For customers that own an existing PBX infrastructure, whether an IP-PBX or the old legacy system offering ISDN PRIs E1/T1 lines with extensions already provisioned on their network, we have the capability to deploy a SIP trunking solution to streamline and transform the enterprise operation into an all-IP network. SIP Trunking enables organizations to utilize their existing switching infrastructure to originate and manage internet telephony calls on their private network.