Yeastar S-Series PBX Dubai — S20 · S50 · S100 · S300 · S412 Modular PBX
The Yeastar S-Series is the UAE's most widely deployed modular PBX — S20, S50, S100, S300, and S412 — designed for UAE businesses that need a reliable, fully expandable on-premise phone system with analog (FXO), BRI, GSM/4G, and SIP trunk support. PBX Dubai is a Yeastar Authorized Gold Partner, supplying and supporting every S-Series model across all 7 UAE emirates.
Three Situations That Bring S-Series Customers to PBX Dubai
Most S-Series enquiries in the UAE fall into one of three scenarios. All three have clear solutions — and PBX Dubai handles all three as a Gold Partner.
Yeastar S-Series Support Dubai — AMC, Expansion & Engineer
Your S50, S100, or S300 is running but you need an engineer, an AMC contract, expansion modules (FXO, BRI, GSM), firmware updates, or a UAE-based support team who actually picks up the phone.
Buying a Yeastar S-Series PBX in Dubai — vs P-Series
You need a modular, fully expandable on-premise PBX with analog line support. You're weighing the S-Series proven reliability against the P-Series newer feature set — and want an honest recommendation without a sales pitch.
Yeastar S-Series Linkus App Dubai — LCS Pro Explained
Your S-Series is working fine but your team can't take office calls on their mobile. You've heard about the Linkus app but nobody has explained the LCS Pro licence clearly — what it costs, how it works on S-Series specifically.
Yeastar S-Series vs P-Series Dubai — Honest Comparison Guide
As Gold Partner for both product lines, PBX Dubai gives you a straight answer — not a push toward the higher-margin model. Here is exactly when each makes sense.
✅ Choose S-Series when…
- You have an existing S-Series system and want to expand modules, add users, or get LCS Pro mobile app — no disruption, no new hardware
- Your business has heavy analog line dependency — S-Series module slots give you up to 16 FXO ports across two expansion boards on the S100
- Budget is the primary driver — S-Series hardware is priced lower than equivalent P-Series and carries no per-user software fees
- You need GSM/3G/4G cellular trunk modules — S-Series supports up to 6 GSM antennas on the S100 for cellular backup or corporate SIM calling
- Your IT team manages the system internally — S-Series has a mature, well-documented interface with years of UAE deployment experience behind it
- You need a very small system (S20: 20 users, AED 840) without overspending on P-Series features you don't need yet
✅ Choose P-Series when…
- You need Linkus mobile app as a first-class feature — P-Series includes it free, no separate annual licence required
- Microsoft Teams integration is a requirement — P550/P560/P570 support native Teams Direct Routing
- Your business is CRM-heavy — Salesforce, HubSpot, Zoho screen-pop is built into P550 and above
- You are setting up a new system and want the current generation with the longest support life ahead
Yeastar LCS Pro Dubai — Linkus Mobile App for S-Series PBX
The Linkus mobile app on S-Series requires the Linkus Cloud Service Pro (LCS Pro) licence — a separate annual per-PBX subscription. Here is everything you need to know: what it does, what it costs, and how PBX Dubai installs it on your existing system.
Your S-Series staff can take office calls on their smartphones — with LCS Pro
LCS Pro enables the Linkus app on your existing S20, S50, S100, S300, or S412. Once installed, your staff answer and make calls from their Dubai +971 office number on any iPhone or Android — from home, from another emirate, or from any country in the world. The caller doesn't know they're not in the office.
📱 Important for S-Series owners: Unlike P-Series where Linkus is free and remote access needs Standard Plan or above, on S-Series the Linkus app itself requires LCS Pro — an annual per-PBX licence. It is not per user. One LCS Pro licence covers your entire system. PBX Dubai configures and activates LCS Pro as a complete service.
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5-Platform Linkus App — iOS, Android, Windows, macOS, Web
Every staff member gets the full Linkus app on their personal device. Make and receive calls, transfer, see colleague availability, access voicemail — all from their smartphone.
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Remote Access — No VPN Required
LCS Pro includes Yeastar's YRAS (Remote Access Service) — a secure encrypted cloud relay that works over any internet connection, including 4G/5G mobile data. Staff in Sharjah, Abu Dhabi, or abroad stay connected to your Dubai PBX automatically.
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Call Flip — Desk to Mobile Without Dropping
On a desk phone and need to leave? Transfer the live call to Linkus in one tap. The client hears nothing. Critical for staff who move between office and field.
