Expansion Cards & Modules
PBX expansion cards, ISDN/analog/digital port modules.
4 solution families · 8 individual products
Solution Families
OpenScape 4000
System, card, license and accessory part numbers for OpenScape 4000 V11. EcoServer 2 Simplex/Duplex, HG3500 V8 (IP Gateway), SLMU, SLMAV24, DIUT3, TMANI. Flex User licenses (L30220-G622) and SSP 3Y annual maintenance (K40220-G622).
- L30220-Y600-G300 — OpenScape/HiPath 4000 Basic System: base system unit
- L30220-Y600-G335 — OpenScape EcoServer 2 Simplex: single-server software platform — standard deployment
- L30220-Y600-G336 — OpenScape EcoServer 2 Duplex: dual-server high-availability platform — redundant/HA deployment

OpenScape Business X8
Hardware, card, license and accessory part numbers for OpenScape Business X8. System box, OCCLA mainboard, expansion cards (DIUT3, TMANI, SLMU, SLMAV24N, OCCBL, ALUM/PFT), installation materials and user licenses.
- L30251-U600-G661 — OSBiz X8 System Box: stackable chassis, 2× LUNA2 PSU included, 9 peripheral card slots + 1 extra LUNA2 slot (no power cord)
- L30251-U600-G664 — Mainboard OCCLA: M.2 SATA SSD-based, 2× GigE LAN (customer + service), 1× GigE WAN, 1× USB 2.0, 2× USB 3.0, M.2 NVMe slot, OCCB connector, 3.5mm MoH jack — SW must be ordered separately (alternative: L30251-U600-G662 OCCL V2 — SDHC-based)
- L30251-U600-A989 — DIUT3 (ISDN S2M): E1/T1 PRI trunk card, 2× E1 / 30 ch each — max 3 per X8 = 180 PRI channels; PSTN ISDN PRI operator line connection
OpenScape Business X3R/X5R Cards
Subscriber and trunk cards for X3R and X5R rack PBXs — analog (SLAV16R/SLAV8R), digital UP0/E (SLU8NR), analog trunk (TLANI4R) and ISDN S0 (STLSX4R). Front-panel R-series; not interchangeable with X8 cards — the two platforms use separate card families.
- SLAV16R — 16-port analog subscriber (CLIP), SLAD16 successor; max 4 per system; RJ45 Y-cable mandatory
- SLAV8R — 8-port analog subscriber; SLU8NR — 8 × UP0/E digital subscriber (X5R ceiling 56)
- TLANI4R — 4-port analog trunk; STLSX4R — 4 × S0 ISDN BRI trunk (X5R ceiling 48)

OpenScape Business X8 Cards
Mainboard, DSP, subscriber and trunk cards of the modular X8 PBX — OCCLA (V3 mainboard), OCCBL/OCCBH DSP boosters, SLMAV24N analog, SLMU digital (SLMO successor), SLMUC DECT (SLCN successor), DIUT3 PRI, TMANI analog trunk (w/o metering) and REALS PFT. ⚠️ X8 cards do not fit X3R/X5R or OS4000 — identically named cards are different parts.
- OCCLA — V3 mainboard (8 onboard DSP); OCCBL +40 / OCCBH +120 DSP boosters
- SLMAV24N — 24-port analog subscriber (CLIP); SLMU — 24 × UP0/E digital subscriber (SLMO8N/24N successor — SLMO no longer sold)
- SLMUC = SLMU + CMAe — DECT base station card (SLCN successor); max 4/system, 128 DECT devices per card
Individual Products

OpenScape 4000 DIUT3 — Digital Interface Unit Trunk Card
Digital interface board terminating external trunk connections on OpenScape 4000 — V11-era successor to DIUT2. Single PCB supports two loadware variants: E1 (ISDN PRI / CAS) and T1 (BOS / MOS / CVN).

OpenScape 4000 SLMAV — 24-port Analog Subscriber Line Card
24-port T/R analog subscriber card for OpenScape 4000 — same feature set as SLMAE, supports CLIP and includes an internal 71 Vrms ring voltage generator (no external ringer needed). 1800 Ω loop drives a standard 600 Ω phone up to 4.5 km cable distance.

OpenScape 4000 SLMC — DECT Cordless Base Station Line Card
Card providing 24 UP0/E lines for DECT cordless base stations on OpenScape 4000 — successor to SLC24. 48 ADPCM channels per board, cable distance up to 1000 m (ICCS).

OpenScape 4000 SLMU — 24-port UP0/E Subscriber Line Card
24-port UP0/E card for OpenScape 4000 digital subscriber lines — successor to the SLMO and SLMOP boards. 2B+D ISDN Basic Rate interface, up to 1000 m cable length (ICCS).

OpenScape 4000 STMD3a — ISDN S0 Station/Trunk Module (Variant A)
Variant A of the STMD3 board, combining STMD and SLMS functions on one card. 8 S0 trunk interfaces (each 2B+D); function-equivalent to STMD2 with new hardware. SIPAC backplane connector, on-board flash protection.
OpenScape 4000 STMIX — HG 3500 Common Gateway Card
Common Gateway HG 3500 card that adds 120-channel SIP/IP trunk capacity to OpenScape 4000 — designed to migrate operator connectivity from TDM to IP, with hot-plug support.

OpenScape 4000 STMIY — 120-channel Common Gateway Board
120-channel common gateway board for OpenScape 4000 — successor to STMIX and STMI4 (with PDMX module). High line density, modern USB service ports and LTU shelf integration.

OpenScape 4000 TMANI — 8-port Analog Trunk Board
8-port analog trunk board for OpenScape 4000 — successor to TM2LP and TMC16. Supports HKZ Loop Start (worldwide) and country protocols such as DID Italy. Same layout/dimensions as the HiPath 3800 board, only the part number and LW differ.