eow

ORDER WIRE EQUIPMENT

EOW 300 ( Surpass hiT - 1 / 4 / 16 )

User Guide

N56715450104

SIEMENS

ORDER WIRE EQUIPMENT EOW 300User Guide

Reproduction and communication not allowed without written authorization from Siemens AG

User Guide - N56715450104 Page A0-1

CONTENTS

Order Wire Equipment (EOW).A0-1 to A2-19CONTENTS A0-2

1. GENERAL ...............................................................................................................A1-1 to A1-9 1.1 - Product overview 1.2 - Operating features 1.2.1 - Call management rules 1.2.2 - DMTF sequences 1.2.3 - LEDs 1.2.4 - Tone signals 1.2.5 - Reset button 1.3 - Technical specifications 1.3.1 - V.11 interface - DIGITAL PORTS (#1, #2, #3) 1.3.2 - Z interface - TELSET 1.3.3 - Power supply - PWR 1.3.4 - LOOPS 1.3.5 - Environmental conditionsFigures Figure 1.1 - Overview of the EOW300

A1-1 A1-3 A1-3 A1-4 A1-6 A1-7 A1-7 A1-8 A1-8 A1-9 A1-9 A1-9 A1-9

2. INSTALLATION - COMMISSIONING...................................................................A2-1 to A2-11 2.1 - Installation 2.2 - External ports / connections A2-1 A2-3

2.3.1 - Z interface configuration 2.3.2 - Network configurations 2.3.3.1 - Linear networks 2.3.3.2 - Ring networks 2.4 - Commissioning 2.5 - OperationFigures Figure 2.1 - Mechanical features Figure 2.2 - EOW300 - Different mounting modes Figure 2.3 - EOW300 / External ports - connections Figure 2.4 - EOW 300 Association Figure 2.5 - Typical configuration

A2-8 A2-9 A2-10 A2-10 A2-11 A2-11

User Guide - N56715450104 Page A-0-2 Reproduction and communication not allowed without written authorization from Siemens AG

1 - GENERAL

1. GENERAL 1.1 - Product overviewEOW300 telephone engineering order wire units are deployed along a link or in a transmission network to allow communication between operators for installation or maintenance purposes. The telephones that are connected to the EOW300 are standard off-the-shelf telephones and compatible with the switched network. They must be set to dual tone multifrequency mode (DTMF). The EOW300 units communicate with one another over 64 kbit/s digital channels available on the transmission equipment (optical fibres, microwave links etc). Each EOW300 acts as a digital repeater/multiplexer. All data from one channel (V.11 or Z) is forwarded to the others to broadcast the information throughout the network. Each EOW300 comprises (see Figure 1.1): three 64 kbit/s interfaces (V.11), a local telephone interface (Z interface), LEDs, signalling loop extension contacts (dry loops), a Reset button, a -48 Vdc power supply connector, an external power supply connector. Calls set up via the EOW300 units have the following general features: Calls can be made to a specific telephone, a group of telephones or to all telephones. The EOW300 units provide no confidentiality; any user can join in a conversation that is already set up. The equipment in the EOW300 network can be configured as a "closed loop" (ring networks) provided that one of the EOW300 units in the ring is declared as the "ring master".



1 - GENERAL

Equipment FAULT LED Engaged LED

Remote FAULT LED

ST A FAU LTS

TUS

LOOPS

V11 digital ports #1, #2, #3

Reset

Master LED

Power supply (PWR)

Power supply (Jack)

Power LED (ON)

Telephone socket (TELSET)

V11 Status ports #1, #2, #3

Figure 1.1 - Overview of the EOW300

User Guide - N56715450104 Page A1-2 Reproduction and communication not allowed without written authorization from Siemens AG

1 - GENERAL

1.2 - Operating features 1.2.1 - Call management rulesThe EOW300 operates as follows: In general, a high-pitched beep in the handset signals that the dialled DTMF sequence has been recognized and accepted whereas a low pitched beep indicates that the sequence has not been recognized. During a conversation, two distinctive beeps indicate that a user has lifted or replaced his handset. Calls can be made to a single telephone, a group of telephones or to all the telephones in the network. Calls to a single telephone are made in the usual way by lifting the handset and dialling the number of the required telephone (three digit number). Dialling and its effects (ringing) can be cancelled by hanging up the calling phone. If no call is in progress when the handset is lifted, the EOW300 responds with a dial tone. When the number has been dialled, the local EOW300 responds with a routing tone followed by the ringing tone. Note: For a group call or general call, the routing and ringing tones do not exist. A high pitched beep tells the user that the call request has been accepted. When conversation begins, it cuts out any tone signals to make way for the speech signals. If one handset is lifted, the lifting of a second handset connects the two users, regardless of whether a number has been dialled. If a user lifts his handset when a call is in progress, he is automatically connected to that call. A call ends when all the phones have been hung up. Any DTMF sequence can be dialled when a conversation is already in progress. During conversation, the user can isolate himself from the network by pressing "R" (or with an on-hook pulse of between 50 and 350 ms) to dial a DTMF sequence for example. The same "R" button is used to return to conversation mode. When a telephone is engaged in a call, it does not ring if its number is dialled. It is possible to switch to programming mode at any time. This is for setting up the local EOW300 (assigning the telephone number, group number etc). A self-call function is used to test the local EOW300 (checking the telephone number and the ringing and tone functions). The telephone is disconnected from the EOW300 communication network during this test.



