Specification Sheet

Specifications
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Description
Asynchronous notification of upgrade availability using Notify
Nonintrusive, in-service upgrades
Report generation and event logging
Statistics in Bye message
Debug and syslog server records: Per-line configurable web
browser
Ping and traceroute diagnostics
Configuration management: Backup and restore
Support for Bonjour
Physical interfaces
1 WAN 100BASE-T RJ-45 Ethernet Port (IEEE 802.3)
1 LAN 100BASE-T RJ-45 Ethernet Port (IEEE 802.3)
2 RJ-11 FXS phone ports for analog circuit telephone device (tip
and ring)
Reset button
Subscriber line interface
circuit (SLIC)
Ring voltage: 40–90 Vpk configurable
Ring frequency: 20–25 Hz
Ring waveform: Trapezoidal
Maximum ringer load: 5 ringer equivalence numbers (RENs)
On-hook voltage (tip and ring): –46 to –56V
Off-hook current: 18–25 mA
Terminating impedance: 600 ohm resistive or 270 ohm + 750
ohm
150 nF complex impedance
Frequency response: 300–3400 Hz
Return loss (600 ohm, 300–3400 Hz): up to 20 dB
Insertion loss (1 Vrms at 1 kHz): 3–4 dB
Total harmonic distortion (THD) (350 mV peak at 300 Hz): up
to 3%
Idle channel noise: 72 dB (typical)
Longitudinal balance: 55 dB (typical)
Off-hook threshold (line seizure): Rdc < 1000 ohm
On-hook threshold (line release): Rdc >10000 ohm
Rdc DC supervisory range: Rdc > 450 ohm