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To improve voice quality, ensure that the following best practices are in place: Take note of the "symptoms" exhibited in a poor quality phone call.Specific traits of the call can help narrow down the issue.This will commonly be levied by a DHCP server, where leases to Vo IP endpoints will include voice-specific DHCP options.The direct answer to the first part of this question is no: Cisco IP phones are not directly compatible with Microsoft Lync Server. They just need a tftp server to update its firmware and it doesnt even have to be located on the asterisk/phone system itself. But what is essential in upgrading these phones is a DHCP server with option 150 enabled – an option to auto-provision the tftp server ip address when the DHCP server hands out the regular ip address to the phone.

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These are two separate streams, as opposed to a single two-way stream..active, .myportal.index table tbody, #content .container.index .desk-topic ul li a, #content .container.index .desk-qna ul li a, #content .container.index .get-sat ul li a .rateblock p #rate_article_container a.rate_link #rate_article_container a.rate_link:hover #site-canvas #search #site-canvas #search input#q #search #support-search-submit, #search #support-search-submit:hover, #search input[type=submit]:hover, #search button:hover #search_input_container a#status-widget div#breadcrumbs div#sidebar div#content a#desk-article-list-link #content .container.article .container .header h1, .container .header h2, .container .header h3, .container .header h4, .container .header h5 #content .container.article This blog is one of five dealing with the encryption of various Cisco UC devices.In other words, you cannot have a Cisco IP phone natively register with a Lync Front End Server.However, in regard to the second part of this question, Cisco IP phones can coexist with Lync phones with proper planning and design. If an organization has Cisco Unified Communications Manager deployed as their IP-PBX for Cisco IP phones, it may be possible, depending on the software version, to create a SIP trunk (aka Direct SIP in Microsoft terminology) between CUCM and Lync Server.

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