{"id":3042,"date":"2011-07-18T14:31:19","date_gmt":"2011-07-18T20:31:19","guid":{"rendered":"http:\/\/gregsowell.com\/?p=3042"},"modified":"2011-07-18T14:31:19","modified_gmt":"2011-07-18T20:31:19","slug":"second-line-on-cisco-ata-186188","status":"publish","type":"post","link":"https:\/\/gregsowell.com\/?p=3042","title":{"rendered":"Second Line On Cisco ATA 186\/188"},"content":{"rendered":"<p>Cisco ATAs have a second line, but you may have also noticed that there is no phone button template that includes two lines for an ATA 186&#8230;interesting.  It turns out that the second line on the ATA has a completely seperate MAC address associated with it.  To use the second line you add it as if it is its own ATA.  The MAC, however, isn&#8217;t printed on the ATA&#8230;there is a secret trick to calculate the MAC for the second line.<\/p>\n<p>An ATA MAC will appear as:<\/p>\n<pre class=\"gs-code\"><code class=\"language-plaintext\">001120C38D7C<\/code><\/pre>\n<p>To figure out what the second line&#8217;s MAC is, subtract the first two digits on the left as so:<\/p>\n<pre class=\"gs-code\"><code class=\"language-plaintext\">1120C38D7C<\/code><\/pre>\n<p>Then add 01 to the end:<\/p>\n<pre class=\"gs-code\"><code class=\"language-plaintext\">1120C38D7C01<\/code><\/pre>\n<p>That&#8217;s it.  Just add a new ATA to the system and use the newly calculated MAC.<\/p>\n<p>There are some caveats.  If you want to run two simultanious calls, you can only run certain codecs at the same time:<\/p>\n<li>Two simultaneous G.723.1 codecs<\/li>\n<li>Two simultaneous G.711 codecs<\/li>\n<li>One G.723.1 and one G.711 codec<\/li>\n<li>One G.729A and one G.711 codec (G.729A is available on first-come, first-served basis)<\/li>\n","protected":false},"excerpt":{"rendered":"<p>Cisco ATAs have a second line, but you may have also noticed that there is no phone button template that includes two lines for\u2026<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,16,20,19],"tags":[],"class_list":["post-3042","post","type-post","status-publish","format-standard","hentry","category-callmanager","category-cisco","category-hardware","category-voip"],"_links":{"self":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/3042","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3042"}],"version-history":[{"count":3,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/3042\/revisions"}],"predecessor-version":[{"id":3045,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/3042\/revisions\/3045"}],"wp:attachment":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}