connecting Skype for business 2015 on premise between Domains

Doug Segalowitz 1 Reputation point

I have two domains that are trusted. Both Domains have their own on premise install's of SFB.

I would like for users to be able to chat with each other between both domains. I have already tried to make this happen but no luck yet. Do I need an Edge server? I set the Global rules on both SFB servers to allow external access. No luck

please help .

Skype for Business
Skype for Business
A Microsoft communications service that provides communications capabilities across presence, instant messaging, audio/video calling, and an online meeting experience that includes audio, video, and web conferencing.
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  1. Sharon Zhao-MSFT 25,131 Reputation points Microsoft Vendor

    @Doug Segalowitz ,

    Sure, you need to deploy Edge server in your two environments. Edge server is required if you need external users who aren’t logged into your organization ‘s internal network to be able to interact with internal users. These external users could be authenticated and anonymous remote user, federated partners, or other mobile clients.

    About how to deploy Edge server in Skype for Business Server, please refer to this article.

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