How to enable the connection to 70 sip phones to a pbx in the cloud?

[chacaman]

Hi, guys thanks for time and help

I am Migrating my current Firewall from CISCO ASA to pFsense,
My problem is that when I try to use pfsense as gw of the network of 70 phones only connect 38 as maximum to the pbx and also the calls between phones does not progress, but with cisco asa everything works fine configure my pfsense based on This document

1 - https://doc.pfsense.org/index.php/VoIP_Configuration
2 - https://doc.pfsense.org/index.php/PBX_VoIP_NAT_How-to

I do not work

note: i am using pFsense last version

[KOM]

This is a General Discussion forum. You're more likely to get help if you post in one of the many Support forums that you scrolled past to get here.  Perhaps try Installation and Upgrades or General Questions.