PLEASE LIKE & SUBSCRIBE My Channel before Downloading the software Link.All SL Series phones are compatible each other.But, SL1000 system should be in latest. One NEC SL2100 1-Port 3rd-Party SIP Station License is required for each 3rd-Party SIP telephone. Not required for SL2100 IP telephones or ML440 handsets. Model: SL2100 IP Ext-01 Lic. Requires VOIP channel (8 are built into the CPU). Additional VoIP channels can be added with the VoIP Daughter Board (BE116500) & appropriate quantity of VoIP. Current Description. Aspire-derived NEC PBXes operating InMail software, including all versions of SV8100, SV9100, SL1100 and SL2100 devices allow unauthenticated read-only access to voicemails, greetings, and voice response system content through a system's WebPro administration interface. View Analysis Description. Download the NEC SL2100 PCpro programming software 0 or higher contain the possibility if incorrectly configured to allow a blank username and password combination to be entered as a valid, successfully authenticating account NEC PABX TRAINING NEC SV9100 Handset FaxCONNECTit: Part 2 - Fax ATA Installation and Sending a Fax NEC SL 1000 PABX. What is Nec Sl2100 Firmware. VoIP NEC I-SIP Multi-Line Telephone for SL2100; Supports Ethernet Gigabit Speed (Full Duplex) 8 Programmable Keys Visible at a Time (May Scroll Up to 32). NEC SL2100 PC Pro is the software needed to connect to the SL2100 phone system and make programming changes. NEC SV9100 and SL2100 InReports Overview.