# VoIP.ms SIP Trunk

[VoIP.ms](https://voip.ms/) is a Montreal-based Voice over IP (VoIP) company that provides a vast range of standard telephony features as well as enhanced communication features to simplify both business and residential communications such as local DID numbers in 60+ countries, it also offers termination (outgoing calls) in over 125 countries across the globe, toll-free numbers, call conferencing and services such as E911, CNAM Lookup, SMS/MMS, virtual fax, virtual PRI and local number portability.

PortSIP PBX integrated the [VoIP.ms SIP trunking](https://voip.ms/) for calls and SMS/MMS that allows you to set up easily.

This article includes the following topics:

* [Purchase a DID on VoIP.ms](https://support.portsip.com/portsip-communications-solution/configuring-sip-trunks/voip.ms-sip-trunk/purchase-a-did-on-voip.ms)
* [Configuring VoIP.MS Register Based Trunk](https://support.portsip.com/portsip-communications-solution/configuring-sip-trunks/voip.ms-sip-trunk/configuring-voip.ms-register-based-trunk)
* [Configuring Outbound & Inbound Calls](https://support.portsip.com/portsip-communications-solution/configuring-sip-trunks/voip.ms-sip-trunk/configuring-outbound-and-inbound-calls)
* [VoIP.ms SMS Integration](https://support.portsip.com/portsip-communications-solution/configuring-sip-trunks/voip.ms-sip-trunk/voip.ms-sms-integration)