... ODM service, 3,Date/Fax/Voice MODEM. Description:Date/Fax/Voice MODEMFeatures:l 56kbps data/fax/voice external modeml Steady performancel ... , V.22 ITU T V.23, V.21l Fax Protocol:ITU-T V.17, V.29, V.27ter ... , and V.21 Channel 2l Fax Speed High to 14400bpsl Data correct: V.42 LAPM ... 42bis and MNP5l Protection circuit: internal arrester circuitl Modem on holdl Quick connectionl PCM UP streaml V.44 ...