{"id":57,"date":"2010-02-12T11:04:17","date_gmt":"2010-02-12T16:04:17","guid":{"rendered":"https:\/\/easyonhold.com\/blog\/?p=57"},"modified":"2012-06-01T15:20:51","modified_gmt":"2012-06-01T19:20:51","slug":"audio-file-formats-for-telephone-system-on-hold","status":"publish","type":"post","link":"https:\/\/easyonhold.com\/blog\/audio-file-formats-for-telephone-system-on-hold\/","title":{"rendered":"Audio File Formats For Telephone System On Hold"},"content":{"rendered":"<p>Better <em>telephone system<\/em> technology allows message on hold audio to be loaded directly into the phone system, rather than played from an outside source, such as a <em>music on hold player.<\/em><strong> <\/strong><\/p>\n<p>If you&#8217;re using your <em>phone system&#8217;s internal music on hold<\/em> capabilities, you will need to know the required file format. You message on hold provider should be able to offer the correct format for your <em>phone system<\/em>.<strong><\/strong><\/p>\n<p><strong>Here is a list of the most commonly used file formats for telephone system music on hold:<\/strong><\/p>\n<p><strong>PCM (pulse code modulation) refers to an uncompressed .wav file:<\/strong><\/p>\n<ul>\n<li>PCM .wav\u00a0\u00a0\u00a0 44.1 kHz, 16 Bit<\/li>\n<li>PCM .wav\u00a0\u00a0\u00a0 48 kHz, 16 Bit<\/li>\n<li>PCM .wav\u00a0\u00a0\u00a0 16 kHz, 8 Bit<\/li>\n<li>PCM .wav\u00a0\u00a0\u00a0  8 kHz, 8 Bit<\/li>\n<\/ul>\n<p><strong>U-Law (also known as mu-law) and A-Law are special compression schemes:<\/strong><\/p>\n<ul>\n<li>CCIT u-Law (.wav) 8 kHz, 8 Bit<\/li>\n<li>CCIT a-Law(.wav)\u00a0 8 kHz, 8 Bit<\/li>\n<\/ul>\n<p><strong>ADPCM (adaptive pulse code modulation) differs from PCM, in that the PCM .wav files are stored using linear samples, while ADPCM uses deltas between samples.<\/strong><\/p>\n<ul>\n<li>IMA ADPCM(.wav)\u00a0\u00a0 8 kHz, 4 Bit<\/li>\n<\/ul>\n<p><strong>Dialogic ADPCM files are always 4 Bit files. <a href=\"http:\/\/en.wikipedia.org\/wiki\/Dialogic_ADPCM\" target=\"_blank\">Learn more.<\/a><\/strong><\/p>\n<ul>\n<li>DIALOGIC ADPCM (.vox) 6 kHz<\/li>\n<li>DIALOGIC ADPCM (.vox) 8 kHz<\/li>\n<\/ul>\n<p><strong>G711 is a type of U-Law or A-Law. <a href=\"http:\/\/www.answers.com\/topic\/g-711\" target=\"_blank\">More here.<\/a><\/strong><\/p>\n<ul>\n<li>G711 u-Law (.vox) 6 kHz<\/li>\n<li>G711 u-Law (.vox) 8 kHz<\/li>\n<li>G711 a-Law (.vox) 6 kHz<\/li>\n<li>G711 a-Law (.vox) 8 kHz<\/li>\n<\/ul>\n<p><strong>MP3 is extremely common. Excellent results are obtained with a\u00a0 <a href=\"http:\/\/en.wikipedia.org\/wiki\/Monaural\" target=\"_blank\">monaural<\/a> 128 Kbps .mp3 file.<\/strong><\/p>\n<ul>\n<li>MPEG-3 (.mp3) 128 Kbps<\/li>\n<\/ul>\n<p><strong>The .au file extension was begun by Sun Microsystems. It is similar to .wav formats, but requires the .aw file extension.<\/strong><\/p>\n<ul>\n<li>.au\u00a0\u00a0 u-Law 8 kHz, 8 Bit<\/li>\n<li>.au\u00a0\u00a0 a-Law 8 kHz, 8 Bit<\/li>\n<li>.au\u00a0\u00a0 PCM 8 Bit<\/li>\n<li>.au\u00a0\u00a0 PCM 16 Bit<\/li>\n<\/ul>\n<p><strong>If converting your own files&#8230;<\/strong><\/p>\n<p>If you are converting audio from one file format to another, be aware that it is best to begin with the native file format, that is, the highest-quality original format in which the audio was created. Often this is a 16 Bit .wav file. To work with converting audio files, you might want to try the <a href=\"http:\/\/download.cnet.com\/Switch-Sound-File-Converter\/3000-2140_4-10327491.html\" target=\"_blank\">SwitchSound audio file converter.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Better telephone system technology allows message on hold audio to be loaded directly into the phone system, rather than played [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","_uag_custom_page_level_css":"","footnotes":""},"categories":[26],"tags":[16,8],"class_list":["post-57","post","type-post","status-publish","format-standard","hentry","category-setup-installation","tag-audio-files","tag-music-system"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Audio File Formats For Telephone System On Hold<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/easyonhold.com\/blog\/audio-file-formats-for-telephone-system-on-hold\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Audio File Formats For Telephone System On Hold\" \/>\n<meta property=\"og:description\" content=\"Better telephone system technology allows message on hold audio to be loaded directly into the phone system, rather than played [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/easyonhold.com\/blog\/audio-file-formats-for-telephone-system-on-hold\/\" \/>\n<meta property=\"og:site_name\" content=\"Easy On Hold | Blog\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/easyonhold\" \/>\n<meta property=\"article:published_time\" content=\"2010-02-12T16:04:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2012-06-01T19:20:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/easyonhold.com\/blog\/wp-content\/uploads\/cropped-eoh_logo-light-sqr-notag-01-scaled-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"512\" \/>\n\t<meta property=\"og:image:height\" content=\"512\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Tim Brown\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@EasyOnHold\" \/>\n<meta name=\"twitter:site\" content=\"@easyonhold\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Tim Brown\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/easyonhold.com\\\/blog\\\/audio-file-formats-for-telephone-system-on-hold\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/easyonhold.com\\\/blog\\\/audio-file-formats-for-telephone-system-on-hold\\\/\"},\"author\":{\"name\":\"Tim Brown\",\"@id\":\"https:\\\/\\\/easyonhold.com\\\/blog\\\/#\\\/schema\\\/person\\\/d14a61bcea925041027b62ac159e24ee\"},\"headline\":\"Audio File Formats For Telephone System On Hold\",\"datePublished\":\"2010-02-12T16:04:17+00:00\",\"dateModified\":\"2012-06-01T19:20:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/easyonhold.com\\\/blog\\\/audio-file-formats-for-telephone-system-on-hold\\\/\"},\"wordCount\":331,\"publisher\":{\"@id\":\"https:\\\/\\\/easyonhold.com\\\/blog\\\/#organization\"},\"keywords\":[\"Audio Files\",\"Music System\"],\"articleSection\":[\"Setup - 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