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Zero International Call Costs for Remote Staff
Remote staff call colleagues as internal extensions — no IDD charges. A staff member in India calls a Dubai colleague for free via Linkus. Your monthly call bill doesn't change regardless of where your team works from.
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Works on 4G, 5G & WiFi — Not Just Office Network
LCS Pro keeps Linkus connected on mobile data. Staff at airports, client sites, or home offices stay fully reachable on the Dubai +971 number without any configuration on their end.
LCS Pro is a per-PBX annual licence — one fee covers all users on your system. Unlimited users use Linkus on all platforms. PBX Dubai activates, configures, and tests LCS Pro on your existing S-Series as a complete service. No VPN setup. No IT overhead. Works the same day.
Yeastar S20, S50, S100, S300 & S412 PBX Dubai — Choose Your Model
Four modular hardware models covering 20 to 300 users (expandable to 500 on S300). All support FXS, FXO, BRI, GSM, and SIP trunks via interchangeable module cards.
Yeastar S20 Dubai
- IVR, voicemail, call recording, call queues
- SIP trunk + analog PSTN line support
- LCS Pro mobile app — annual add-on
- Etisalat & du SIP trunk compatible
- Free lifetime firmware updates
Yeastar S50 Dubai
- 4 module slots — mix analog, BRI, and GSM
- 1U rack-mount chassis — server room ready
- LCS Pro Linkus app — AED 865/yr
- Auto-provisioning for IP phones
- Conference bridge, paging, call recording
Yeastar S100 Dubai
- 2 expansion boards × 4 module slots each = 8 total
- Up to 16 analog lines (FXO) across 4 modules
- Up to 6 GSM/3G/4G antennas across both boards
- E1/PRI via EX30 expansion board
- D30 module: +100 users, +30 concurrent calls
- LCS Pro mobile app — AED 1,298/yr
Yeastar S100 price Dubai — Gold Partner rate
Yeastar S300 Dubai
- 3 expansion boards × 4 module slots = 12 total
- Expandable to 500 users via 2× D30 modules
- 1U rack-mount — enterprise server room deployment
- Full E1/PRI support via EX30 boards
- LCS Pro mobile app — AED 2,163/yr
Yeastar S-Series Modular Design Dubai — FXO, BRI, GSM & E1 Modules
The Yeastar S-Series modular PBX Dubai design means you only pay for the trunk interfaces your business actually uses. No other on-premise PBX in the UAE market offers this level of hardware flexibility across five models — S20, S50, S100, S300, and S412. FXO analog lines, BRI ISDN, GSM cellular, or E1/PRI — all hot-swappable, all available from PBX Dubai UAE stock.
FXO Module — Analog PSTN Lines
Connect Etisalat or du analog landlines directly to your S-Series. Each FXO module adds 2 analog trunk ports. Up to 4 FXO modules per expansion board — 8 per S100, 12 per S300.
GSM / 4G LTE Module — Cellular Trunks
Insert UAE SIM cards directly into your PBX for GSM/3G/4G calling. Ideal for businesses with corporate SIM plans or locations where fixed-line broadband is unavailable. Also provides 4G failover if your SIP connection drops.
BRI Module — ISDN Digital Lines
Connect ISDN BRI lines (2 channels per module). Supports businesses with existing BRI ISDN infrastructure from Etisalat or du. Each BRI module adds 2 BRI ports (4 circuits).
EX30 Board — E1/PRI Digital Trunk
Each EX30 expansion board adds one E1/T1/PRI port for high-density digital trunk connectivity. Supports 30 channels per E1. Ideal for large call centres or offices with PRI lines from Etisalat.
D30 Module — User Expansion
Each D30 module adds 100 VoIP users and 30 concurrent calls to S100 or S300. S100 supports 1× D30 (200 users/60 calls total). S300 supports 2× D30 (500 users/120 calls total).
FXS Module — Analog Extensions
Connect analog handsets, fax machines, or elevator emergency phones directly to your S-Series via FXS modules. Each module adds 2 FXS extension ports. No IP phone required for these extensions.
