Options – ISDN NT1B-300TC

NT1B-300 Rack
Up to 24 NT1B-300 units can be installed in this rack, supporting up to 48 ISDN terminals. Optional NT1-200 Battery Backup Power Supply and NT1-200 Add-on Battery units can be added to the PS-50 rack to enable uninterrupted ISDN power during a power failure.

Local Direct Power Option -PWR1
The -PWR1 Desktop Power Supply option provides filtered operating power for “U” models via the phone’s barrel connector.

Local Direct Power Option -PWR3
The -PWR3 Wall-Mount Power Supply option provides filtered operating power for “U” models on pins 7 and 8 of the line cord (PS2 power arrangement). This power supply has sufficient capacity to power one NT1 and two ISDN telephones.

48 Volt Bulk ISDN Power Supply PS-50
The PS-50 is a rack- or wall-mountable bulk power supply for powering up to 50 ISDN telephones and NT1 Network Terminations.
Optional NT1-200 Battery Backup Power Supply and NT1-200 Add-on Battery units can be added to the PS-50 to enable uninterrupted ISDN power during a power failure.