Mitel Technical Specification 22

MiNET Specification
5.2.1.1.5Circle Rate / Square Rate (CRSR)
The CRSR octet is defined as follows:
Bits 8 to 5 = Circle Rate
Bits 4 to 1 = Square Rate
The values listed below (decimal) are defined for circle and square rates:
0 = OFF solid
1 = ON solid
2 = rate 2 (250 ms OFF, 250 ms ON)
3 = rate 3 (500 ms OFF, 500 ms ON)
4 = rate 4 (438 ms OFF, 62 ms ON)
5 = rate 5 (62 ms OFF, 438 ms ON)
6 to 13 = pre-definable rates
14 = rate 14 (125 ms OFF, 125 ms ON)
15 = not valid for circle, but for square means square flashes at inverse of circle
5.2.1.1.6Circle / Square Rate Number (CSRN)
The CSRN octet is defined as follows (values are shown in decimal):
Bits 8 to 5 = unused
Bits 4 to 1 = Rate Number
Values 0 to 5, 14, 15 = reserved
Values 6 to 13 = rates 6 to 13
5.2.1.1.7Hardware Control Byte (HCB)
Two HCB octets, HCB0 and HCB1, are defined as shown below.
The defined hardware functions, when set to 1 in bits 6 to 1, shall be turned ON or OFF depending on the
state of bit 8.
The format of the HCB0 octet is as follows:
b8 b7 b6 b5 b4 b3 b2 b1
ON/OFF 0 HS HFS HFMF DG NC RNG
HS = handset microphone (see note 1)
HFS = handsfree speaker
HFMF = handsfree microphone function (see note 2)
DG = DTMF generator (see note 3)
NC = noise cancellation during handsfree operation
RNG = ringer
Note 1- The purpose of the HS bit is to control the handset microphone, earpiece and sidetone together.
Note 2- The purpose of the HFMF bit is to control both the handsfree microphone and the handsfree
algorithm.
Note 3- When the DG bit is enabled, the DTMF generator sends tones to all active local transducers and to
the line as PCM. Disabling the DTMF generator shall not affect a key depression already in
progress (i.e. shall only affect the next key depression).
The format of the HCB1 octet is as follows:
b8 b7 b6 b5 b4 b3 b2 b1
ON/OFF1 0 HFM LIND HSNV SIDE EA
HFM = handsfree microphone (see note 1)
LIND = line DTMF (see note 2)
HSNV = handset nominal volume (see note 3)
SIDE = sidetone
EAR = earpiece
Note 1- The purpose of the HFM bit is to control the handsfree microphone only and therefore is different
from the HFMF bit in HCB0. The latter bit controls both the handsfree microphone and the
handsfree algorithm at the same time.
Mitel Restricted MTS22 (Version B05) 3:12 PM 30/12/10Page 42 of 173