IS128NT1+

SPECIFICATIONS

Type

• External
• Wall mounted

U Interface

• Comply with ITU-T G.961
• Meet ITU-T K.21 line protection
• 1 x U interface port
• 2-wire metallic line
• 2B1Q line coding
• Maximum input DC voltage:115V
• Minimum input DC voltage:28V
• Metallic bypass(optional)

S/T Interface

• Comply with ITU-T I.430
• 2 x RJ45 modular jack
• 4-wire metallic line
• AMI line coding
• Terminating resistance selectable
• for 100£[, 50£[or none
• S/T PS1 output voltage:
• 40VDC, -15%~+5%
• S/T output power :
• Normal mode : 4W
• Restricted mode : 420mW
• PS1 polarity reversed

Connection

• Point-to-point
• Point-to-Multipoint

Analog Port

• 2 x RJ11 modular jack
• ITU-T G.711 a-law/u-law
• -40 ~ -57DC power feeding
• DTMF dialing
• Polarity reversal
• Ring signal : 45 - 55 Vrms
• Tone source generation : dial tone
• busy tone, incoming tone,
• holding tone, inner ring-back tone
• Inner intercom

Service Function

• Network supplementary service

• call waiting
• call transfer
• call forwarding
• three party conference

LED

• LOCAL : Local Power Supply
• LINE : Remote Power Supply
• SYNC/ : U and S/T synchronization
• TEST :Network Loopback test
• DTR : Data Terminal Ready
• TD : Transmit Date
• RD : Receive Data

Power

• Input:90/260VAC, 50~60Hz
• Output:40VDC, -15%~+5%

Operation

• 0 to 50 degree C

Humidity

• 10 to 95% RH

Dimension

• 212Wx128Dx39H (mm)