The Secondary Address section assigns secondary addresses to up to 29 function group and test mode combinations (secondary address 0 is always mapped to the base system; no re-mapping is possible). The available function groups (e.g. RF Non Signalling, GSM 900 Signalling etc.) can be displayed and selected with the roll-key after an Address n field is activated.
The network and the test (signalling) mode are addressed in the remote-control commands in the form of the associated secondary address, see Chapter 5, Setting the Device Addresses, and Chapter 7, Program Examples.
Remote control
SYSTem:REMote:ADDRess:SECondary <Addr>,<FGrp>