Editing SNDCP (section)

'''SNDCP''', Sub Network Dependent Convergence Protocol, is part of [[network layer|layer 3]] of a [[GPRS]] protocol specification. SNDCP interfaces to the [[Internet Protocol]] at the top, and to the GPRS-specific [[Logical Link Control]] (LLC) protocol at the bottom.

In the spirit of the GPRS specifications, there can be many implementations of SNDCP, supporting protocols such as [[X.25]].  However, in reality, IP (Internet Protocol) is such an overwhelming standard that X.25 has become irrelevant for modern applications, so all implementations of SNDCP for [[GPRS]] only support IP as the payload type.

The SNDCP layer is relevant to the protocol stack of the mobile station and that of the [[SGSN]], and works when a [[PDP Context]] is established and the [[quality of service]] has been negotiated.