Patton electronic 4520 Voice connectivity, Connectivity, Voice processing signalling dependent

Model 4520 & 4110 Series Getting Started Guide A • Specifications

DSP

One or two 4-channel DSPs

Voice connectivity

2-wire Loopstart, RJ-11/12 Short haul loop 1.1 km @3REN EuroPOTS (ETSI EG201 188)

Programmable AC impedance, feeding, and ring voltage; On-Hook Voltage 29VDC

Caller-ID Type-1/2 FSK and ITU V.23/Bell 202 generation

Connectivity

2 10/100 Full Duplex/Autosensing Ethernet RJ-45

Voice processing (signalling dependent)

Voice codes:

•G.711 A-Law/µ-Law (64 kbps)

•G.726 (ADPCM 40, 32, 24, 16 kpbs)

•G.723.1 (5.3 or 6.3 kbps)

•G.729ab (8 kbps)

•Transparent pass through

G.168 echo cancellation

8 parallel voice connections DTMF detection and generation Carrier tone detection and generation Silence suppression and comfort noise Configurable dejitter buffer Configurable tones (dial, ringing, busy) Configurable transmit packet length RTP/RTCP (RFC 1889)

Fax and modem support

G.711 transparent FAX

Fax over IP (FoIP)

T.38 Fax relay (9.6 k, 14.4 k)

DSP 65