MVIP Compliant Interface
· Switchable access to any of 512 MVIP timeslots · MVIP clock master or clock slave (software selectable) · Able to terminate the MVIP bus (jumper selectable) · Compatible with any MVIP compliant telephony interface

OWS Interface
Crosstalk	-80 dB maximum (0dB, 300 to 400 Hz)
Connector	A high density 62 pin female D-subminiature connector. The adapter cable, with a 62 pin male connector on one end and a male RJ21X on the other, provides for direct connection to OWS phones and to a power supply.

LEDs
· Two yellow LEDs on the end bracket indicate whether the AC and DC voltage are connected correctly. For details, see Chapter 4. · A green LED on the face of the board indicates whether the board is operating correctly. For details, see Chapter 4. · A red LED on the face of the board lights whenever the OWS phone on line interface 1 rings. For details, see Chapter 4.

Bus Connectors
PC-AT Bus	Pin-outs and signals of the PC-AT bus follow IEEE P996 ISA specifications.
MVIP Bus	The MVIP bus connector is a shrouded 40-pin 3M 2540-50020B, positioned as specified in Section 3 of the MVIP-90 Standard, Release 1.1 manual. Pin-outs and signals of the MVIP bus follow the specifications given in the manual.

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Appendix D

Hardware Specifications

Host Interface
Electrical	PC-AT bus designed to IEEE P996 ISA
Mechanical	Designed to IBM's specification, as described in IBM's Personal Computer Hardware Reference Library publication 6361674, Prototype Adapter
Bus Speed	4-8 MHz
I/O Base Address	Selectable to any of 16 I/O addresses

External Power Supply
Output	· -24V DC, 1A minimum current · Boards With Ringing: 93V AC, 120mA (with -24V DC) minimum
Regulation	+/- 1 Volt
Ripple	5 mV rms maximum
Recommended Model	CNB power supply (NMS P/N 31468)

Environment Operating Temp 0 - 50 deg C Storage Temp -20 to 70 deg C Humidity 5% to 80%, non-condensing MVIP Compliant Interface · Switchable access to any of 512 MVIP timeslots · MVIP clock master or clock slave (software selectable) · Able to terminate the MVIP bus (jumper selectable) · Compatible with any MVIP compliant telephony interface OWS Interface Crosstalk -80 dB maximum (0dB, 300 to 400 Hz) Connector A high density 62 pin female D-subminiature connector. The adapter cable, with a 62 pin male connector on one end and a male RJ21X on the other, provides for direct connection to OWS phones and to a power supply. LEDs · Two yellow LEDs on the end bracket indicate whether the AC and DC voltage are connected correctly. For details, see Chapter 4. · A green LED on the face of the board indicates whether the board is operating correctly. For details, see Chapter 4. · A red LED on the face of the board lights whenever the OWS phone on line interface 1 rings. For details, see Chapter 4. Bus Connectors PC-AT Bus Pin-outs and signals of the PC-AT bus follow IEEE P996 ISA specifications. MVIP Bus The MVIP bus connector is a shrouded 40-pin 3M 2540-50020B, positioned as specified in Section 3 of the MVIP-90 Standard, Release 1.1 manual. Pin-outs and signals of the MVIP bus follow the specifications given in the manual.

The following tables list the signals and pin numbers from the AG Connect board to the local OWS telephone sets and power supply: Channel Signal Name DB 62 Connector Pin No. Male RJ21X Pin No. 1 R 44 1 T 43 26 2 R 23 2 T 22 27 3 R 2 3 T 1 28 4 R 3 4 T 24 29 5 R 4 5 T 25 30 6 R 46 6 T 45 31 7 R 5 7 T 26 32 8 R 6 8 T 27 33 9 R 7 9 T 28 34 10 R 49 10 T 48 35 11 R 8 11 T 29 36 12 R 9 12 T 30 37 13 R 10 13 T 31 38 14 R 52 14 T 51 39 15 R 11 15 T 32 40 16 R 12 16 T 33 41 17 R 13 17 T 34 42 18 R 55 18 T 54 43 19 R 14 19 T 35 44 20 R 15 20 T 36 45 21 R 16 21 T 37 46 22 R 50 22 T 57 47 23 R 17 23 T 38 48 24 R 18 24 T 39 49 . Power Supply Connections Signal Name DB 62 Connector Pin No. AMP Connector Pin No. Ext. BAT (-24V DC) 20, 41 1 Ext. BAT COMMON 21, 42 4 AC COMMON 61 3 AC RING (93V AC) 62 2

