Bit	Kommando	Wert	Bedeutung
0-4	-	0	Analog Normal
		1	Reserved
		2	Analog LAPM
		3	Analog FAX
		4	Analog Voice
		5	Reserved
		6	Reserved
		7	Reserved
		8	ISDN X.75
		9	ISDN V.110
		10	ISDN V.120
		11	ISDN 64 kbit/s synchron transparent
		12	ISDN 64 kbit/s synchron Flagstuff
		13	(ISDN X.31-D)
		14	ISDN BM Rateadaption
		15	(ISDN X.31-B)
		16	Reserved
5	-	0	Reserved
		1	Reserved
6-7	-	0	Keine Kompression
		1	Reserved
		2	V.42bis
		3	Reserved