Complete Yeastar S-Series Comparison — S20 vs S50 vs S100 vs S300
| Specification | S20 | S50 | S100 | S300 |
|---|---|---|---|---|
| Base Users | 20 | 50 | 100 | 300 |
| Max Users (expanded) | 20 | 50 | 200 | 500 |
| Base Concurrent Calls | 10 | 25 | 30 | 60 |
| Max Concurrent (expanded) | 10 | 25 | 60 | 120 |
| Module Slots (onboard) | 2 | 4 | 8 (via 2× EX08) | 12 (via 3× EX08) |
| Max Analog Lines (FXO) | 4 | 8 | 16 | 24 |
| Max GSM/4G Ports | 2 | 4 | 6 | 6 |
| E1/PRI Support | — | — | ✓ EX30 board | ✓ EX30 board |
| User Expansion (D30) | — | — | ✓ 1× D30 | ✓ 2× D30 |
| Linkus App | LCS Pro add-on | LCS Pro add-on | LCS Pro add-on | LCS Pro add-on |
| LCS Pro Annual Price | AED 512 | AED 865 | AED 1,298 | AED 2,163 |
| Teams Integration | — | — | — | — |
| CRM Integration | — | — | — | — |
| Rack Mount | Desktop | ✓ 1U | ✓ 1U | ✓ 1U |
| Hardware Price (from) | AED 840 | AED 1,601 | AED 2,368 | ~AED 4,500 |
Need Teams integration or built-in CRM? Yeastar P-Series → · For Software Edition: Yeastar Software PBX →
Yeastar S-Series vs P-Series — Full Honest Comparison
PBX Dubai supplies and supports both product lines. This comparison helps you make the right decision — not the most expensive one.
Yeastar S-Series Support & AMC Dubai — UAE Gold Partner
PBX Dubai provides the full range of S-Series support services across all 7 UAE emirates — from emergency fault calls to planned expansion, firmware management, and annual maintenance contracts.
🔧 Yeastar S-Series Support UAE — Technical Services
- Emergency fault response — Gold Partner access to Yeastar Level 2 & 3 engineers for escalation of critical faults
- Remote diagnosis & fix — most S-Series issues resolved remotely within hours via secure admin access
- Firmware updates — we manage Yeastar firmware releases, test in our lab, and apply to your system in a scheduled maintenance window
- SIP trunk reconfiguration — Etisalat or du SIP trunk changes, dial plan updates, and failover configuration
- Linkus / LCS Pro setup — complete activation, testing, and staff onboarding for all Linkus platforms
- Module installation — FXO, BRI, GSM, EX08, EX30 expansion modules supplied and installed UAE-wide
📋 Yeastar S-Series AMC Dubai — Annual Maintenance Contract
- Priority fault response SLA — AMC customers go to the front of the queue. Business-critical issues get same-day attention.
- Quarterly preventive visits — scheduled on-site health checks: system logs, call quality, module status, capacity review
- Firmware lifecycle management — we track Yeastar releases and update your system proactively — you don't need to monitor it
- Configuration backup — encrypted off-site backup of your full S-Series configuration taken monthly
- LCS Pro renewal management — we remind you before expiry and handle renewal so your Linkus app never drops offline
- User additions & changes — new extensions, IVR changes, ring group updates covered under AMC at no extra call-out charge
Need S-Series Support or AMC Today?
Call or WhatsApp — our UAE-based engineers respond the same business day. All 7 emirates covered at the same price.
Upgrading from S-Series to P-Series — Zero Disruption
When the time comes to move from your S-Series to P-Series, PBX Dubai manages the complete migration. Your team never experiences a missed call during the transition.
Step 1 — New Yeastar PBX Installed Alongside S-Series Dubai
We install the new Yeastar P-Series hardware alongside your existing S-Series. Both connect to your SIP trunks and analog lines simultaneously. Your S-Series stays fully live — nothing changes for your team during setup.
Step 2 — S-Series to P-Series Migration UAE
Extensions, IVR structure, ring groups, voicemail, and Linkus configurations are all recreated on the P-Series before any cutover. We migrate one department at a time — typically overnight or on weekends. Staff receive Linkus app setup before their department switches.
Step 3 — S-Series Decommissioned, P-Series Fully Live
Once every extension is confirmed live on P-Series — typically 1–3 days from start — we decommission the S-Series. All your UAE numbers, DDIs, and SIP trunks are preserved. Your team is now on P-Series with Linkus included from day one.
Our Upgrade Promise
PBX Dubai has completed S-Series to P-Series migrations across Dubai, Abu Dhabi, and Sharjah. Every migration: all existing UAE numbers retained, all Etisalat/du SIP trunks preserved, zero missed calls during the transition window. If we estimate your migration will take longer than 3 days, we tell you upfront — before any contract is signed.
Yeastar S-Series Dubai — Frequently Asked Questions
Your S-Series. Fully Supported. Right Now.
Whether you need a new system, an expansion module, LCS Pro for mobile, or urgent support — PBX Dubai responds the same business day. All 7 emirates. Gold Partner pricing.