OpenScape Business STLSX4R — 4-Port ISDN S0 (BRI) Trunk Card
4 × S0 (ISDN BRI) trunk card for X3R/X5R. Front-panel R-series card for terminating ISDN basic rate lines.
Specifications
- Tip / Type
- ISDN BRI trunk kartı / ISDN BRI trunk card
- Port
- 4 × S0 (2B+D)
- Platform
- OpenScape Business X3R / X5R (ön panel / front panel)
- Sistem tavanı / System ceiling
- 48 × S0 (X5R)
- Mitel PN
- 50009281
- Unify L No
- L30251-U600-A83
Key features
- 4 × S0 (ISDN BRI) ports.
- Platform: X3R / X5R — front-panel connection.
- X5R S0 ceiling: 48.
- Promark: ISDN line planning and commissioning.
Typical applications
Terminating existing ISDN BRI subscriptions at the PBX.
Phased ISDN-to-SIP migration periods.
Related Solutions
Related Products

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Details4 × S0 (ISDN BRI) trunk card for X3R/X5R. Front-panel R-series card for terminating ISDN basic rate lines.