NEC Mcu 5000a Multipoint Control Unit Equipment Manual

							NECA 340-414-220 Revision 2.0 Page 1 of 2
MCU 5000A Multipoint Control Unit SPR-025
TC5000 OPERATION MODE SETTING
MULTIPOINT TELECONFERENCE RELATED
SUMMARY:
Set the following parameters of teleconference terminal (TC5000).
• Simultaneous multi-way conversation
• Picture switching
STEP PROCEDURE 
1 Enter the following command.
SSPR__ n1 =  x1 __n2 = x2 __ … ni = xi … ¿
ni:
System parameter address8EH 
and 8FH
[1] Addresses (hexadecimal values) on setting the TC5000 operation mode.  The 
operation mode is set in hexadecimal values by dividing the 16 bits (b0 to b15) into 
the upper-half and lower-half 8 bits, or specifically by setting bit 0 and bit 1 in the 
lower-half 8 bits to “1” or “0”.  Accordingly, since the upper-half 8 bits are always 
“00H
”, set only the lower-half 8 bits (address 8EH).
ADDRESS TC5000 OPERATION MODE
8EH Lower-half 8 bits setting address (b0 to b7)
8FH Upper-half 8 bits setting address (b8 to b15) 
						

							Page 2 of 2 NECA 340-414-220 Revision 2.0
SPR-025 MCU 5000A Multipoint Control Unit
TC5000 OPERATION MODE SETTING
MULTIPOINT TELECONFERENCE RELATED
STEP PROCEDURE 
x
i:
System parameter values See below:
[1] System parameter values on setting the TC5000 operation mode for the addresses 
8EH and 8FH.
The factory shipment value for the system parameter is 0000H
.
SYSTEM PARAMETER
PICTURE SWITCHING SIMULTANEOUS TALK
ADDRESS
8FHADDRESS
8EH
00H 00H
Picture broadcasting of the specified terminal which is 
permitted to talkPermitted
00H 01H Not permitted
00H 02H
Automatic switching by talker detectionPermitted
00H 03H Not permitted
2 Verify that the normal response is displayed with “OK
”.
If YES
, go to Step 3
.
If NO
, go to Step 1
.
3 End of procedure. 
						

							NECA 340-414-220 Revision 2.0 Page 1 of 4
MCU 5000A Multipoint Control Unit SPR-026
PICTURE SWITCHING TIMERS 1 TO 4 SETTING
PICTURE RELATED
SUMMARY:Set the timing in picture switching.
STEP PROCEDURE 
Note:
Set the standard value for every communication rate.  A communication rate using a shorter 
timer is more likely to cause picture disturbances.  The standard value is a value capable of 
reducing picture disturbances to a level compatible with practical utility, with only a very few 
picture disturbances.  The standard value corresponding to communication rates are shown in 
the table on next page.  If the line bit rate is higher than the transfer rate, set the timer value 
according to the transfer rate.
The following four timers are available:
• Timer 1: Time required from the sending of a Video Command to Freeze (VCF) for CODEC 
to the switching-end of picture.
• Timer 2: Time required from the switching-end of picture to the detecting of a Video 
Command to Update (VCU) for CODEC.
• Timer  3: Guard time from the detecting of a Video Command to Update (VCU) to the sending 
of a Video Command to Freeze (VCF) of the next picture.
• Timer  4: Time-out time (waiting period) for the reception of a Still picture Sending End (SSE) 
after the sending of a Still picture Sending Command (SSC) at the transmitting 
terminal of still picture.  If the SSE is not received after time-out, MCU transmits a 
Video Command to Freeze (VCF) to the transmitting CODEC (terminal) of still 
picture in order to switch to motion picture.
1 Enter the following command.
SSPR__ n1 =  x1 __n2 = x2 __ … ni = xi … ¿
ni:
System parameter address180H 
and 1AFH
[1] The timer contents corresponding to the addresses (hexadecimal values) on setting the 
picture switching timers 1 to 4. 
						

