ATA186-I2-A, 270 ohm in series with 750 ohm and 150 NF in parallel
Cisco ATA186-I2-A, G.723.1, G.729, G.729A, SIP (RFC 2543), SCCP, 10Base-T
Cisco ATA186-I2-A. Voice codecs: G.723.1, G.729, G.729A. VoIP protocols: SIP (RFC 2543), SCCP, Supported network protocols: 10Base-T