Channel	Signal Name	DB 62 Connector Pin No.	Male RJ21X Pin No.
1	R	44	1
	T	43	26
2	R	23	2
	T	22	27
3	R	2	3
	T	1	28
4	R	3	4
	T	24	29
5	R	4	5
	T	25	30
6	R	46	6
	T	45	31
7	R	5	7
	T	26	32
8	R	6	8
	T	27	33
9	R	7	9
	T	28	34
10	R	49	10
	T	48	35
11	R	8	11
	T	29	36
12	R	9	12
	T	30	37
13	R	10	13
	T	31	38
14	R	52	14
	T	51	39
15	R	11	15
	T	32	40
16	R	12	16
	T	33	41
17	R	13	17
	T	34	42
18	R	55	18
	T	54	43
19	R	14	19
	T	35	44
20	R	15	20
	T	36	45
21	R	16	21
	T	37	46
22	R	50	22
	T	57	47
23	R	17	23
	T	38	48
24	R	18	24
	T	39	49

Up to 16 seats may be distributed among up to 5 conferences. NMS recommends a maximum of 8 seats per conference.

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Channel	Signal Name	DB 62 Connector Pin No.	Male RJ21X Pin No.
1	R	44	1
	T	43	26
2	R	23	2
	T	22	27
3	R	2	3
	T	1	28
4	R	3	4
	T	24	29
5	R	4	5
	T	25	30
6	R	46	6
	T	45	31
7	R	5	7
	T	26	32
8	R	6	8
	T	27	33
9	R	7	9
	T	28	34
10	R	49	10
	T	48	35
11	R	8	11
	T	29	36
12	R	9	12
	T	30	37
13	R	10	13
	T	31	38
14	R	52	14
	T	51	39
15	R	11	15
	T	32	40
16	R	12	16
	T	33	41
17	R	13	17
	T	34	42
18	R	55	18
	T	54	43
19	R	14	19
	T	35	44
20	R	15	20
	T	36	45
21	R	16	21
	T	37	46
22	R	50	22
	T	57	47
23	R	17	23
	T	38	48
24	R	18	24
	T	39	49

Channel	Signal Name	DB 62 Connector Pin No.	Male RJ21X Pin No.
1	R	44	1
	T	43	26
2	R	23	2
	T	22	27
3	R	2	3
	T	1	28
4	R	3	4
	T	24	29
5	R	4	5
	T	25	30
6	R	46	6
	T	45	31
7	R	5	7
	T	26	32
8	R	6	8
	T	27	33
9	R	7	9
	T	28	34
10	R	49	10
	T	48	35
11	R	8	11
	T	29	36
12	R	9	12
	T	30	37
13	R	10	13
	T	31	38
14	R	52	14
	T	51	39
15	R	11	15
	T	32	40
16	R	12	16
	T	33	41
17	R	13	17
	T	34	42
18	R	55	18
	T	54	43
19	R	14	19
	T	35	44
20	R	15	20
	T	36	45
21	R	16	21
	T	37	46
22	R	50	22
	T	57	47
23	R	17	23
	T	38	48
24	R	18	24
	T	39	49

Channel	Signal Name	DB 62 Connector Pin No.	Male RJ21X Pin No.
1	R	44	1
	T	43	26
2	R	23	2
	T	22	27
3	R	2	3
	T	1	28
4	R	3	4
	T	24	29
5	R	4	5
	T	25	30
6	R	46	6
	T	45	31
7	R	5	7
	T	26	32
8	R	6	8
	T	27	33
9	R	7	9
	T	28	34
10	R	49	10
	T	48	35
11	R	8	11
	T	29	36
12	R	9	12
	T	30	37
13	R	10	13
	T	31	38
14	R	52	14
	T	51	39
15	R	11	15
	T	32	40
16	R	12	16
	T	33	41
17	R	13	17
	T	34	42
18	R	55	18
	T	54	43
19	R	14	19
	T	35	44
20	R	15	20
	T	36	45
21	R	16	21
	T	37	46
22	R	50	22
	T	57	47
23	R	17	23
	T	38	48
24	R	18	24
	T	39	49