re to be discussed, depending on the customer's availability and/or needs. It can be, for instance, a dedicated leased line, a VPN connection, or any other secure tunnelling solution, GRX, and even Internet - though this is not recommended for obvious security reasons. Dimensioning of the MMS Solution This can be considered as a traditional case of network dimensioning, where all the network links are supposed to be dimensioned according to the needs for the expected MMS traffic. This section will mostly describe and comment on the process as it can be performed. MMS NETWORK PLANNING Dimensioning of MMS System Servers It is important to note that the actual dimensioning of the MMSC and servers is in most cases a fairly simple exercise, with product dimensioning based on a software license scheme of a maximum number of given transactions per second. It has to be checked that the hardware platforms of the MMSC and additional servers are able to deliver the service as per license agreements. But since the traffic is anyhow going through the whole GPRS network, the key of the dimensioning exercise from the network point of view is in dimensioning both radio and core network elements, including their interfaces. These values are directly calculated from the input provided by the customers in RFQ or similar tendering documentation, and they are the result of product dimensioning required to handle the expected MMS traffic. That MMS traffic handled by the MMS system is the key of the overall network dimensioning exercise. Rollout Network Planning according to Subscriber Growth Forecasts The dimensioning process follows the traditional approach of a year-based evolution, since this is the easiest way to present the MMS dimensioning within the context of the general rollout plan of the network. The network planner needs to get input in some of the traditional fields, often provided by tendering documentation. However, sometimes, because of missing inputs, new assumptions are needed to perform the dimensioning calculation.