Unable to integrate on-premises Lync 2010 to Office 365 hosted UM

Hello everyone
I am looking for a solution to make our voicemail working again after the recent move to Office 365. We have a fully functional Lync environment with edge server and it is connected
to a couple of analogue PSTN lines using an audiocodes MP-118 Gateway. We don't have a PABX system. I was able to integrate this setup to the on-premises exchange UM. We recently migrated our exchange mailboxes to O365 and I followed the procedure to integrate
on-premises lync to Hosted UM but no luck. I think the 'Outlook Voice Access" number is causing the issue. Since we don't have a PABX I am not sure what number I should use for Outlook Voice Access. I was using a fake number in the on-premises setup.
Can anyone please help me to resolve this issue or suggest a workaround?
Thanks
MS

Hi,
Naturally if you use a fake number then you won't be able to call your Subscriber Access number from the PSTN. A common mistake when configuring hosted UM with on premises Lync is not matching the 'routing number' in your hosted UM dial plan to the number
of your Subscriber Access contact object on premises - these two numbers should be the same. Typically the number used for this is a spare number on your DDI range. You can use a fake number if you desire, it wont be accessible externally, but is required
to map the hosted UM service to a contact object down in Lync.
You mention that you had previously used on premises UM without issue, you should ensure that the legacy contacts objects and configuration for this has been removed to ensure it doesn't impact your new hosted configuration.
If you can point me to the guide that you followed, I might be able to identify anything that's missing from the process.
Additionally, what is the error that Lync reports, and have you been able to look at a client side trace with snooper?
Kind regards
Ben
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Hi,
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Hi,
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Ethan Hua CHN
TechNet Community Support

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Blog www.lynced.com.au | Twitter
@georgathomas
Lync Edge Port Check (Beta)
This forum post is my own opinion and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

Unable to integrate on-premises Lync 2010 to Office 365 hosted UM

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