Yeastar P-Series in Morocco: which model (P520, P550, P560, P570) and which edition to choose

The short answer: you choose a Yeastar P-Series on two vendor-published figures, the number of users and the number of concurrent calls, then on the ports you need to keep your analogue lines, and finally on the feature plan. The P520 covers a small organisation of 20 users, the P550 an SMB of up to 50, the P560 a company of 100 to 200, and the P570 a head office of 300 to 500. The plan decides whether you get a call centre, CRM integrations or video conferencing. As a Yeastar certified partner in Casablanca, here is our selection grid, the available editions and the mistakes we see on quotes.

The four P-Series models, vendor figures

For each appliance, Yeastar publishes a base capacity and a maximum capacity after expansion. These are the values shown on the official Appliance Edition page.

Model	Users (base / max)	Concurrent calls (base / max)	Max FXS	Max FXO/BRI	Max 3G/4G	Max E1/T1
P520	20	10	4	4	1	–
P550	50	25	8	8	4	–
P560	100 / 200	30 / 60	8	8	4	1
P570	300 / 500	60 / 120	16	16	6	2

Three things to remember. The P520 and P550 have a fixed capacity: go beyond 50 users and you need a new box. The P560 and P570 expand with DSP modules: each module adds 100 users and 30 concurrent calls, with at most one module on the P560 and two on the P570. Finally, Yeastar states that the P520 supports neither the APIs nor hotel PMS integration, and that its availability depends on each region’s sales policy: we check it before proposing it.

Which model for which company profile

The capacities above are ceilings. The right model covers your users and your peak-hour concurrent calls, with headroom for the growth expected over the life of the box.

Profile	Model we look at first	Why
Professional firm, branch, small shop, up to 20 extensions	P520	Compact; a few analogue lines or a 4G backup are enough
SMB of 20 to 50 extensions, reception and a few queues	P550	Up to 8 FXO/BRI ports and 4 3G/4G ports
Company of 50 to 200 extensions, clinic, school	P560	Expandable with a DSP module, one E1 port possible
Multi-department head office, hotel, industrial site up to 500 extensions	P570	Up to 16 FXO/BRI, 16 FXS and 2 E1, two expansion boards

Concurrent calls are often the real criterion. A 30-person contact centre can saturate the 25 calls of a P550, while a 45-person administrative office will never come close. To estimate it, we start from real data: logs from the old PBX, carrier statements, number of busy lines at the daily peaks.

Keeping analogue lines: modules and expansion boards

This is Yeastar’s historical advantage over a purely software phone system: the appliance connects existing lines and equipment directly through plug-in modules.

• O2: 2 FXO ports to connect 2 analogue carrier lines.
• S2: 2 FXS ports for 2 analogue phones, a fax or a door station.
• SO: 1 FXS and 1 FXO, handy for analogue-line fallback.
• B2: 2 BRI ports (ISDN basic rate).
• 3G module: 1 channel for voice calls over a SIM card; the 4G LTE module provides cellular data.

To go beyond the built-in slots, the P560 accepts one expansion board and the P570 two. The EX08 board has 4 module slots and 8 interfaces on the panel; the EX30 has one E1/T1/PRI port. In practice, a clinic that keeps its reception analogue lines, a few analogue phones in patient rooms and a fax connects without any external gateway.

If your lines are to move to a SIP trunk later, plan the transition from the start, as we explain in SIP trunk: keeping your business numbers. The appliance can run both side by side during the migration.

Appliance, Software or Cloud: the three editions

The same P-Series software comes in three forms.

