Can't make simultanusly 2 calls

Discussion in '3CX Phone System - General' started by kousinovaliskostas, Aug 23, 2016.

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  1. kousinovaliskostas

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    Hello
    Today I noticed that i can't make 2 simultanusly calls which is worked some days ago.
    The log says
    Leg L:45.3[Line:10000>>6936158137] is terminated: Cause: 503 Service Unavailable/INVITE from 192.168.1.160:5060

    192.168.1.160 is the 3cx PC
     
  2. craigreilly

    craigreilly Well-Known Member

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    Gateway with PSTN, Gateway with ISDN, VoIP/SIP Service?
     
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  3. kousinovaliskostas

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    We have ISDN line and we use the grandstream gxw4104
     
  4. kousinovaliskostas

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    grandstream gxw4104
     
  5. leejor

    leejor Well-Known Member

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    Sounds like a gateway, or provider issue. Are you able to place a call, and still receive one over ISDN?
     
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