Kamailio SIP Server vs. Zoom Phone

Overview
ProductRatingMost Used ByProduct SummaryStarting Price
Kamailio SIP Server
Score 9.0 out of 10
N/A
The Kamailio SIP Server, formerly known as OpenSER or SER, is an open source VoIP and communications platform.N/A
Zoom Phone
Score 8.7 out of 10
N/A
Built on Zoom's platform, Zoom's cloud phone consolidates business communication and collaboration into a single system. Available in 40+ countries, with expandable coverage through a bring-your-own-carrier offering, Zoom Phone supports inbound and outbound calling through the public switched telephone network (PSTN). Features: Post call summary & next steps A post-call summary from Zoom’s AI Companion keeps the focus on the conversation instead of…
$10
per month per user
Pricing
Kamailio SIP ServerZoom Phone
Editions & Modules
No answers on this topic
US & Canada Metered
$10
per month per user
US & Canada Unlimited
$15
per month per user
Global Select
$20
per month per user
Offerings
Pricing Offerings
Kamailio SIP ServerZoom Phone
Free Trial
NoNo
Free/Freemium Version
NoNo
Premium Consulting/Integration Services
NoNo
Entry-level Setup FeeNo setup feeNo setup fee
Additional DetailsNo fees for emergency 911 Service No fees for compliance and administrative cost recovery Fee No 10DLC SMS fees
More Pricing Information
Community Pulse
Kamailio SIP ServerZoom Phone
Features
Kamailio SIP ServerZoom Phone
Cloud PBX
Comparison of Cloud PBX features of Product A and Product B
Kamailio SIP Server
8.0
1 Ratings
0% below category average
Zoom Phone
9.4
43 Ratings
16% above category average
Hosted PBX8.01 Ratings9.820 Ratings
Multi-level Interactive Voice Response (IVR)9.01 Ratings9.526 Ratings
User templates7.01 Ratings9.317 Ratings
Call reports8.01 Ratings9.421 Ratings
Directory of employee names8.01 Ratings9.138 Ratings
Call Management
Comparison of Call Management features of Product A and Product B
Kamailio SIP Server
8.4
1 Ratings
0% above category average
Zoom Phone
9.1
42 Ratings
8% above category average
Answering rules9.01 Ratings9.739 Ratings
Call recording8.01 Ratings9.840 Ratings
Call park9.01 Ratings9.732 Ratings
Call screening8.01 Ratings9.731 Ratings
Message alerts8.01 Ratings9.537 Ratings
VoIP system collaboration
Comparison of VoIP system collaboration features of Product A and Product B
Kamailio SIP Server
7.5
1 Ratings
6% below category average
Zoom Phone
9.6
22 Ratings
18% above category average
Video conferencing7.01 Ratings9.521 Ratings
Audio conferencing8.01 Ratings9.521 Ratings
Video screen sharing7.01 Ratings9.721 Ratings
Instant messaging8.01 Ratings9.718 Ratings
Mobile apps
Comparison of Mobile apps features of Product A and Product B
Kamailio SIP Server
-
Ratings
Zoom Phone
9.7
41 Ratings
19% above category average
Mobile app for iOS00 Ratings9.736 Ratings
Mobile app for Android00 Ratings9.827 Ratings
Best Alternatives
Kamailio SIP ServerZoom Phone
Small Businesses
CloudTalk
CloudTalk
Score 7.6 out of 10
CloudTalk
CloudTalk
Score 7.6 out of 10
Medium-sized Companies
CloudTalk
CloudTalk
Score 7.6 out of 10
CloudTalk
CloudTalk
Score 7.6 out of 10
Enterprises
Cisco Unified Communications Manager (Call Manager)
Cisco Unified Communications Manager (Call Manager)
Score 8.9 out of 10
Cisco Unified Communications Manager (Call Manager)
Cisco Unified Communications Manager (Call Manager)
Score 8.9 out of 10
All AlternativesView all alternativesView all alternatives
User Ratings
Kamailio SIP ServerZoom Phone
Likelihood to Recommend
9.0
(1 ratings)
9.2
(46 ratings)
Likelihood to Renew
-
(0 ratings)
10.0
(1 ratings)
Usability
-
(0 ratings)
7.3
(2 ratings)
Support Rating
-
(0 ratings)
6.6
(4 ratings)
User Testimonials
Kamailio SIP ServerZoom Phone
Likelihood to Recommend
Open Source
Kamailio SIP Server is very well suited if you want to secure your main servers; it can perfectly act as a proxy server and a gateway to your main server. It also does load balancing and call transfers easily based on the configurations done.
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Zoom
I think it works well for offices that have multiple locations. Being able to give each person and office their own extension makes it easier for colleagues to connect with each other, plus it's a costs savings for each of the offices
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Pros
Open Source
  • Proxy server.
  • Security Firewall.
  • SIP to PSTN gateway.
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Zoom
  • Having our Phone system all in onc place. Call, Text, Voicemail. with live transcript
  • Zoom Meeting AI companion - taking notes, creating action items, and summarizing the meetings then email immediately afterwards
  • Scheduler - being able to send links to team members or vendors to book a time that works best for them that is linked and synced to my calendar.
Read full review
Cons
Open Source
  • Interportability
  • SIP conversions.
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Zoom
  • We needed to link each of our team members' personal emails to the Zoom account so we have to filter VM notifications out of our personal accounts.
  • It'd be nice if you could set business hours through the webpage to include a lunch break so that you don't have to manually go in to edit.
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Likelihood to Renew
Open Source
No answers on this topic
Zoom
Integrated into our network. System wide access. Staff are comfortable with the product
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Usability
Open Source
No answers on this topic
Zoom
Zoom Phone has a very sleek design which makes it very easy to operate and use both in the setting up of and interacting in a meeting space. That being said, certain features can seem a bit crowded while trying to screen share or display video which somewhat defeats the purpose of the application as compared to a standard conference call.
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Support Rating
Open Source
No answers on this topic
Zoom
I haven't had any sort of issues with Zoom as of yet to have to call Support. That right there makes me think it's a good product. Simple and easy to use. Nothing confusing or glitchy that would make me have to get in touch with them. Straightforward so I'm not trying to figure out a specific workflow.
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Alternatives Considered
Open Source
As Kamailio SIP Server is an open source, the major impact is on cost; it's free to use compared to any other Softswitch or server in the market. You can also customize it to your need and use the features that you need, which is one of the major plus points for the Kamailio SIP Server. And one server is enough to handle thousands of calls simultaneously.
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Zoom
The main reason why we switched to Zoom Phone is because our VOIP system inexplicably went down for almost a month and no one could figure out what was wrong. Lumen was charging way more than Zoom Workplace, but could not get the system to work.
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Return on Investment
Open Source
  • As its open source ROI is excellent.
Read full review
Zoom
  • Calls actually come through, resulting in our users trusting our phone system again
  • Improved internal communication
  • Users can be reached anywhere, so they do not have to stay at their desk to wait for important calls
  • Voicemail is processed faster because it is translated to text
Read full review
ScreenShots

Zoom Phone Screenshots

Screenshot of the Zoom AI for business phone communications, available at no additional costScreenshot of Zoom's integrated workflowsScreenshot of the Call Handling Panel