Veermount Technology TeleHawk 3 Installation Manual - page 11
Veermount Technology
Tele
Hawk
3
Installation manual
Page
10
of
14 pages
4
. Telephone circuit requirements
LINE REQUIREMENTS
TeleHawk3 is designed to be connected to a single
analogue
telephone line. This can be a dedicated, ex-directory PSTN line or a
PABX extension line.
NOTE : The system will not work with digital exchanges unless connected to a specially provided analogue port, supplied by the
PABX manufacturer.
EXCHANGE LINE CONNECTION
- It is the responsibility of the customer to contact British Telecom or the chosen line provider
to arrange for the installation of the ex - directory line. Do not use this exchange line for any other reason.
EXTENSION LINE CONNECTION
- It is the responsibility of the customer to ensure that there is compatibility between
TeleHawk3 and the PABX or other telephone system to which it is connected (see ‘Required PABX Characteristics’). Do not use the
chosen extension line for any other reason.
In either case it is the responsibility of the Installer to liase with and assist the customer regarding provision of the line and to contact
Veermount if in any doubt.
PSTN Line Connection
For PSTN line service, a standard BT line jack master socket will need to be provided and sited not far from the point of installation.
The TeleHawk3 must be terminated at this socket. It is recommended also that the BT type master socket be fitted into a protected
location and that the distance between the master socket and the TeleHawk3 panel is less than 20 metres.
It may be necessary to request the gain balance of the BT line to be set to 3. If so, Call BT on 151 (domestic line) or 154 (business
line) to arrange for this to be done.
PABX line connection
For PABX service the TeleHawk3 can be connected via a suitable extension telephone socket.
The PABX specification must meet the following standards:
Ringing Voltage
>35v rms 25Hz or 50Hz
Current in the telephone (off hook)
25mA minimum
Dialling system
DTMF
Dialling Tone
Continuous Tone
Frequency: 270 – 540Hz
Busy Tone
Beep/Pause sequence for more than 10 secs
Frequency: 300 – 500 Hz
Beep: 100 – 600 ms
Pause: 100 – 600 ms
Distant Ringing Tone
Beep/Pause sequence until far end off hook
Frequency: 350 – 500 Hz
Beep: 0.2 sec – 1.6 sec
Beep + Pause sequence
Call Voltage Transmitted by the Switch
Ringing duration:
Pause Duration:
Frequency: 50Hz or 25Hz
1.5s Plus or minus 0.5s
3s plus or minus 2s
-ooo0ooo-
Ref: Docs/Manuals/TeleHawk3
Issue 2.0 December 06