Hi,

how do I fix this problem:

Failed Registration with status DNS Error [503]?

I already search the net but couldn't find a proper answer. The only thing that I found was something about DNS SRV Resource Record but this was fixed in freeswitch a long time ago.

My Setup:

FreeSWITCH Version 1.6.19

Debian 7 wheezy

Freeswitch(Debian) -> Router(OpenBSD) -> Internet

Failed Registration with status DNS Error [503]
2018-06-29 19:27:21.732868 [NOTICE] sofia_reg.c:448 Registering telekom_voip
nua.c:622 nua_register() nua: nua_register: entering
nua_stack.c:529 nua_signal() nua(0x8c8c0c8): sent signal r_register
nua_stack.c:569 nua_stack_signal() nua(0x8c8c0c8): recv signal r_register
nua_params.c:480 nua_stack_set_params() nua: nua_stack_set_params: entering
soa.c:403 soa_set_params() soa_set_params(static::0xb5c1a298, ...) called
nua_dialog.c:338 nua_dialog_usage_add() nua(0x8c8c0c8): adding register usage
nta.c:4417 nta_leg_tcreate() nta_leg_tcreate(0xb6279478)
nta.c:2665 nta_tpn_by_url() nta: selecting scheme sip
sres_cache.c:272 sres_cache_get() sres_cache_get(0x8ccd7b0, NAPTR, "sip-trunk.telekom.de.") called
sres_cache.c:318 sres_cache_get() sres_cache_get(0x8ccd7b0, NAPTR, "sip-trunk.telekom.de.") returned 1 entries
nta.c:10398 outgoing_query_naptr() nta: for "sip-trunk.telekom.de" query "sip-trunk.telekom.de" NAPTR (cached)
sres_cache.c:272 sres_cache_get() sres_cache_get(0x8ccd7b0, SRV, "_sip._udp.sip-trunk.telekom.de.") called
sres_cache.c:318 sres_cache_get() sres_cache_get(0x8ccd7b0, SRV, "_sip._udp.sip-trunk.telekom.de.") returned 1 entries
nta.c:10598 outgoing_query_srv() nta: for "sip-trunk.telekom.de" query "_sip._udp.sip-trunk.telekom.de" SRV (cached)
sres_cache.c:272 sres_cache_get() sres_cache_get(0x8ccd7b0, A, "sip-trunk.telekom.de.") called
sres_cache.c:318 sres_cache_get() sres_cache_get(0x8ccd7b0, A, "sip-trunk.telekom.de.") returned 1 entries
nta.c:10803 outgoing_query_a() nta: for "sip-trunk.telekom.de" query "sip-trunk.telekom.de" A (cached)
nta.c:1350 set_timeout() nta: timer set to 32000 ms
nta.c:1348 set_timeout() nta: timer shortened to 5000 ms
nua_stack.c:271 nua_stack_event() nua(0x8c8c0c8): event r_register 503 DNS Error
nua_dialog.c:397 nua_dialog_usage_remove_at() nua(0x8c8c0c8): removing register usage
nta.c:4470 nta_leg_destroy() nta_leg_destroy(0xb6279478)
nua_stack.c:359 nua_application_event() nua: nua_application_event: entering
nua.c:366 nua_handle_magic() nua: nua_handle_magic: entering
2018-06-29 19:27:21.732868 [ERR] sofia_reg.c:2447 telekom_voip Failed Registration with status DNS Error [503]. failure #34
nua.c:366 nua_handle_magic() nua: nua_handle_magic: entering
2018-06-29 19:27:22.772957 [WARNING] sofia_reg.c:505 telekom_voip Failed Registration [503], setting retry to 30 seconds.
nta.c:9101 outgoing_timer_dk() nta: timer K fired, terminate REGISTER (124810556)
nta.c:8799 outgoing_reclaim_queued() outgoing_reclaim_all((nil), (nil), 0xb60911e0)
nta.c:8929 _nta_outgoing_timer() nta_outgoing_timer: 0/0 resent, 0/0 tout, 1/1 term, 1/1 free
nta.c:1289 agent_timer() nta: timer not set

sofia_dig --tcp reg.sip-trunk.telekom.de
Preference        Weight     Transport          Port       Address
================================================================================
         1         1.000           tcp          5060    217.0.26.165
         2         1.000           tcp          5060    217.0.26.163
         3         1.000           tcp          5060    217.0.26.133

Gateway settings

<include>
 <gateway name="telekom_voip">
  <param name="username" value=„XXXXXXXX“/>
  <param name="password" value=„XXXXXXXX“/>

  <param name="proxy" value="reg.sip-trunk.telekom.de"/>
  <param name="register-proxy" value="sip-trunk.telekom.de"/>
  <param name="register" value="true"/>
  <param name="register-transport" value="tcp"/>
  <param name="expire-seconds" value="3600"/>

 </gateway>

</include>

Regards,

Paul