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).

Specifications
- Tip / Type
- Digital Interface Unit Trunk (3rd gen)
- Yerini aldığı / Replaces
- DIUT2 (DIUN2 + DIU2U birleşimi)
- Loadware varyantları / LW variants
- E1 (ISDN & CAS) veya T1 (BOS & MOS/CVN)
- PCM highway erişimi / PCM highways
- 4 standart + 4 extended (Wideband LTU)
- Optik backplane / Optical backplane
- Desteklenmez
- Yapılandırma komutu / Config command
- AMO BCSU
- Yerleşim / Placement
- LTU shelf (peripheral)
- Hot-plug
- Evet
- OpenScape 4000 sürümü / OS4K version
- V11
Key features
- DIUT 3rd gen — unifies DIUN2 (Q2196) and DIU2U (Q2216) technology on a single PCB; DIUT3 brings the V11 refinement.
- Two LW variants: E1 (ISDN PRI / CAS) or T1 (BOS / MOS / CVN) — region-specific configuration.
- Access to the LTU shelf's 4 standard PCM highways.
- Support for the 4 additional highways of the extended (Wideband) LTU shelf.
- Optical backplane interface NOT supported (per §6.1.1 doc note).
- Configured via the AMO BCSU command (§6.1.5).
- LED indication: power, sync, trunk level, fault.
- Hot-pluggable: removal/replacement in §6.1.6/6.1.7.
Typical applications
European ISDN PRI termination — 30-channel PRI on E1 LW.
North American T1 — 24-channel BOS / MOS / CVN on T1 LW.
DIUT2 refresh — V11 migration via DIUT3 for redundancy and capacity.
Multi-country trunk config — same PCB, two LW variants for regional adaptation.
Protect existing PRI investment — phased migration to IP, DIUT3 extends lifecycle.
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DetailsDigital 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).