- Insertion Loss @ 1004Hz : 0.5 dB Max. - Attenuation Distortion @ 0.2~3.4KHz : ±1.0 dB Max. - Attenuation Distortion @ 3.4~4.0KHz : ±1.5 dB Max. - Delay Distortion @ 0.6~3.4KHz : 200us Max. - Delay Distortion @ 0.2~4.0KHz : 250us Max. - Return Loss @ 0.2~4.0KHz : 20 dB Min. - Longitudinal Balance @ 0.2~1.0KHz : 58.0 dB Min. - Longitudinal Balance @ 1.0~3.0KHz : 53.0 dB Min. - Attenuation @ 30~300KHz : 55.0 dB Min. (Input Level 10dBm) - Attenuation @ 300~1104KHz : 55.0 dB Min. (Input Level 10dBm) - DC Resistance Between TIP-RING : 25 ohm Max. - Insulation Resistance Between TIP-RING : 5M ohm Min. - ANSI AnnexE, KT Standard.