How to choose a phone system for your MSP.
A phone system for an MSP has to do more than ring phones. It has to tie every call to a ticket, manage many clients from one place, and fit how you bill and support.
What makes a phone system right for an MSP?
A generic business phone system is built around one company's phones. An MSP supports many companies, tracks every interaction in a PSA, and bills for time. The right phone system for an MSP therefore needs native PSA integration, multi-tenant management, and a commercial model that fits a channel business.
Use the eight criteria below to evaluate any option. Each one includes how 1Stream, a cloud phone system sold only through MSPs, handles it.
What to look for, and how 1Stream does it.
Ask every vendor the same eight questions.
1. PSA integration depth
Look for native, two-way integration that creates tickets and logs time, not just a screen pop. 1Stream integrates natively with ConnectWise PSA, Autotask, HaloPSA, Kaseya BMS, Syncro, SuperOps, and more, in real time with no middleware.
2. Tickets created from calls
Look for automatic ticket creation and call documentation. 1Stream's AI creates the ticket, then posts the summary, transcript, time entry, and recording to it when the call ends.
3. Multi-tenant management
You manage many clients, so you need one portal for all of them. 1Stream's control portal handles every client's system, extensions, call flows, and integrations.
4. Microsoft Teams
If clients live in Teams, check direct routing and feature depth. 1Stream offers Teams direct routing plus full UCaaS and CCaaS capabilities inside the Teams client.
5. After-hours coverage
Ask how urgent calls reach your on-call team. 1Stream's AI Attendant answers during and after hours, and Signal On-Call covers after-hours escalation.
6. Compliance
Healthcare and regulated clients need it built in. 1Stream supports HIPAA with BAAs, e911, Kari's Law, RAY BAUM's Act, and 10DLC.
7. Hardware and migration
Check phone support and cutover. Any open SIP phone works with 1Stream, number porting is included, and you can run it alongside your current system during transition.
8. Commercial model
Look at who the vendor sells to and how it prices. 1Stream is channel-only, priced per user per role, month to month with no annual lock-in.
Questions to ask any phone vendor.
- Does the integration create tickets, or only pop a screen? Ask to see a call become a ticket in your PSA.
- Is the sync real time and two-way? Nightly syncs leave techs working from stale contacts.
- Who answers when you call support? Ask whether MSP-experienced engineers answer your tickets.
- How do you manage 50 clients? Ask to see the multi-tenant portal, not a single-company admin screen.
- What happens after hours? Ask how an urgent call reaches the right person at 2 a.m.
- What does the contract look like? Check lock-ins, minimums, and per-seat versus per-role pricing.
- Does the vendor also sell to your clients directly? Ask whether it is channel-only.
Phone system for MSPs: common questions
What is the best phone system for an MSP?
The best fit depends on your PSA and support model, but look for native two-way PSA integration, tickets created from calls, multi-tenant management, and a channel-friendly commercial model. 1Stream is a cloud phone system sold only through MSPs, with native integrations to ConnectWise PSA, Autotask, HaloPSA, Kaseya BMS, Syncro, SuperOps, and more.
Does 1Stream work with my PSA?
1Stream has native, bidirectional integrations with all major MSP PSAs, plus 200+ other MSP tools across RMM, CRM, documentation, and ticketing. Integrations are real time and require no middleware.
Can I keep my existing phones and numbers?
Any open SIP phone works, including Yealink, Polycom, Cisco, Grandstream, and Snom. Number porting is included, and you can run 1Stream alongside your current system during a transition.
Does it support Microsoft Teams?
Yes. 1Stream provides Microsoft Teams direct routing plus full UCaaS and CCaaS capabilities inside the Teams client, including the AI agents and PSA integration.
How is it priced?
Plans are priced per user, per role, month to month, with no annual lock-in. You can mix plans across a client's team.
Does 1Stream sell directly to my clients?
No. 1Stream is channel-only, sold through MSP partners, with no direct sales team. End-client inquiries are routed to a partner.
See it on your PSA.
Book a 20-minute demo and watch a call become a ticket in your own stack.