Hello Freddy, I don't think there's an ESL client library for lazarus/pascal. My best guess is that you can reuse the one written in C if lazarus can P/Invoke system libraries (I'm not familiar with Lazarus at all). Second choice (and a harder one) would be to create your own ESL client. This involves listening on a socket port, parse the events sent by FS and send commands back to freeswitch using sockets. You can take a look at the Java ESL client library source code (org.freeswitch.esl.client) as a reference in case you decide to embark yourself in this titanic task. http://wiki.freeswitch.org/wiki/Java_ESL Good luck! From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Fredy Gonzales Sent: Wednesday, December 14, 2011 2:08 PM To: FreeSWITCH Users Help Subject: [Freeswitch-users] Lazarus - FreeSwitch Hello, Can anybody help me and tell me how do install a module FreeSwitch with Lazarus-Pascal.... And there is any other way beside socket and it is have to be with socket what module activated Saludos. Fredy G.