NEC SL1100 BE116496 SL2100 CPU CARD (8) VoIP channels (4) ports of InMail/VRS with (2) InMail storage hours (4) Mobile Extension ClientsTelephony Resources for DTMF, Dial Tone/Busy Tone detection, and FSK Caller ID receiver/senderTone Sender for system tones and
DTMFConference ResourcesContains: Ethernet port (RJ45) Connector for VoIP Daughter Board (VOIPDB) required for additional VoIP channels (up to system max of 128) Connector for Expansion Card (EXIFB) Connector for SD card (for additional InMail storage) Slot for memory backup battery (CR2032, included)Installs in dedicated CPU/EXFE slot in Main Chassis