Features and Specifications Manual
I7 – 371
Doc.
No. 8201 -
Release 1.0
July 2003
ISDN-BRI Trunk
Connections
I-7
FEATURE
DESCRIPTION
ISDN-BRI (Integrated Service Digital Network - Basic Rate Interface) is a
Public Switched Telephone Network (PSTN) service that provides two B
channels (2B + D) for voice call trunking. The B channels are used to
provide two CO/PBX type connections. Caller ID is a standard feature on
ISDN-BRI provided trunks. Caller ID indication displays the calling party
telephone number on the LCD of the Multiline Terminal for CO incoming
calls. This interface provides voice communication path only.
Malicious Call Trace is available for the Australian Network.
Stimulus type network supplementary services (Keypad mode of operation)
is also available.
SYSTEM
AVAILABILITY
Terminal Type
Not applicable
Required Components
To provide ISDN trunk connection:
z
BRT(4)-U( ) ETU
z
CLKG-U( ) Unit
OPERATING
PROCEDURES
Not applicable.
SERVICE
CONDITIONS
Data Assignment
Use Memory Block 1-1-80 (ISDN DTMF Duration/Interdigit Selection)
to specify tone duration (default:100ms.) and interdigit time
(default=70ms.) of DTMF signals for the ISDN trunk.
Use Memory Block 1-1-81 (ISDN Dial Interval Time Selection) to
specify the time (default: 4s) between dialled digits.
Use Memory Block 1-8-33 (Master Clock Selection) to assign the
necessary source for synchronisation clocking.
Use Memory Clock 3-29 (Trunk Interval Transmit Pad Selection) to
specify Internal Transmit (default: 8 dB) Pad (Volume) control.
Use Memory Block 3-31 (Trunk External Transmit Pad Selection) to
specify External Transmit (default: 0 dB) Pad control.
Use Memory Block 3-32 (Trunk External Receive Pad Selection) to
specify External Receive (default: 9 dB) Pad control.
Use Memory Block 3-52 (ISDN Trunk Directory Number Assignment)
to assign the ISDN directory Number.
