Rambler's Top100
Siemens AG  Сайт PKU   | ICN
 
---
First Page Previous Page Next Page Last Page

3.3.11 TIEL

Introduction

The TIEL board (tie line E & M) provides four analog tie trunk circuits for E&M signaling for Hicom 150 E OfficePro. The circuits can be configured for one- or two-way operation. They convert incoming analog signals into PCM (pulse-code modulation) signals and convert outgoing PCM signals into analog signals for tie-trunk traffic.

Speech Paths

The speech paths can be set to four-wire or two-wire mode. Four-wire connections should be used for high transmission quality on analog networks (this description deals only with four-wire mode).

The advantage of separate speech paths for the incoming and outgoing directions is that the stability (echo) of a connection is not adversely affected. In addition, repeaters in the transmission equipment compensate for attenuation loss on the line.

E&M Signaling Paths

The E&M signaling paths carry the signals that control connection setup and cleardown. Various interfaces can be selected, depending on the requirements of the remote system or transmission equipment. These interface types have different numbers of wires and different potentials.

Starting Up a Tie Trunk

Before you can start up a tie trunk, you must determine the type of interface supported by the two systems. Type 2 is preferable because it virtually excludes problems with longitudinal voltages.

Characteristics of the Interface Types

E&M interface type 1 (Figure 3-51)
The interface in the transmission equipment does not require negative power feeding. This type uses only two signal wires; the communication system and transmission equipment are non-floating, so they are not protected from longitudinal voltage.
E&M interface type 1A (Figure 3-52)
Same as type 1, but without a 0 V rest potential on the M-wire.
E&M interface type 1B or 5 (Figure 3-53)
The interfaces in both the transmission equipment and the communication system require negative power feeding. This type uses only two signal wires. The two M-wires are connected to 0 V potential only, meaning that no special measures are required to prevent short-circuit currents in the event of ground leakage. The communication system and transmission equipment are non-floating, so they are not protected from longitudinal voltage.
E&M interface type 2 (Figure 3-54)
The interfaces in both the transmission equipment and the communication system require negative power feeding. This type uses four signal wires. The M-contacts are floating, so there is no non-floating link between the communication system and transmission equipment.
 
Interface type 2 is recommended; it provides the best longitudinal voltage protection. 

E&M interface type 3
This type uses four signal wires. The M-signal has GND or Vbattery (- 48 V) for direct TIEL-to-TIEL connection (without converter).

Interface Specifications

Transmit path 
 
Four-wire transmit level 
-3.5 dBr 
Four-wire receive level 
-3.5 dBr 
Characteristic impedance 
600 ohms 
Frequency range 
0.3 to 3.4 kHz, +/- 1 dB 
Dielectric strength of speech wires
against ground 
1 kV surge, 1.2/50 µs and 10/700 µs 
Signaling 
 
Type of E&M interface (programmable)  
1, 1A, 1B, 2, 3, 5 
Protocols 
 
To ANSI/EIA/TIA-464-A, configurable 
Immediate start
Wink signal
Delay signal 
Signaling method 
DP or DTMF 

Characteristics of the Signaling Protocols

Connecting two switching units via a tie trunk requires a protocol supported by both systems. Hicom 150 E OfficePro supports:

Immediate start protocol
No seizure acknowledgment; with answer signal. This is the most widely used protocol internationally.
Wink signal protocol
Proceed-to-send signal by means of wink signal; with answer signal. This protocol is the same as immediate start with the addition of a proceed-to-send signal. It is most useful for connecting systems that are not immediately ready for digit input.
Delay signal protocol
Dialing delay time by means of delay signal; with answer signal. This protocol permits the transmission of dialing information to be delayed until the receiving exchange is ready. It differs from the wink signal protocol only in that the remote system returns a backward signal immediately after seizure even if it is not ready for digit input.

