Norstar ICS Wiring Charts

The following wiring charts describe the three ICS connectors: 1, 2, and3, as shown below.

1. ICS telephone (extns) wiring chart

T and R represent station connections and should not be confused with Tip and Ring on external lines.
Station connections are non-polarized.

Pin	Colour	Wire colour	Port	Service	Phones	Default DN
26 1		White-Blue Blue-White	101	T R	1	21/221/2221
27 2		White-Orange Orange-White	102	T R	2	22/222/2222
28 3		White-Green Green-White	103	T R	3	23/223/2223
29 4		White-Brown Brown-White	104	T R	4	24/224/2224
30 5		White-Slate Slate-White	105	T R	5	25/225/2225
31 6		Red-Blue Blue-Red	106	T R	6	26/226/2226
32 7		Red-Orange Orange-Red	107	T R	7	27/227/2227
33 8		Red-Green Green-Red	108	T R	8	28/228/2228
34 9		Red-Brown Brown-Red	109	T R	9	29/229/2229
35 10		Red-Slate Slate-Red	110	T R	10	30/230/2230
36 11		Black-Blue Blue-Black	111	T R	11	31/231/2231
37 12		Black-Orange Orange-Black	112	T R	12	32/232/2232
38 13		Black-Green Green-Black	113	T R	13	33/233/2233
39 14		Black-Brown Brown-Black	114	T R	14	34/234/2234
40 15		Black-Slate Slate-Black	115	T R	15	35/235/2235
41 16		Yellow-Blue Blue-Yellow	116	T R	16	36/236/2236
42 17		Yellow-Orange Orange-Yellow	117	T R	17	37/237/2237
43 18		Yellow-Green Green-Yellow	118	T R	18	38/238/2238
44 19		Yellow-Brown Brown-Yellow	119	T R	19	39/239/2239
45 20		Yellow-Slate Slate-Yellow	120	T R	20	40/240/2240
46 21		Violet-Blue Blue-Violet	121	T R	21	41/241/2241
47 22		Violet-Orange Orange-Violet	122	T R	22	42/242/2242
48 23		Violet-Green Green-Violet	123	T R	23	43/243/2243
49 24		Violet-Brown Brown-Violet	124	T R	24	44/244/2244
50 25		Violet-Slate Slate-Violet	----	----	n/c	----

2. ICS telephone and auxiliary equipment wiring chart

T and R represent station connections and should not be confused with Tip and Ring on external lines.
Station connections are non-polarized.

Pin	Colour	Wire colour	Port	Service	Phones	Default DN
26 1		White-Blue Blue-White	125	T R	25	45/245/2245
27 2		White-Orange Orange-White	126	T R	26	46/246/2246
28 3		White-Green Green-White	127	T R	27	47/247/2247
29 4		White-Brown Brown-White	128	T R	28	48/248/2248
30 5		White-Slate Slate-White	129	T R	29	49/249/2249
31 6		Red-Blue Blue-Red	130	T R	30	50/250/2250
32 7		Red-Orange Orange-Red	131	T R	31	51/251/2251
33 8		Red-Green Green-Red	132	T R	32	52/252/2252
34 9		Red-Brown Brown-Red	----	----	n/c
35 10		Red-Slate Slate-Red	----	----	n/c
36 11		Black-Blue Blue-Black	----	----	n/c
37 12		Black-Orange Orange-Black	----	----	n/c
38 13		Black-Green Green-Black	----	----	n/c
39 14		Black-Brown Brown-Black	----	----	n/c
40 15		Black-Slate Slate-Black		T R	Page
41 16		Yellow-Blue Blue-Yellow		Make Common	Ext. page Ext. page
42 17		Yellow-Orange Orange-Yellow		T R	Music
43 18		Yellow-Green Green-Yellow	----	----	reserved
44 19		Yellow-Brown Brown-Yellow		Make Common	Aux. ring
45 20		Yellow-Slate Slate-Yellow	----	----	reserved
46 21		Violet-Blue Blue-Violet	----	----	n/c
47 22		Violet-Orange Orange-Violet	----	----	reserved
48 23		Violet-Green Green-Violet	----	----	reserved
49 24		Violet-Brown Brown-Violet	----	----	reserved
50 25		Violet-Slate Slate-Violet	----	----	reserved

3. ICS external loop start lines wiring

Pin	Colour	Wire colour	Port	Service	Phones
26 1		White-Blue Blue-White	201	T R	1
27 2		White-Orange Orange-White	202	T R	2
28 3		White-Green Green-White	----	----	----
29 4		White-Brown Brown-White	----	----	----
30 5		White-Slate Slate-White	203	T R	3
31 6		Red-Blue Blue-Red	204	T R	4
32 7		Red-Orange Orange-Red	----	----	----
33 8		Red-Green Green-Red	----	----	----
34 9		Red-Brown Brown-Red	225	T R	25
35 10		Red-Slate Slate-Red	226	T R	26
36 11		Black-Blue Blue-Black	----	----	----
37 12		Black-Orange Orange-Black	----	----	----
38 13		Black-Green Green-Black	227	T R	27
39 14		Black-Brown Brown-Black	228	T R	28
40 15		Black-Slate Slate-Black	----	----	----
41 16		Yellow-Blue Blue-Yellow	----	----	----
42 17		Yellow-Orange Orange-Yellow	----	----	----
43 18		Yellow-Green Green-Yellow	----	T R	ET1
44 19		Yellow-Brown Brown-Yellow	----	T R	ET2
45 20		Yellow-Slate Slate-Yellow	----	----	----
46 21		Violet-Blue Blue-Violet	----	----	----
47 22		Violet-Orange Orange-Violet	----	----	----
48 23		Violet-Green Green-Violet	----	----	----
49 24		Violet-Brown Brown-Violet	----	----	----
50 25		Violet-Slate Slate-Violet	----	----	----