Splicecom Maximiser - Trunk NT Mode Dongles

Installation and Reference Manual
Technical Data
Installation and Reference Manual v3.2/0410/6 341
Socket Plug
Pin
Description
2 & 5
Shorted
3 & 4 Not connected
Due to its simplicity and the use of a POTS port there are several inherent limitations, i.e.
1 The normal POTS bandwidth filters are applied and suppress frequencies below 100Hz and above
3kHz.
2 There is no volume control in the adapter or elsewhere in the system and so this function must be
supplied by the external device.
3 The POTS port presents a relatively high impedance source to the external device and has low
output levels. This necessitates a high impedance input on the external device. It is highly
recommended to test each configuration before installation to ensure appropriate output levels
are attained.
Trunk NT Mode Dongles
These dongles are used to swap the transmit and receive pairs from the ISDN connector to allow a
straight category 5 UTP cable to be used to connect to the slaved device, e.g. another PBX or video
conferencing equipment.
The BRI dongles also provide termination resistors that are usually provided by a telephone company’s
NT.
The dongles may be purchased from your reseller or created as follows:
PRI Cross-over Dongle
RJ45 connector
pin out
RJ45 Connector
pin out
1 4
2 5
3
3
4
1
5
2
6 6
7 7
8
8
1
2
3
4
5
Channel A
Channel B
Shield