API for Telnet

RouterOS Scripting
1

We have prepared php script for connection via telnet protocol where https://pastebin.com/fhSu20Af has been used. Initial process looks great and we are able to connect but when we want to send some command, everything looks like froozen.

Code below:

$t = new \Telnet\Telnet("xxx.xxx.xxx.xxx", 23, 10, "");
        $t->login("login+cte", "password");
       
        $t->setPrompt(">");
        $t->exec("interface");
        $t->exec("print");
        $t->disconnect();

Could anybody help me where we have an issue?
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