Edition	Where it runs	For whom
Appliance	P520 to P570 box on your premises	Sites with analogue lines, desk phones, a need to work on site
Software	Your server or cloud: VMware, Hyper-V, KVM, Proxmox, or public cloud providers	Companies with existing virtualised infrastructure; Yeastar states up to 10,000 users and 1,000 concurrent calls
Cloud	Hosted by Yeastar, or on your own infrastructure	Distributed teams, remote work, no telephony hardware to maintain

Two nuances weigh on the choice. AI features such as the AI Receptionist and call transcription are only offered on the Software and Cloud editions, with an additional per-minute subscription. Conversely, direct connection of analogue lines exists only on the appliance. High availability (Hot Standby) is possible on the appliance and the software, with a second redundancy server.

Feature plans: Basic, Standard, Enterprise, Ultimate

The appliance ships with a free Basic Plan covering basic telephony. Advanced features are enabled by subscription, annual or monthly.

Plan	Editions	What it adds
Standard	Appliance only	Full telephony (IVR, queues, recording, forwarding), Linkus apps, operator panel, team chat, secure remote access
Enterprise	Appliance, Software, Cloud	Plus: inbound call centre (wallboard, queue panel, callback), omnichannel messaging (WhatsApp, SMS, web chat, Facebook), CRM, helpdesk and Microsoft 365 integrations, remote SIP registration, remote archiving
Ultimate	Appliance, Software, Cloud	Plus: video calls and conferencing, Call Flow Designer, Message Flow Designer, Active Directory integration, Linkus SDK

For a professional firm or an SMB that wants a reliable phone system and mobile apps, the Standard Plan is often enough. As soon as a reception desk runs supervised queues, or calls must flow into a CRM such as Odoo, HubSpot or Zoho, aim for Enterprise. We cover reception design in queues, IVR and statistics. Note that the Cloud Edition hosted by Yeastar requires at least an Enterprise Plan, and remote archiving there requires the Ultimate Plan.

Linkus: the extension that follows your staff

Linkus is Yeastar’s unified communications app, available as a web client, a Windows and macOS desktop app, an iOS and Android mobile app, and a Google Chrome extension. It gives each user their extension, voicemail, team chat and call history, and lets them flip a call from one device to another. On the appliance, remote access goes through Yeastar’s Remote Access Service, which avoids exposing the PBX to the internet through port forwarding.

The mistakes we fix most often

1. Choosing on headcount without counting peak-hour concurrent calls.
2. Buying a P550 for a growing company: its capacity does not expand, so the box will have to be replaced.
3. Forgetting analogue equipment: fax, door station, alarm or lift connected to a line, discovered on cut-over day.
4. Buying the box without the right plan: a reception desk with supervised queues or a CRM integration does not work with the Standard Plan alone.
5. Expecting AI on the appliance: the AI Receptionist and call transcription belong to the Software and Cloud editions.
6. Neglecting the network: PoE switches, voice VLAN and quality of service make call quality, see the 10 mistakes that ruin call quality.

Checklist before ordering

• Number of users today and expected over the life of the box.
• Peak-hour concurrent calls, measured on the existing system.
• Analogue, BRI or E1 lines to keep, and the timeline for moving to a SIP trunk.
• Analogue equipment inventoried: phones, fax, door stations, alarms.
• Need for a 3G/4G backup.
• Edition chosen: Appliance, Software or Cloud.
• Plan chosen by usage: telephony, call centre, CRM, video.
• Remote workers and sales staff equipped with Linkus.
• Network checked: PoE, voice VLAN, firewall, internet link.

How we do it

We start with an audit of what exists: lines, numbers, handsets, connected equipment, call logs and network. We then compare editions and plans on your real case, and if 3CX or another solution fits better, we say so, as in our 3CX, Yeastar or Teams Phone comparison. Next come a pilot with a few users, the configuration (IVR, queues, ring groups, recording, Linkus), a staged migration with rollback, then 24/7 monitoring of the phone system within our IP telephony offering. For the big picture, read our business IP phone system guide for Morocco, and see our projects in our case studies.

Torn between two models or two plans? The initial audit is free: contact us and we will reply within 24 business hours with a model, edition and plan recommendation based on your real usage.