NDA-24296 CHAPTER 3
Page 585
Revision 1.0
PA-24PRTB-A
Primary Rate Interface T r unk
5. Switch Settings
Standard settings of switches on this circuit card a re shown in the table below.
SWITCH
NAME SWITCH
NO. SETTING STANDARD
SETTING MEANING
MB UP Circuit card make busy
DOWN ×Circuit card make busy cancel
MODE 5 AT&T (#4/#5 ESS)
7 NT DMS 100/DMS 250
10 Q-SIG. (ETS 300 17 2 )
LB 0ON Internal loop b ack set
OFF ×Internal loop back cancel
1ON Line loop back set
OFF ×Line loop back cancel
2ON Payload loop ba ck set
OFF ×Payload loop back cancel
3ON D-channe l Handler (DCH) make busy r equest
OFF ×D-channe l Handler (DCH) make busy r equest c ancel
SW0 1ON ×Impedance 100
OFF Imped anc e 110
2ON Send transform er middle point Ground
OFF ×Send transform er middle point Open
3ON Rece ive transformer middle point Ground
OFF ×Rece ive transformer middle point Open
4ON ×Fixed