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SPR-026 MCU 5000A Multipoint Control Unit
PICTURE SWITCHING TIMERS 1 TO 4 SETTING
PICTURE RELATED
STEP PROCEDURE 
LINE BIT RATEADDRESS
TIMER 1 TIMER 2 TIMER 3 TIMER 4
64 kb/s×2 (56 kb/s×2) 180H 181H 182H 183H
128 kb/s (112 kb/s) 184H 185H 186H 187H
192 kb/s (168 kb/s) 188H 189H 18AH 18BH
256 kb/s (224 kb/s) 18CH 18DH 18EH 18FH
384 kb/s (336 kb/s) 194H 195H 196H 197H
512 kb/s (448 kb/s) 190H 191H 192H 193H
768 kb/s (672 kb/s) 198H 199H 19AH 19BH
1152 kb/s (1008 kb/s) 1A4H 1A5H 1A6H 1A7H
1536 kb/s (1344 kb/s) 19CH 19DH 19EH 19FH
1920 kb/s (1680 kb/s) 1A0H 1A1H 1A2H 1A3H
1472 kb/s (1288 kb/s) 1A8H 1A9H 1AAH 1ABH
384 kb/s x 2 (336 kb/s x 2) 1ACH 1ADH 1AEH 1AFH
xi:System parameter values See below:
[1] System parameter values on setting the picture switching timers 1 to 4.
TIMERS 1 AND 2 TIMERS 3 AND 4
SYSTEM PARAMETER TIME SYSTEM PARAMETER TIME
00H    0 ms 00H       0 ms
01H 10 ms 01H 100 ms
::::
FEH 2.54 s FEH 25.4 s
FFH 2.55 s FFH 25.5 s
Time=nnH×10 ms Time=nnH×100 ms 
						

							NECA 340-414-220 Revision 2.0 Page 3 of 4
MCU 5000A Multipoint Control Unit SPR-026
PICTURE SWITCHING TIMERS 1 TO 4 SETTING
PICTURE RELATED
STEP PROCEDURE 
[2] Picture Switch Timer 1 ~ 4 (= 180H ~ 1A7H: Byte)
TRANSFER 
RATETIMER 1 TIMER 2 TIMER 3 TIMER 4
ADDRESSSET UP 
VALUEADDRESSSET UP 
VALUEADDRESSSET UP 
VALUEADDRESSSET UP 
VALUE
64 kbps x 2
56 kbps x 2+180H 400ms
(28H)+181H 1.25s
(7DH)+182H 2.4s
(18H)+183H 10s
(64H)
128 kbps
112 kbps+184H 400ms
(28H)+185H 1.25s
(7DH)+186H 2.4s
(18H)+187H 10s
(64H)
192 kbps
168 kbps+188H 400ms
(28H)+189H 630ms
(3FH)+18AH 1.8s
(12H)+18BH 10s
(64H)
256 kbps
224 kbps+18CH 400ms
(28H)+18DH 420ms
(2AH)+18EH 1.8s
(12H)+18FH 7s
(46H)
512 kbps
448 kbps+190H 400ms
(28H)+191H 240ms
(18H)+192H 1.4s
(0EH)+193H 5s
(32H)
384 kbps
336 kbps+194H 400ms
(28H)+195H 300ms
(1EH)+196H 1.8s
(12H)+197H 7s
(46H)
768 kbps
672 kbps+198H 400ms
(28H)+199H 200ms
(14H)+19AH 1.4s
(0EH)+19BH 5s
(32H)
1536 kbps
1344 kbps+19CH 400ms
(28H)+19DH 60ms
(06H)+19EH 1.0s
(0AH)+19FH 3s
(1EH)
1920 kbps
1680 kbps+1A0H 400ms
(28H)+1A1H 60ms
(06H)+1A2H 1.0s
(0AH)+1A3H 3s
(1EH)
1152 kbps
1008 kbps+1A4H 400ms
(28H)+1A5H 100ms
(0AH)+1A6H 1.0s
(0AH)+1A7H 3s
(1EH)
1472 kbps
1288 kbps+1A8H 400ms
(28H)+1A9H 60s
(06H)+1AAH 1.0s
(0AH)+1ABH 3s
(1EH)
384 x 2 kbps
336 x 2 kbps+1ACH 400ms
(28H)+1ADH 200ms
(14H)+1AEH 1.4s
(0EH)+1AFH 5s
(32H) 
						

