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  • Users: FARAT
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  1. FARAT

    SIP Trunk error 503

    Hi adibv & theory, Thanks for response. The sip message that we have received with error 503 from ITSP Reason:Q.850 Cause =41 (Temporary Failure) What would be the probable cause & solution for it?
  2. FARAT

    SIP Trunk error 503

    We have faced a problem while interfacing OpenScape Business X5 with SIP Trunk of Service provider. After programming ITSP Trunk in OSB & checking through trace of cap0 file in wireshark, we are getting message 503 error message during outgoing call. Can anyone help us with advice to solve this...

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