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[SOLVED] Faxing with HyperV VM as Fax Server?

 
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bbrown



Joined: 09 Feb 2016
Posts: 6

PostPosted: Tue Feb 09, 2016 2:52 pm    Post subject: [SOLVED] Faxing with HyperV VM as Fax Server? Reply with quote

Trying to get HyperV VM faxing nailed down and so far has been very unreliable.

Does anyone know if this product supports it or what setting I need to set to make it work reliably with a HyperV VM as a fax server?

Server 2012 R2 <-> Server 2012 R2 VM using a USR5637 Modem
- So far its been very unreliable with a 50/50 success rate.
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Peter
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Joined: 01 Aug 2007
Posts: 653

PostPosted: Wed Feb 10, 2016 9:36 am    Post subject: Reply with quote

Hi bbrown,
What do you mean under "unreliable", how does the problem look like exactly?
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bbrown



Joined: 09 Feb 2016
Posts: 6

PostPosted: Wed Feb 10, 2016 11:48 am    Post subject: Reply with quote

Fax transmissions fails with the error:
"The incoming call cannot be answered as a fax call".
- I am guessing the handshake did not go well with the modem and sending fax machine.

Any suggestions?
I have tried lowering the the baud rate down to 38400 and 19200 and still no joy. Is there any settings I can change to make it more reliable?

Is the USB Redirector compatible with the USR5637 USB modem?
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Peter
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Joined: 01 Aug 2007
Posts: 653

PostPosted: Mon Mar 21, 2016 11:08 am    Post subject: Reply with quote

Hi bbrown,

Is the problem still persists? If so, could you please check the latency between the virtual machine and host? (use ping command on the vm). We've seen cases where high latency (caused by NIC drivers) could lead to a problem with faxing.
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bbrown



Joined: 09 Feb 2016
Posts: 6

PostPosted: Mon Mar 21, 2016 11:11 am    Post subject: Reply with quote

I will check that.. and we are also going to add a PCIe USB card and see if we can get it to work... install is scheduled for tomorrow so I will report back on my findings.

Thanks for the reply and suggestion. Will give it a go.
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bbrown



Joined: 09 Feb 2016
Posts: 6

PostPosted: Tue Mar 22, 2016 4:09 pm    Post subject: Reply with quote

Ping replies were all less than <1ms but during a modem query it sometimes jumped to as much as 195ms

*** I am upgrading the NIC Drivers tonight so I will report back if that did or didn't fix the latency issues.

Thanks!
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bbrown



Joined: 09 Feb 2016
Posts: 6

PostPosted: Thu Mar 24, 2016 5:30 pm    Post subject: Reply with quote

bbrown wrote:
Ping replies were all less than <1ms but during a modem query it sometimes jumped to as much as 195ms

*** I am upgrading the NIC Drivers tonight so I will report back if that did or didn't fix the latency issues.

Thanks!


I update the NIC drivers and there is no more lag doing a modem query.
We are going to do some fax testing next week tuesday and see if that fixed the problem.

Thanks for the help!
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Peter
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Joined: 01 Aug 2007
Posts: 653

PostPosted: Tue Apr 12, 2016 1:39 pm    Post subject: Reply with quote

Hi bbrown! Can you update us, did it solve the problem?
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bbrown



Joined: 09 Feb 2016
Posts: 6

PostPosted: Tue Apr 12, 2016 1:43 pm    Post subject: Reply with quote

Sorry!

Yes the resolution was updating the HP / HyperV Host network drivers; it was using the MS WDM/default drivers originally. (There is a specific HyperV procedure for this update so beware if you need to do this!) - Procedure Link: http://www.dell.com/support/article/us/en/04/SLN266107

After we updated the drivers to the latest HP version the faxing worked like a dream come true.

Thank You!
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Peter
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Joined: 01 Aug 2007
Posts: 653

PostPosted: Tue Apr 12, 2016 3:09 pm    Post subject: Reply with quote

Cool! Then I'm marking it as solved. Thanks for update and the detailed information, I'm sure it will be helpful for other users.
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