4-Wire Audio Ports
4-Wire: Input/Output Levels: -16 to 7 dBm @ 600Ω, adjustable in 0.1dB steps
Frequency Response: 5 to 3400Hz; +/-1 dB ref. to 1kHz
Isolation: >60 dB
Idle Noise: <20 dbrnC0
Input Impedance: 600Ω or 100Ω, software selectable each port
Output Impedance: 600Ω, true differential
Hybrid Return Loss: 25dB minimum
Port Signaling
M-Lead Relay: Optical: Coupled MOS
Maximum Contact Voltage: 60V DC, 20V AC
Maximum Current: 50mA
E-Lead Input: Active High Input: Open circuit or >+1.8V DC
Active Low Input: Ground, negative voltage or <+0.32V DC C
lear-Com Signaling: Eclipse and HelixNet DTMF Signaling E&M Lead (COR & PTT) Signaling
Voice-over-IP Module
IP Ports: Format: Supports 10Base-T and 100Base-T
Networking Stack: TCP/IPv4
Protocols: SIP, SDP, RTP, IPV67 and STUN (Simple Traversal of UDP through Network Address Translation)
Codecs: G.711 (fully compatible), G.726 (16/24/33/40 kbps), G.722, DVI4 (narrow/HD/Ultra HD), Linear PCM
SIP Accounts: 8 per module