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Refer to the figure on the previous page as you read through this high-level description of setting up a dial plan. In terms of basic functionality, the AE Services implementation for Microsoft Lync Server 2010 and Microsoft Lync Server 2013 acts as a SIP to CSTA III gateway. In simplest terms, the interactions between Lync, AE Services, and Avaya Aura® Communication ManagerCommunication Manager are as follows:
Lync passes phone numbers in TelURI format to AE Services.
Based on Dial Plan settings, AE Services converts them from TelURI format (for example, +13035551234) to an extension (such as 5551234) and passes them to Avaya Aura® Communication Manager.
Avaya Aura® Communication Manager, in turn, passes the extension back to AE Services. Based on the Dial Plan settings in the AE Services Management Console, AE Services converts extensions to TelURI format and passes them back to Lync.
Specific Avaya SIP endpoints can be controlled if your configuration relies on AE Services 4.1 or later and Avaya Aura® Communication Manager 5.0. See the AE Services release notes for the list of supported SIP endpoints and firmware.