... Channels), 2E1 (60 Channels), 4E1 (120 Channels)1T1 (24 Channels), 2T1 (48 Channels), 4T1 (96 Channels)· Voice ... 1, GSM, iLBCEcho Cancellation: G.168, tail length: 8/16/32/64/128 millisecondsDynamic Jitter buffer, Voice Activity Detector ... Flash Memory64 MB· Central ProcessorMotorola PowerPC 8250· Digital Signal ProcessorTI C5509· Input Voltage110~220V/6A AC, 50~60Hz ... x 44 x 44 cm, 1U, 19 formfactor