6.4.3 Limited set of PLMN connection types (for EDGE channels)

3GPP43.010GSM Public Land Mobile Network (PLMN) connection typesRelease 17TS

Figure 8 provides the information transfer protocol models for the identified set of PLMN connection types for support of TCH/F28.8 or TCH/F43.2 and figure 9 the models for the support of TCH/F32.0. The description of models given in subclause 6.4.1 applies also to figures 8 and 9.

When a TCH/F28.8 channel is used in multislot configurations, multiple EDGE multiplexing functions are applied on both sides of the air-interface; i.e. one multiplexing function  on each side of the air interface  is associated with each air-interface channel.

When TCH/F32.0 channels are used in double slot configurations, no rate adaptation is applied as the PLMN offers a ’64 kbit/s pipe’ between TE and an external network. When TCH/F32.0 channels are used in single slot configurations, the ITU-T I.460 rate adaptation is applied. (For details refer to 3GPP TS 44.021).

Figure 8: Information transfer protocol models for PLMN connections using EDGE channels

Figure 9: Information transfer protocol models for PLMN connections using TCH/F32.0 EDGE channels