You can check out the limit module. 

https://freeswitch.org/confluence/display/FREESWITCH/Limit

From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Dmitriy N. Borisov
Sent: Tuesday, August 11, 2015 9:43 AM
To: freeswitch-users@lists.freeswitch.org
Subject: [Freeswitch-users] How to control number of concurrent user lines?

Hi, All!

Can I control how many calls user can have in same time? I want to allow only one call per registration, but any number of registrations.

--
С уважением,
Борисов Дмитрий
Отдел облачных технологий 1С-Рарус
Тел. +7 (495) 231-20-02 доб.: 15-94
--
with best regards,
Dmitriy Borisov
1C-Rarus Cloud Services
tel.: +7 (495) 231-20-02 add.: 15-94