Unable to send faxes from Toshiba e-Studio by using Cisco SPA 122 ATA

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Our environment requires us to send faxes traditional way. Recently we switched to RingCentral telephone service and were planning to switch our fax machines also. To test it first, we port it only one machine. 90% of our faxes failure to send. Only few numbers that we can send them through. We are using Toshiba e-Studio 5055c with ECM disabled. Toshiba's e-Studio MFPs don't have baud settings for reducing transmit speed. Instead, they adjust speed automatically based on recipient. Interesting that faxes sent perfectly fine when using desktop app.

Also, when faxes are sent of failure, there are no records under the log of that extension where fax machine connected to the corresponded ATA.

Any suggestions? 
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Ruslan Allahverdi

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Posted 3 weeks ago

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Jessica - Community Support, Official Rep

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Hi Ruslan, 

Have you followed the steps in this KB article?
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Ruslan Allahverdi

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Yes. Also spent few hours with support
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Jessica - Community Support, Official Rep

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I see your case with Support. Since Toshiba doesn't have baud settings, it was recommended you work directly with the manufacturer. 

It's possible someone else has experience on the Community, but RingCentral is advising to partner with Toshiba. 
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Ruslan Allahverdi

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Already did. They don't have that settings.
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Michel, Champion

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Try setting the "Compatibility " option to "Internet Fax (Simple mode) (ITU-T.37)"

I believe the default setting is  "Super G3, G3 (ITU-T.30)"

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Ruslan Allahverdi

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Michel, where is this setting located? Thanks.
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Michel, Champion

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It should be with the Fax settings along with "TX Resolution"
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Michel, Champion

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It should be with the Fax settings along with "TX Resolution"
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Ruslan Allahverdi

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Michel, on Toshiba or Cisco SPA 122 setting page?
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Michel, Champion

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In the Toshiba settings