Remote VoIP Phone Unifi Network
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Also go into the Asterisk SIP Settings and ensure that NAT is enabled for
chan_sipif you are using it.

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@JaredBusch Yep, already set to that.
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And if the extensions are
chan_sip, make sure the NAT is enabled there also.
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@NashBrydges - Silly question but is the handset plugged into the correct jack on the back of the phone? I can't remember if the handset and headset ports are similar on the T57W.
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@NashBrydges - just a couple other thoughts:
Do either locations have a double nat?
Who are the ISPs? Maybe something with the ISP provided hardware?
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@syko24 said in Remote VoIP Phone Unifi Network:
@NashBrydges - Silly question but is the handset plugged into the correct jack on the back of the phone? I can't remember if the handset and headset ports are similar on the T57W.
Yeah, the connections are good.
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@syko24 said in Remote VoIP Phone Unifi Network:
@NashBrydges - just a couple other thoughts:
Do either locations have a double nat?
Who are the ISPs? Maybe something with the ISP provided hardware?
Both locations use the same ISP and no double NAT either.
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willing to post pictures of your firewall configs?
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What are your routers? Ubiquiti?
Can you disable SIP ALG on them? (sometimes called SIP transformation on other routers)
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@JasGot said in Remote VoIP Phone Unifi Network:
What are your routers? Ubiquiti?
Can you disable SIP ALG on them? (sometimes called SIP transformation on other routers)
He mentioned CONNTRACK - I know that's on USGs.. not sure if it's called that on ER's?
OK the ER does have CONNTRACK.
https://community.ui.com/questions/EdgeRouter-Infinity-conntrack-tuning/efc51d58-8464-41f5-b10e-f7d0fb10968b - 
@Dashrender said in Remote VoIP Phone Unifi Network:
@JasGot said in Remote VoIP Phone Unifi Network:
What are your routers? Ubiquiti?
Can you disable SIP ALG on them? (sometimes called SIP transformation on other routers)
He mentioned CONNTRACK - I know that's on USGs.. not sure if it's called that on ER's?
OK the ER does have CONNTRACK.
https://community.ui.com/questions/EdgeRouter-Infinity-conntrack-tuning/efc51d58-8464-41f5-b10e-f7d0fb10968bAll routers have a conntrack table..