psf2115 ETC-unknow, psf2115 Datasheet - Page 71

• Manufacturer Part Number: psf2115
• Description: Isdn Adapter Circuit Ipac
• Manufacturer: ETC-unknow

In the NT-to-TE direction the S channel bits are used for information transmission. Two
S channels (S1 and S2) out of five possible S channels can be accessed by the IPAC.
The S and Q channels are accessed via the IOM-2 interface monitor channel.
The following table shows the S and Q bit positions within the multi-frame.
Table 5
2.4.3
According to ITU recommendation I.430 a multi-frame provides extra layer 1 capacity in
the TE-to-NT direction through the use of an extra channel between the TE and NT (Q-
channel). The Q bits are defined to be the bits in the F
Frame Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
Semiconductor Group
S/T-Interface Multiframing
Multiframe Structure
NT-to-TE
F
ONE
ZERO
ZERO
ZERO
ZERO
ONE
ZERO
ZERO
ZERO
ZERO
ONE
ZERO
ZERO
ZERO
ZERO
ONE
ZERO
ZERO
ZERO
ZERO
ONE
ZERO
A
Bit Position
NT-to-TE
M Bit
ONE
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ONE
ZERO
71
NT-to-TE
S Bit
S11
S21
ZERO
ZERO
ZERO
S12
S22
ZERO
ZERO
ZERO
S13
S23
ZERO
ZERO
ZERO
S14
S24
ZERO
ZERO
ZERO
S11
S21
A
bit position.
Functional Description
TE-to-NT
F
Q1
ZERO
ZERO
ZERO
ZERO
Q2
ZERO
ZERO
ZERO
ZERO
Q3
ZERO
ZERO
ZERO
ZERO
Q4
ZERO
ZERO
ZERO
ZERO
Q1
ZERO
A
Bit Position
PSB 2115
PSF 2115
11.97