							Page 4 of 4 NECA 340-414-220 Revision 2.0
SPR-026 MCU 5000A Multipoint Control Unit
PICTURE SWITCHING TIMERS 1 TO 4 SETTING
PICTURE RELATED
STEP PROCEDURE 
The standard timer values corresponding to communication rates.
LINE BIT RATETIME (PARAMETER VALUE)
TIMER 1 TIMER 2 TIMER 3 TIMER 4
64 kb/s×2 400 ms (28H) 1.25 s (7DH) 2.4 s (18H) 10 s (64H)
128 kb/s 400 ms (28H) 1.25 s (7DH) 2.4 s (18H) 10 s (64H)
192 kb/s 400 ms (28H) 630 ms (3FH) 1.8 s (12H) 10 s (64H)
256 kb/s 400 ms (28H) 420 ms (2AH) 1.8 s (12H) 7 s (46H)
384 kb/s 400 ms (28H) 300 ms (1EH) 1.8 s (12H) 7 s (46H)
512 kb/s 400 ms (28H) 240 ms (18 H) 1.4 s (0EH) 5 s (32H)
768 kb/s 400 ms (28H) 200 ms (14H) 1.4 s (0EH) 5 s (32H)
1152 kb/s 400 ms (28H) 100 ms (0AH) 1.0 s (0AH) 3 s (1EH)
1536 kb/s 400 ms (28H) 60 ms (06H) 1.0 s (0AH) 3 s (1EH)
1920 kb/s 400 ms (28H) 60 ms (06H) 1.0 s (0AH) 3 s (1EH)
1472 kb/s 400 ms (28H) 60 ms (06H) 1.0 s (0AH) 3 s (1EH)
384 kb/s x 2 400 ms (28H) 100 ms (14H) 1.4 s (0EH) 5 s (32H)
2 Verify that the normal response is displayed with “OK
”.
If YES
, go to Step 3
.
If NO
, go to Step 1
.
3 End of procedure. 
						

							NECA 340-414-220 Revision 2.0 Page 1 of 2
MCU 5000A Multipoint Control Unit SPR-027
AUDIO CAPABILITY SETTING
TERMINAL CAPABILITY RELATED
SUMMARY:
Set the audio capability supported by MCU 5000A. MCU 5000A corresponds to 
“G.725 type 0” (but, without A-Law)
STEP PROCEDURE 
Note:
Set the audio capability with the factory shipment value (0AH 00H 00H 00H)
 as a general rule.  
If change is necessary for any  reason, follow the steps described below.
1 Enter the following command.
SSPR__ n1 =  x1 __n2 = x2 __ … ni = xi … ¿
ni:
System parameter address100H 
to 103H
[1] Addresses (hexadecimal values) on setting the audio capability.
The audio capability is set in hexadecimal values by dividing the 32 bits (b0 to b31) 
into four-quarter 8 bits.
ADDRESS AUDIO CAPABILITY
100H Fourth-quarter 8 bits setting address (b0 to b7)
101H Third-quarter 8 bits setting address (b8 to b15)
102H Second-quarter 8 bits setting address (b16 to b23)
103H First-quarter 8 bits setting address (b24 to b31) 
						

