ADTRAN 1200051L5, 61200051L1, 1200051L6, 1200051L2 user manual S52.......SWITCH Type, = Nec

Appendix D: S-Register List

S47.......RS 366 TIME	Determines the amount of time the RS-366 port waits
	for either EON or inactivity to terminate a dial string
	before dialing a number.
	0		= Wait for EON only
	10		= Wait for 1 second or EON
	20		= Wait for 2 seconds or EON
	50		= Wait for 5 seconds or EON (default)
	100		= Wait for 10 seconds or EON
	200		= Wait for 20 seconds or EON
S50.......LINE MODE	Selects the operating mode of the ISU 2x64.
	0	=	Dial service (switched service) (default)
	1	=	Leased service (non-switched service)
S51.......LINE CLOCK	Selects the clock mode in leased mode.
	0	=	Slave (default)
	1	=	Master (Leased line only, LDM application only)
S52.......SWITCH TYPE	Selects the network switch type for dial service.
	0	= AT&T 5ESS (default)
	1	= Northern Telecom DMS-100
	2	= National ISDN-1
	3	= NEC
	4	= Euro ISDN*
	5	= VN4*
	6	= TDX10*
	7	= TDX1B*
	8	= KDD*
	9	= NTT*

*Only available on part numbers 1200051L5 and 1200051L6.

S53.......CALL TYPE	Call type
	0	= Speech
	1	= Audio
	2	= 56 kbps data
	3	= 64 kbps data (default)
	5	= 128 kbps data

114 ISU 2x64 Dual Port ISDN Service Unit User Manual 61200051L1-1D