 packet concealment algorithm. This enables for a consumer- level Internet service that does not have guaranteed bandwidth, yet still accomplishes close to toll quality voice connections. Finally, a trend toward a new service from SPs offering SIP trunks is a recording service. Recording calls for call centers is an important task that was usually carried out in house before the call was sent out the TDM connection to the SP. With the adoption of SIP trunking, this feature can easily be moved into the cloud of the SP using shared methods to reduce the cost of recording conversations. Using the call center service provided on the SIP trunk enables enterprise customers to still be in charge of their recording require- ments, but they are not required to deal with the large-scale infrastructure to complete the recording. In summary, three major trends affecting how call centers will use SIP trunking in the future include Utilization of advanced signaling to move calls between call centers. Adoption of SIP trunking services with specific features to enable for termination and optimized media for remote teleworkers. Cloud-based recording services offered on SIP trunks that enable the customer to re- move the burden of maintaining equipment, but still have the features required for compliance and to get the job done effectively. SIP trunk trends in the call center have a long way to go, but this is one area in which the SP and enterprise customers are working together to offer services that are in great demand. Summary IP telephony has traditionally been about connecting new IP endpoints, such as IP-PBXs from businesses, or IP phones from consumers, to the traditional TDM-based PSTN. The latest trend is for the SP to offer IP-based PSTN connectivity services or trunks. This allows traditional IP-PBX customers, in both large and small businesses, to purchase IP trunking services as opposed to traditional TDM trunking services. This chapter provides an overview of the industry trends in both IP endpoint and IP trunk tech