1 - GENERAL

1.2.2 - DTMF sequencesThe DTMF sequences for using and programming the equipment are listed below:

- DTMF using Sequences #, on-hook or Reset sequence. This is for cancelling a DTMF call sequence when entering numbers. ### within three seconds, remote on-hook sequence for telephones off-hook. This works by muting any phone that is off the hook and generating noise. The EOW300 concerned transmits a busy tone in the handset and disconnects the digital summing of the speech signals over the Z interface in both directions. Note: - This mode does not adversely affect telephones that are on the hook. - To end mute mode, simply replace the handset. - Any handset that has been the only one off-hook on the line for more than 10 minutes is automatically muted. *** within three seconds, general call sequence This rings all the phones in the network at the same time. Note: No routing or ringing tones. A high-pitched beep indicates that the dialled sequence has been accepted.

*N within three seconds, group call sequence. N represents a digit from 0 to 9. Note: No routing or ringing tones. A high-pitched beep indicates that the dialled sequence has been accepted.

NNN, individual call sequence, N representing a digit from 0 to 9. Note: For a self-call, dialling your own number generates a busy tone and the telephone rings when it has been hung up. The EOW300 self-call procedure ends the next time the handset is lifted.

** within three seconds, sequence for switching to programming mode. This is for setting up the EOW300. In this mode, the unit disconnects the sound bridge between the Z interface and the V.11 interfaces. This sequence can be dialled at any time. The EOW300 confirms the transition to this mode with six short 440 Hz beeps in the handset. This signal is repeated approximately every three seconds. Simply hang up the handset to exit this mode.


1 - GENERAL

DTMF programming sequences: *1NNN, telephone number programming sequence. N represents a digit from 0 to 9. *2N, group number programming sequence. N represents a digit from 0 to 9. *3CCC, programming sequence for activating each V.11 interface. C is either 0 (port OFF), or 1 (port ON). The first, second or third C respectively selects or deselects the first, second or third port. *0*0, network reset sequence. This remotely reboots all the network units and the local unit after one second. It's necessary to wait for a low-pitched beep between the two *0 sequences for the command to take effect, otherwise the operation must be reordered.

Note :

- All the parameters configured during programming mode (telephone number, group number, port selection) are saved in non volatile memory.

Important:

Default configuration (factory settings).

Parameter Telephone number Group number Active ports

Default setting 000 0 1, 2 and 3



1 - GENERAL

1.2.3 - LEDsLED on Colour Green Off On engaged Green Off Blinking On equipment Red Off On remote Red Off On port #1 Yellow Off Blinking On port #2 Yellow Off Blinking On port #3 Yellow Off Blinking On master Yellow Off Blinking On State : Equipment not powered up : Equipment powered up : Telephone on hook and no call in progress : Telephone on hook and call in progress : Telephone off hook : No faults : DSP or power supply malfunction : No faults : Fault on one of the V.11 channels or "master" mode fault. : Channel 1 inactive : No fault on channel 1 : Fault on channel 1 : Channel 2 inactive : No fault on channel 2 : Channel 2 fault : Channel 3 inactive : No fault on channel 3 : Channel 3 fault : Equipment in slave mode : Equipment in master mode : Equipment in master mode and break in the ring detected

LED table


1 - GENERAL

1.2.4 - Tone signalsDescription Dial tone Routing tone Ringing tone Busy tone Programming mode Failure signal (DTMF sequence not recognized) Acknowledgement signal (DTMF sequence recognized) Off-hook signal On-hook signal Continuous 440 Hz signal 440 HZ signal for 50 ms and silence for 50 ms. 440 Hz signal for 1.5 s then silence for 3.5 s 440 Hz signal for 500 ms then silence for 500 ms. 440 Hz signal for 250 ms then silence for 125 ms. Sequence repeated six times followed by silence for 750 ms 220 Hz signal for 500 ms (low-pitched beep) 880 Hz signal for 500 ms (high-pitched beep) 880 Hz signal for 250 ms then 660 Hz signal for 250 ms 660 Hz signal for 250 ms then 880 Hz signal for 250 ms

Tone table

1.2.5 - Reset buttonPressing the Reset button reboots the DSP on the EOW300 board. The unit's own settings (telephone and group numbers, ports in use etc) are then automatically reloaded from EEPROM.



1 - GENERAL

1.3 - Technical specifications 1.3.1 - V.11 interface - DIGITAL PORTS (#1, #2, #3) Bit rate: Synchronization clocks (64 kHz and 8 kHz) : Polarity of the 64 kHz synchronization clocks: Frame sync signal Electrical levels: Frame sync quality: Timing diagrams:64 kHz Synchronization clock OR

64 kbit/s codirectional and contradirectional in master or slave mode Option of rising or falling edge (no adjustment on the 8 kHz synchronization clock) internal or external RS-422 Usable up to an error rate of 10-3

8 kHz Synchronization clock

Data B7 B8 B1 B2 B3 B4

An EOW300 can be linked to: Transmission equipment via two V.11 ports (any two) for communication in both East and West directions. Transmission equipment via a single V.11 port (any one) for communication in one direction only (East or West). One or more items of equipment (EOW300 or transmission equipment) via one or more V.11 ports (free choice).


1 - GENERAL

1.3.2 - Z interface - TELSETThe Z interface has the following features: Number of wires: Balancing and input impedance: Frequency band: Relative input and output levels: 2 600 300 Hz - 3400 Hz Input: 0 dB, +3 dB Output: -1 dB, -4 dB, -7 dB, -10 dB, -13 dB Selected by switch DTMF

Dialling type:

1.3.3 - Power supply - PWRThe EOW300 is powered by a single voltage with the following characteristics: Voltage between -20 Vdc and -72 Vdc Consumption

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