Section: 6.1.3.2 Secondary PDP Context Activation Procedure
Content: The purpose of this procedure is to establish an additional PDP context between the MS and the network for a specific Traffic Flow Template (TFT) and QoS profile on a specific NSAPI, when one or more PDP contexts has/have already been established for the particular PDP address and APN. The MS shall include a request for a TFT comprising at least one packet filter applicable for the uplink direction. Depending on the selected Bearer Control Mode being 'MS only' or 'MS/NW', the secondary PDP context activation procedure may either be initiated by the MS or by either the MS or the network, respectively. However, the network and the MS shall not initiate a secondary PDP context activation procedure for established PDP context of "non IP" PDP type. The network shall allocate packet filter identifiers and manage packet filter evaluation precedence for the packet filters added by the network. The MS shall allocate packet filter identifiers and manage packet filter evaluation precedence for the packet filters added by the MS. If there is a PDN connection for emergency bearer services established, the MS shall not initiate a secondary PDP context activation procedure for this connection unless triggered by the network. NOTE: 3GPP TS 23.060[ General Packet Radio Service (GPRS); Service description; Stage 2 ]  [74] subclause 9.3 specifies that a packet filter applicable for the downlink direction is not mandatory in a TFT.