NEC ND-71762(E) system manual Digital Ccis Line

MAINTENANCE PROCEDURE

“13-H”: CCS Link Failure (Permanent)

(1)Meaning

The system message “13-H” indicates that a failure has occurred many times to a common channel signaling link and the link has been placed into make-busy state.

(2)Related System Message

When the failure is a temporary one, the system message “13-I” is output. If the failure of CCIS link restores to normal, “13-J” is output.

Figure 8-3 Digital CCIS Line

CCT

DTI

MDF

Line for speech path and signal

MDF

Digital Carrier

Equipment

Digital Line

to Distant office

CCH

Speech Signal

Control Signal

Figure 8-4 Analog CCIS Line

	Signal Line
	MDF	Analog Carrier
CCH	MODEM	Equipment
		to Distant office
		Control Signal

CHAPTER 8 ND-71762 (E)

Page 104

Issue 2