							Page 2 of 2 NECA 340-414-220 Revision 2.0
SPR-027 MCU 5000A Multipoint Control Unit
AUDIO CAPABILITY SETTING
TERMINAL CAPABILITY RELATED
STEP PROCEDURE 
x
i:
System parameter values See  below:
[1] System parameter values on setting the audio capability for the addresses 100H to 
103H. The factory shipment value for the system parameter is 0AH 00H 00H 00H
.
SYSTEM PARAMETER  AUDIO CAPABILITY
ADDRESS
103HADDRESS
102HADDRESS
101HADDRESS
100Hm-law (G.725 TYPE 0) G.722-64 G.722-48
00H 00H 00H 00H OFF OFF OFF
00H 00H 00H 02H ON OFF OFF
00H 00H 00H 04H OFF ON OFF
00H 00H 00H 06H ON ON OFF
00H 00H 00H 08H OFF OFF ON
00H 00H 00H 0AH ON OFF ON
00H 00H 00H 0CH OFF ON ON
00H 00H 00H 0EH ON ON ON
ON:  This capability is available.
OFF:  This capability is not available.
2Verify that the normal response is displayed with “
OK”.
If YES
, go to Step 3
.
If NO
, go to Step 1
.
3 End of procedure. 
						

							NECA 340-414-220 Revision 2.0 Page 1 of 6
MCU 5000A Multipoint Control Unit SPR-028
TRANSFER RATE CAPABILITY SETTING
TERMINAL CAPABILITY RELATED
SUMMARY:Set the transfer rates to be used.
STEP PROCEDURE 
Note:
When operating at the several transfer rates, set the several transfer rate capabilities to ON.  
The transfer rates usable, however, may not go beyond the line rates set for the addresses 
between  30H and  37H.
1 Enter the following command.
SSPR__ n1 =  x1 __n2 = x2 __ … ni = xi … ¿
ni:
System parameter address104H 
to 107H
[1] The transfer rates corresponding to the addresses (hexadecimal values) on setting 
the transfer rate capability  setting.
ADDRESS TRANSFER RATE
104H For 64 kb/s, 64 kb/s×2,  128 kb/s, or 192 kb/s
105H For 256 kb/s, 384 kb/s, 512 kb/s,  768 kb/s, or 384 kb/s x 2
106H For 1152 kb/s, 1536 kb/s, 1920 kb/s, or 1472 kb/s
107H Not used
LINE INTERFACE AVAILABLE TRANSFER RATE
T1 64 kb/s, 128 kb/s, 192 kb/s, 256 kb/s, 384 kb/s, 512 kb/s, 768 kb/s, 1152 kb/s, 1536 kb/s, 
64 kb/s x 2, 384 kb/s x 2, and 1472 kb/s
RS 422 64 kb/s, 64 kb/s×2, 128 kb/s, 192 kb/s, 256 kb/s, 384 kb/s, 512 kb/s, 768 kb/s, 1152 kb/s, 
1536 kb/s, 1920 kb/s, and 384 kb/s x 2
INS 64 kb/s, 64 kb/s×2, 384 kb/s, and 384 kb/s x 2 
						

							Page 2 of 6 NECA 340-414-220 Revision 2.0
SPR-028 MCU 5000A Multipoint Control Unit
TRANSFER RATE CAPABILITY SETTING
TERMINAL CAPABILITY RELATED
STEP PROCEDURE 
x
i:System parameter values See below:
[2] System parameter values on setting the transfer rate  capability for the address 104H.  
The factory shipment value for the system parameter is 
C2H.
SYSTEM PARAMETER USABLE TRANSFER RATE
00H None
01H 64 kb/s
02H 64 kb/s×2
03H 64 kb/s and 64 kb/s×2
40H 128 kb/s
41H 64 kb/s and 128 kb/s
42H 64 kb/s×2 and 128 kb/s
43H 64 kb/s, 64 kb/s×2, and 128 kb/s
80H 192 kb/s
81H 64 kb/s and 192 kb/s
82H 64 kb/s×2 and 192 kb/s
83H 64 kb/s, 64 kb/s×2, and 192 kb/s
C0H 128 kb/s and 192 kb/s
C1H 64 kb/s, 128 kb/s, and 192 kb/s
C2H 64 kb/s×2, 128 kb/s, and 192 kb/s
C3H 64 kb/s, 64 kb/s×2, 128 kb/s, and 192 kb/s