Switches and LEDs

Figure 3-50 TIEL (S30810-Q2520-X)

DIP-FIX Switch Positions

Table 3-47 TIEL-Functions of the DIP-FIX Switches

Function 
Circuit 1 
Circuit 2 
Circuit 3 
Circuit 4 
Switch 
Position 
Switch 
Position 
Switch 
Position 
Switch 
Position 
Type 1 
S103 
 
S102 
1-2 
4-6 
1-2 
S203 
 
S202 
1-2 
4-6 
1-2 
S303 
 
S302 
1-2 
4-6 
1-2 
S403 
 
S402 
1-2 
4-6 
1-2 
Type 1A 
S103 
 
S102 
1-3 
4-6 
1-2 
S203 
 
S202 
1-3 
4-6 
1-2 
S303 
 
S302 
1-3 
4-6 
1-2 
S403 
 
S402 
1-3 
4-6 
1-2 
Type 1B or 5 
S103 
 
S102 
1-3 
4-5 
1-2 
S203 
 
S202 
1-3 
4-5 
1-2 
S303 
 
S302 
1-3 
4-5 
1-2 
S403 
 
S402 
1-3 
4-5 
1-2 
Type 2 
and 
(factory default) 
S103 
S102 
Open 
1-2 
S203 
S202 
Open 
1-2 
S303 
S302 
Open 
1-2 
S403 
S402 
Open 
1-2 
Type 3 
S103 
 
S102 
1-2 
4-6 
1-3 
S203 
 
S202 
1-2 
4-6 
1-3 
S303 
 
S302 
1-2 
4-6 
1-3 
S403 
 
S402 
1-2 
4-6 
1-3 
2-wire speech lines 
S104 
1-3 
4-6 
S204 
1-3 
4-6 
S304 
1-3 
4-6 
S404 
1-3 
4-6 
4-wire speech lines 
(factory default) 
S104 
1-2 
4-5 
S204 
1-2 
4-5 
S304 
1-2 
4-5 
S404 
1-2 
4-5 

Signal Wire Connection

 
The following maximum ranges (without converter) must be taken into account: 
4-wire speech: 8 km (5 miles) with 0.6 mm diameter (22 AWG) wire
2-wire speech: 6 km (3.75 miles) with 0.6 mm diameter (22 AWG) wire

E&M Interface Type 1 (Not for U.S.)

Figure 3-51 E&M Interface Type 1 (Not for U.S.)

E&M Interface Type 1A (Not for U.S.)

Figure 3-52 E&M Interface Type 1A (Not for U.S.)

E&M Interface Type 1B or 5 (Not for U.S.)

Figure 3-53 E&M Interface Type 1B or 5 (Not for U.S.)

E&M Interface Type 2 (Not for U.S.)

Figure 3-54 E&M Interface Type 2 (Not for U.S.)

E&M Interface Type 2 Circuit Diagram, MDFU or MDFU-E Numbering (Not for U.S.)

Figure 3-55 E&M Interface Type 2 Circuit Diagram, MDFU or MDFU-E Numbering (Not for U.S.)

LED Statuses and Their Meanings

Table 3-48 TIEL-LED Statuses

LED status 
(on/off) 
Meaning 
Action 
During Boot Phase and Initialization 
Flickering
(50/50 ms) 
Board test not successful 
Replace board. 
Flashing
(100/100 ms) 
Board not configured 
Inspect visually; if necessary, remove/insert board. 
If status continues, replace board. 
On 
Loading operation in progress 
 
Flashing
(100/100 ms) 
Code could not be loaded 
Replace board. 
Off 
Board loaded 
 
Flashing
(500/500 ms) 
Board loaded but not yet activated 
 
During Operation 
On 
Circuit seized 
 
Flashing in ring cadence 
Circuit in ringing state 
 
Flickering
(450/50 ms) 
Dependability test (loopback test) in progress 
 
Flashing (500/500 ms) 
Circuit out of service (e.g. S1/x in "on" position)  
Check whether the circuit was deactivated with Hicom Assistant E Office or lockout switch. 
Off 
Circuit is idle, no seizure 
 

Cable and SU Connector Assignment (Backplane) (Not for U.S.)

Table 3-49 TIEL-Cable Assignment (Not for U.S.)

