# OpenScape Branch V11 — Branch Survivability and SBC Server

URL: https://www.promark.tr/en/products/openscape-branch
Category: PBX & UC
Family: [OpenScape Branch — Branch Survivability & SBC](https://www.promark.tr/en/products/openscape-branch-sbc)

SIP-based server that keeps voice running at remote branches — combines RFC 3261 Proxy/Registrar, Media Server, Voice Mail, Session Border Controller (SBC) and Branch SIP Trunking on a single platform. Scales to 6,000 registered lines, available as physical or virtual deployment.

## Key features

- Branch survivability: keeps full SIP voice service running locally when the WAN link to HQ goes down.
- RFC 3261 SIP Proxy + Registrar — registrar for SIP devices at the remote branch.
- Local Media Server — tones, announcements and conferencing; saves WAN bandwidth from central.
- Voice Mail integration — branch-side mailboxes that keep working without central reachability.
- Integrated Session Border Controller (SBC): stateful inspection firewall, NAT/PAT, VPN, protection.
- Branch SIP Trunking — direct ITSP connection on the branch side.
- 550 / 550 HA model: integrated PSTN Gateway + Analog Terminal Adapter (ATA).
- Six deployment scenarios: Proxy / Proxy ACD / SBC Proxy / Branch SBC / ATA / Gateway Only.
- Single network element management via Common Management Portal (CMP) — 'zero touch' maintenance.
- Scales to 6,000 registered user lines.
- Virtual appliance: hardware-independent VMware vSphere deployment for models without integrated gateway.

## Specifications

- **Type:** Branch survivability + SBC server
- **Version:** V11
- **Max registered users:** 6,000
- **Hardware models:** Standard appliance + 550 / 550 HA (PSTN GW + ATA included)
- **Virtual:** VMware vSphere (models without integrated GW)
- **SIP standard:** RFC 3261 fully compliant
- **Components:** SIP Proxy + Registrar + Media Server + Voice Mail + SBC + Branch SIP Trunking + (550: PSTN GW + ATA)
- **Deployment scenarios:** Proxy • Proxy ACD • SBC Proxy • Branch SBC • ATA • Gateway Only
- **SBC security:** Stateful inspection firewall, NAT/PAT, VPN, protection
- **Management:** Common Management Portal (CMP) — as a single network element

## Use cases

- Multi-branch holding offices — connected to central OS Voice via SIP, local voice continues if WAN drops.
- Hotel chain — branch guest rooms + reception SIP devices, external trunks via ITSP.
- Bank branch — critical customer calls don't drop during WAN outage (survivability).
- Hospital remote polyclinic — emergency line + central system integration.
- Dealer network — small locations with SBC-secured SIP, gateway-only mode for PSTN.

## For a quote and BOM

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