STARK SGS10-DWD Can Operate in either analog or digital mode Support various voice call types, IP data/defined data messages, various analog signaling, Providing higher function expansion Capacity Customer can upgrade SGS10-DWD software to Tier-III without buying new devices GPS positioning information and sending of GPS text message Support smooth roaming with in IP multi-site connect system Secure communication with analog/digital voice encryption For more information visit us at www.antrikshtechnosys.com