CosmoCom has recently been certified for direct SIP Trunking interoperability with AT&T, Global Crossing, and XO Communications. As a pioneer in IP Telephony, CosmoCom has been deployed in dozens of carriers' VoIP networks. The native VoIP architecture of CosmoCall Universe has enabled CosmoCom's IP-based contact center solution to easily integrate with these carriers' VoIP infrastructure.

As carriers roll out their VoIP services, they have added SIP Trunking to their service offerings to allow businesses to directly connect corporate VoIP systems to the carriers' networks. SIP Trunking enables corporations to benefit from the advantages of IP-based contact center solutions without having to also deploy VoIP gateways on the corporate premises. Such a solution greatly reduces both hardware and IT costs as well as the technology expertise required for the corporations deploying VoIP solutions.