{"id":434,"date":"2013-10-23T08:25:29","date_gmt":"2013-10-23T06:25:29","guid":{"rendered":"http:\/\/www.industronic-blog.com\/?p=434"},"modified":"2019-03-19T10:39:39","modified_gmt":"2019-03-19T09:39:39","slug":"two-way-communication-intercom","status":"publish","type":"post","link":"https:\/\/www.industronic.com\/blog\/two-way-communication-intercom\/","title":{"rendered":"Two-way Communication – The Classic Intercom Function"},"content":{"rendered":"

In one of our first blog posts, I gave an introduction to two-way communication, the most common type of voice connection used in Intercom systems (see Intercom and PA\/GA<\/a>). With this blog article, I want to provide more information on two-way communication.<\/p>\n

Communication in Both Directions<\/span> <\/b><\/span><\/h3>\n

A two-way connection provides communication in both directions (bidirectional) where both subscribers can speak and listen alternately, but not simultaneously. One subscriber speaks and the other listens. Only when the first subscriber has finished his message, the other can answer.<\/p>\n

Direct Dial Key or Dial Keypad<\/b><\/span><\/h3>\n

A two-way connection to another subscriber can be established by pressing a direct dial key or by entering a call number using the dial keypad. The advantage of direct dial keys is that the connection to a pre-defined target can be established faster than entering the call number digit by digit. The advantage of dial keypads is that you can establish connections to any desired targets. So, all subscribers are able to speak to each other.<\/p>\n

The illustration below shows the communication process by using a direct dial key.<\/p>\n

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In contrast to conventional telephony, there are no connection setup times. If the target is free and can be reached, a two-way connection is immediately established. For process communication, this means valuable time saving, e.g. if you need to quickly communicate instructions from the control room to the staff in a plant or on a platform. In steel mills, you often inform staff about the next process steps using short announcements such as “Empty the torpedo car!” or “Casting process starts!”. You can also draw people’s attention to potential dangers (“Caution! The crane moves!”).<\/p>\n

Priorities<\/b><\/span><\/h3>\n

You can assign a priority for each two-way connection. This means that an active connection remains busy for other subscribers with the same or a lower priority. Connections with higher priorities can however interrupt the existing ones at any time to ensure that important information is broadcasted, e. g. alarms. The use of priorities is typical for advanced solutions in hazardous areas.<\/p>\n

Remark<\/b><\/span><\/h3>\n

The term “two-way connection” is often abbreviated as “TW connection”. You will also often find the more technical term “half-duplex connection”.<\/p>\n","protected":false},"excerpt":{"rendered":"

In one of our first blog posts, I gave an introduction to two-way communication, the most common type of voice connection used in Intercom systems (see Intercom and PA\/GA). With this blog article, I want to provide more information on two-way communication.<\/p>\n","protected":false},"author":3,"featured_media":436,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[35,80,151,152],"class_list":["post-434","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology","tag-communication","tag-intercom","tag-two-way","tag-two-way-communication"],"_links":{"self":[{"href":"https:\/\/www.industronic.com\/blog\/wp-json\/wp\/v2\/posts\/434","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.industronic.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.industronic.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.industronic.com\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.industronic.com\/blog\/wp-json\/wp\/v2\/comments?post=434"}],"version-history":[{"count":2,"href":"https:\/\/www.industronic.com\/blog\/wp-json\/wp\/v2\/posts\/434\/revisions"}],"predecessor-version":[{"id":3949,"href":"https:\/\/www.industronic.com\/blog\/wp-json\/wp\/v2\/posts\/434\/revisions\/3949"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.industronic.com\/blog\/wp-json\/wp\/v2\/media\/436"}],"wp:attachment":[{"href":"https:\/\/www.industronic.com\/blog\/wp-json\/wp\/v2\/media?parent=434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.industronic.com\/blog\/wp-json\/wp\/v2\/categories?post=434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.industronic.com\/blog\/wp-json\/wp\/v2\/tags?post=434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}