Cannot Register Fax Extension

Discussion in '3CX Phone System - General' started by Steven.Zhang, Oct 26, 2017.

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  1. Steven.Zhang

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    Hello All,

    The fax and ATA are in a remote office , 3CX v15 system is in data center . The phones are connecting to phone system by SIP through internet line..

    I cannot register the ATA as fax extension , the error says Reason: Block WAN requests is ON. But the yealink SIP phones can be registered from same network.

    Could anyone help on this?
     
  2. leejor

    leejor Well-Known Member

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    I didn't think that remote Fax Extensions were supported without using VPN.
     
    YiannisH_3CX likes this.
  3. YiannisH_3CX

    YiannisH_3CX Support Team
    Staff Member 3CX Support

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    Hello @Steven.Zhang

    As leejor mentioned Fax extensions are only supported as local extensions. To register a FAX extension at a remote site you will need to establish a VPN connection between the remote site and the PBX. Normal extensions do support remote registration.
     
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