{"id":8580,"date":"2020-07-08T00:00:09","date_gmt":"2020-07-07T21:00:09","guid":{"rendered":"https:\/\/trueconf.com\/blog\/?p=8580"},"modified":"2022-06-06T23:25:47","modified_gmt":"2022-06-06T20:25:47","slug":"join-conferences-call-trueconf-users-regular-phone","status":"publish","type":"post","link":"https:\/\/trueconf.com/blog\/knowledge-base\/join-conferences-call-trueconf-users-regular-phone","title":{"rendered":"How to Join Conferences and Call TrueConf Users from a Regular Phone?"},"content":{"rendered":"

Thanks to <\/span>integrated gateway<\/span><\/a>, TrueConf Server can receive external calls over the most popular SIP and H.323 telephony protocols, which allows regular telephone subscribers to call users and conferences on TrueConf Server. The only requirement is an installed corporate PBX that would redirect calls from your telephone network to TrueConf Server.<\/span><\/p>\n

In this article, we\u2019re going to run through an example of such an integration based on Asterisk PBX.<\/span><\/p>\n

Create Special Prefix for Video Conferencing Sessions in Your PBX<\/h2>\n

Create a new SIP rule in your PBX to intercept special format calls from your telephone subscribers, which will redirect calls to another PBX. TrueConf Server will play as this PBX. Note that an algorithm for setting up a new SIP rule depends on your PBX.<\/p>\n

For example, in\u00a0<\/span>Asterisk<\/span> PBX, just add the following string to a configuration file:<\/span><\/p>\n

exten => _06X.,1,Dial(SIP\/${EXTEN:2}\\@192.168.1.100,360)<\/code><\/p>\n

Let\u2019s take a closer look at this string:<\/span><\/p>\n

exten =><\/code>\u00a0creates a new rule for redirecting calls<\/span>;<\/p>\n

_06X.<\/code>\u00a0is a special kind of regular expression determining which numbers will be processed by this rule. For example, _ <\/code>means the beginning of a string, and X.<\/code> is any sequence of random length symbols\u2014this expression redirects any calls starting with 06<\/code><\/span>;<\/p>\n

1<\/code>\u00a0is a rule number in your PBX<\/span>;<\/p>\n

Dial(SIP\/${EXTEN:2}\\@192.168.1.100,360)<\/code>\u00a0is a call command that will be applied to all numbers that satisfy this rule. It has two parameters: <\/span>SIP\/${EXTEN:2}\\@192.168.1.100<\/code> call string and time in seconds (<\/span>360<\/code>) for a device to reach an external server. Where:<\/span><\/p>\n