In some places this may be required. Bath fan installation shouldn't be too expensive and is something a pro can install pretty quickly, but be sure to factor this in when planning for shower installation costs.Overall, installing a new shower can greatly improve your bathroom and add value to your home.
Session Initiation Protocol (SIP), connection management protocol developed by the IETF; H.323, one of the first VoIP call signaling and control protocols that found widespread implementation. Since the development of newer, less complex protocols such as MGCP and SIP, H.323 deployments are increasingly limited to carrying existing long-haul network traffic. [citation needed] Media Gateway Control Protocol (MGCP), connection management for media gateways
Determining which Type of Connection to Use for your SIP Trunk. A SIP trunk can be deployed over the Internet or over a line that is dedicated to your organization and that may or may not share bandwidth with other IP traffic. SIP trunk can connect your organization to an ITSP through either an IP-PBX or a Mediation Server. A Mediation Server performs encrypting, decrypting, and data translation between an Office Communications Server deployment on one side and the world beyond on the other.