Color group 
Pair 
a-Wire 
b-Wire 
SU
connector 
TIEL 
Notes 
BP: X8 
wht/blu 
 
19 
1ka 
Port 1 
Ring 
Transmit with
4-wire speech
Transmit +
receive with
2-wire speech
 
blu/wht 
39 
1kb 
Tip 
wht/ora 
 
38 
1ga 
Ring 
Receive with 4-wire speech 
 
ora/wht 
48 
1gb 
Tip 
wht/grn 
 
27 
1E 
Signal wires 
 
grn/wht 
47 
1SG 
System ground 
wht/brn 
 
16 
1M 
 
brn/wht 
46 
1SB 
System battery 
wht/gry 
 
05 
2ka 
Port 2 
Ring 
Transmit with
4-wire speech
Transmit +
receive with
2-wire speech
 
gry/wht 
45 
2kb 
Tip 
red/blu 
 
14 
2ga 
Ring 
Receive with 4-wire speech 
 
blu/red 
44 
2gb 
Tip 
red/ora 
 
23 
2E 
Signal wires 
 
ora/red 
43 
2SG 
System ground 
red/grn 
 
32 
2M 
 
grn/red 
42 
2SB 
System battery 
red/brn 
 
11 
3ka 
Port 3 
Ring 
Transmit with
4-wire speech
Transmit +
receive with
2-wire speech
 
brn/red 
31 
3kb 
Tip 
10 
red/gry 
 
02 
3ga 
Ring 
Receive with 4-wire speech 
 
gry/red 
22 
3gb 
Tip 
11 
blk/blu 
 
13 
3E 
Signal wires 
 
blu/blk 
33 
3SG 
System ground 
12 
blk/ora 
 
04 
3M 
 
ora/blk 
24 
3SB 
System battery 
13 
blk/grn 
 
15 
4ka 
Port 4 
Ring 
Transmit with
4-wire speech
Transmit +
receive with
2-wire speech
 
grn/blk 
35 
4kb 
Tip 
14 
blk/brn 
 
06 
4ga 
Ring 
Receive with 4-wire speech 
 
brn/blk 
26 
4gb 
Tip 
15 
blk/gry 
 
17 
4E 
Signal wires 
 
gry/blk 
37 
4SG 
System ground 
16 
yel/blu 
 
08 
4M 
 
blu/yel 
28 
4SB 
System battery 

Cable and Connector Assignment (Backplane) (for U.S. Only)

Table 3-50 TIEL-Cable Assignment (Sheet 1 of 2) (for U.S. Only)

Pair 
Color Code 
BackplaneConnector Pins 
TIEL 
Notes 
wht/blu 
26 
Port 1 
Tip 
Transmit for 4-wire speech
Transmit + receive for 2-wire speech
blu/wht 
Ring 
wht/ora 
27 
T1 
Tip 1 
Receive for 4-wire speech 
ora/wht 
R1 
Ring 1 
wht/grn 
28 
SG 
System ground 
Signal wires 
grn/wht 
wht/brn 
29 
SB 
System battery 
brn/wht 
wht/slat 
30 
Port 2 
Tip 
Transmit for 4-wire speech
Transmit + receive for 2-wire speech
slat/wht 
Ring 
red/blu 
31 
T1 
Tip 1 
Receive for 4-wire speech 
blu/red 
R1 
Ring 1 
red/ora 
32 
SG 
System ground 
Signal wires 
ora/red 
red/grn 
33 
SB 
System battery 
grn/red 
red/brn 
34 
Port 3 
Tip 
Transmit for 4-wire speech
Transmit + receive for 2-wire speech
brn/red 
Ring 
10 
red/slat 
35 
T1 
Tip 1 
Receive for 4-wire speech 
slat/red 
10 
R1 
Ring 1 
11 
blk/blu 
36 
SG 
System ground 
Signal wires 
blu/blk 
11 
12 
blk/ora 
37 
SB 
System battery 
ora/blk 
12 
13 
blk/grn 
38 
Port 4 
Tip 
Transmit for 4-wire speech
Transmit + receive for 2-wire speech
grn/blk 
13 
Ring 
14 
blk/brn 
39 
T1 
Tip 1 
Receive for 4-wire speech 
brn/blk 
14 
R1 
Ring 1 
15 
blk/slat 
40 
SG 
System ground 
Signal wires 
slat/blk 
15 
16 
yel/blu 
41 
SB 
System battery 
blu/yel 
16 

Note: Pairs 17 through 25 are not used.

Top of Page
Last Page
First Page Previous Page Next Page

---
---

Rambler's Top100