AT&T 518-600-016 manual Signaling Protected, Mode Location, Type, Same Site Simplex, Standard

TABLE 1-4 Tie Line Preferred Signaling Formats

Installation Situation				Preferred Signaling Format
	From
MERLIN II System			MERLIN II System		Far End
			Signaling	Protected	Signaling	Protected
			Mode and	or	Mode and	or
To		Location	Type	Unprotected	Type	Unprotected
MERLIN II		Same Site	Simplex	N/A	Simplex	N/A
System		or Inter-	Type 5		Type 5
		building
System 25		Same Site	Simplex	N/A	Simplex	N/A
System 75		or Inter-	Type 5		Type 5
		building
System 85		Same Site	Simplex	N/A	Simplex	N/A
		or Inter-	Type 5		Type 5
		building
Dimension		Same Site	E&M	Unprotected	E&M	Unprotected
PBX			Type 1		Type 1
			Compatible		Standard
Dimension		Inter-	E&M	Protected	E&M	Protected
PBX		building	Type 1		Type 1
			Compatible		standard
Other		Same Site	E&M	Unprotected	E&M	Unprotected
			Type 1		Type 1
			Compatible		Standard

1-50 Theory of Operation