set_var                       : 
 srtp_tag_32                   : false
 sub_min_expiry                : 0
 t38_udptl                     : false
 t38_udptl_ec                  : none
 t38_udptl_ipv6                : false
 t38_udptl_maxdatagram         : 0
 t38_udptl_nat                 : false
 timers                        : yes
 timers_min_se                 : 90
 timers_sess_expires           : 1800
 tone_zone                     : 
 tos_audio                     : 0
 tos_video                     : 0
 transport                     : transport-udp
 trust_id_inbound              : false
 trust_id_outbound             : true
 use_avpf                      : false
 use_ptime                     : false

the message of the cli command

pjsip show auth 06211721

  I/OAuth:  <AuthId/UserName.............................................................>
 =========================================================================================

     Auth:  06211721/06211721

 ParameterName  : ParameterValue
 ====================================================
 auth_type      : userpass
 md5_cred       : 
 nonce_lifetime : 32
 password       : xxxxxxxxxxxxx
 realm          : 06211721:xxxxxxxxxxxxxx@xxxxxxxxxx.de
 username       : 06211721

I think it means, that the auth object with the id 06211721 exist
That’s why, I don’t understand the asterisk message
"Unable to create request with auth"

Has anyone an idea

Thanks
Burkhard