Unable to complete outgoing SIP URI calls

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Maygill:
Quote from: azrobert on February 09, 2021, 01:37:15 pm

Are you running the same firmware on both OBi202s?


Yes. Oddly, the one that does work isn't connected to Obitalk.

I found the cause. It's Trend Micro's Two-Way Intrusion Prevention System in Asus routers, and it reports a lot of threats for the ATA that wasn't working:


Type
Device Infected

Source
OBi202 LAN IP

Threat
SIP Digium Asterisk app_minivm Caller-ID Command Execution -1.1 (CVE-2017-14100)
https://helpcenter.trendmicro.com/en-us/search/?id=SIP_Obihai%20Technology,%20Inc.&q=SIP+Digium+Asterisk

Disabling Trend Micro's Two Way IPS in the Asus router makes the outbound SIP URI calls work.

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