Figure 1-4 Frame Configuration Of 24-Dti (12 Multiframe) - NEC Univerge SV9100 Manual

2.2

Figure 1-4 Frame Configuration of 24-DTI (12 Multiframe)

CH1
s
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
s
FRAME 1
128 
S
1-4
Input
Line Rate
Pulse Amplitude (Base to Peak)
Frame Synchronization Pattern
Input Jitter
Wander
Cable Length from SV9100 to
MDF or External Equipment
AMI: Alternate Mark Inversion

ZCS: Zero Code Suppression
B8ZS: Bipolar Eight Zero Substituting
Frame Configuration for 24 DTI
According to the AT&T Specifications for 24-channel transmission, there are two
frame configurations: 12 Multiframe (D4) and 24 Multiframe (ESF).
12 Multi-Frame (D4)
This frame has 12 Multiframes, and each Multiframe has a 24-channel PCM
signal (8 bits/channel) and an S (Superframe) bit.
of 24-DTI (12 Multiframe)
Configuration of 24-DTI (24 Multiframe)
CH2 CH3
FRAME 2 FRAME 3
1.544 Mbps
1.5 volts ~ 3 volts
100011011100
ITU-T Fig.1/G743
±
138UI, –193UI or –138UI, +193UI
Maximum 196m (655 ft.) with
(22 AWG) twisted-pair cable
shows the frame configuration, and
shows the frame bit assignment.
Issue 2.0
±
200 ppm (130 ppm)
Figure 1-4 Frame Configuration
Figure 1-5 Frame
CH24
1 2 3 4 5 6 7 8
FRAME 12
S: Superframe Bit
General Information <US Only>