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FXO port is connected to PSTN FXS port is connected to analog phone or FAX VoIPon www.voipon.co.uk sales@voipon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299...
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If you have other questions, please contact the local dealer or distributor where you purchased this product. You can also browse our online FAQ resource at the ZYCOO website at first to check if it’s helpful to solve your issue If you need more support information, please contact ZYCOO support team.