MVIP Compliant Interface
· Switchable access to any of 512 MVIP timeslots · MVIP clock master or clock slave (automatically selected -- see Section 2.4.1) · Able to terminate the MVIP bus (jumper selectable) · Compatible with any MVIP compliant telephony interface · Can interface with H.100 bus using MVIP bus adapter

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 local 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.

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

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Appendix D

Hardware Specifications

: General
: Line Interface
: Conferencing Limits

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

General

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 · Ringing voltage: 93V AC, 120mA (with -24V DC) minimum
Regulation	-26V DC to -23.5V DC
Ripple	5 mV rms maximum
Recommended Model	· 110-volt countries (ringing): Viking power supply (NMS P/N 2961) · 110-volt countries (non-ringing): Tellabs power supply (NMS P/N 2169) · 220-volt countries: CNB power supply (NMS P/N 31468)


Board Power Requirements
Supply Voltage	Current
+5 DC	400 mA (typ), 500 mA (max)
-12 DC	250 mA (typ), 325 mA (max)
+12 DC	220 mA (typ), 300 mA (max)
Total Power: 13.6 W max (all channels off-hook)

Note: These figures correspond to a CX 1000 24 port interface board.

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 (automatically selected -- see Section 2.4.1) · Able to terminate the MVIP bus (jumper selectable) · Compatible with any MVIP compliant telephony interface · Can interface with H.100 bus using MVIP bus adapter 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 local 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.

Environment
Operating Temp	0 - 50 deg C
Storage Temp	-20 to 70 deg C
Humidity	5% to 80%, non-condensing

Line Interface

Telephone Interface

Line Interface

Operator Workstation (local phone) with Ringing

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 local phones and to a power supply. For European installations, this cable is integrated into the power supply.

Return Loss (ref. 600 ohms +2.2 uF standard)

20 dB min. (ERL)

4 to 2 Wire Gain Tolerance

+/- 1 dB

2 to 4 Wire Gain Tolerance

+/- 1 dB

Frequency Response
300 Hz - 3200 Hz
Reference to 1 kHz

+/- 1 dB

Signal Overload Level

+3 dBm

Idle Channel Noise through connection

< 20 dBrnC

Crosstalk

< -70 dB at 1 kHz

Off-hook detect

Guaranteed Detect: current > 7 mA
Guaranteed No Detect: current < 4 mA

Operating Loop Current

· Battery Enabled:
25 mA max.
20 mA at loop resistance = 480 ohms
· Battery Disabled:
0 mA tip to ring
40 uA max. tip or ring to ground

Maximum Cable Distance

24 AWG: 2000 ft.
0.6 mm: 700 m
(max resistance: 100 ohms)

Telephone Interface
Line Interface	Operator Workstation (local phone) with Ringing
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 local phones and to a power supply. For European installations, this cable is integrated into the power supply.
Return Loss (ref. 600 ohms +2.2 uF standard)	20 dB min. (ERL)
4 to 2 Wire Gain Tolerance	+/- 1 dB
2 to 4 Wire Gain Tolerance	+/- 1 dB
Frequency Response 300 Hz - 3200 Hz Reference to 1 kHz	+/- 1 dB
Signal Overload Level	+3 dBm
Idle Channel Noise through connection	< 20 dBrnC
Crosstalk	< -70 dB at 1 kHz
Off-hook detect	Guaranteed Detect: current > 7 mA Guaranteed No Detect: current < 4 mA
Operating Loop Current	· Battery Enabled: 25 mA max. 20 mA at loop resistance = 480 ohms · Battery Disabled: 0 mA tip to ring 40 uA max. tip or ring to ground
Maximum Cable Distance	24 AWG: 2000 ft. 0.6 mm: 700 m (max resistance: 100 ohms)

The following tables list the signals and pin numbers from the CX 1000 board to the local local 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 58 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	58	22
	T	57	47
23	R	17	23
	T	38	48
24	R	18	24
	T	39	49

Conferencing Limits

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

(Page 1 of 1 in this chapter) Version

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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	58	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	58	22
	T	57	47
23	R	17	23
	T	38	48
24	R	18	24
	T	39	49

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 General

Conferencing Limits

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	58	22
	T	57	47
23	R	17	23
	T	38	48
24	R	18	24
	T	39	49