# OpenScape 4000 STMIY — 120-channel Common Gateway Board

URL: https://www.promark.tr/en/products/stmiy
Category: Expansion Cards & Modules
Family: [OpenScape 4000 Cards](https://www.promark.tr/en/products/openscape-4000-cards)

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.

## Key features

- 120-channel capacity (three 30+30-line combinations).
- Order number / part: Q2361-X.
- Successor to STMIX (Q2360-X) and STMI4 (with PDMX module) — live migration on V11.
- Mini USB 2.0 device port — for the SERVICE console terminal.
- Two USB 3.0 Type A host ports — for maintenance purposes.
- Access to the LTU shelf's 4 standard PCM highways or the 4 additional highways of the extended (Wideband) LTU shelf.
- Central placement on AP3700 shelf (with LTUCR).
- SIP load-balancer service available together with OpenScape 4000 SoftGate (SoftGate-side activation).
- Hot-pluggable: removal/replacement procedure documented in §6.9.5.

## Specifications

- **Type:** Common Gateway board
- **Channels:** 120
- **Order number / Part:** Q2361-X
- **Replaces:** STMIX (Q2360-X), STMI4 + PDMX
- **Service ports:** 1 × Mini USB 2.0 device (SERVICE console) + 2 × USB 3.0 Type A host (maintenance)
- **PCM highway:** 4 standard + 4 extended (Wideband LTU)
- **Placement:** AP3700 shelf — central (with LTUCR)
- **OS4K version:** V11
- **Hot-plug / field-replaceable:** Yes (§6.9.5)
- **SIP load balancer:** Active together with OpenScape 4000 SoftGate

## Use cases

- Existing STMIX infrastructure upgrade — increased channel capacity by replacing STMI4 / old STMIX with STMIY on V10/V11.
- High-traffic enterprise PBX — 120-channel modern gateway, unified IP-TDM operation with OS 4000 SoftGate.
- OS 4000 V11 greenfield install — fundamental common-gateway card.
- Multi-shelf configuration — 4 extra PCM highways via Wideband LTU shelf.
- Service / maintenance team — modern USB SERVICE console speeds up field intervention.

## For a quote and BOM

https://www.promark.tr/en/contact · +90 312 544 0915 · destek@promark.tr