What users are saying about
8x8 X Series
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Top Rated
438 Ratings
<a href='https://www.trustradius.com/static/about-trustradius-scoring' target='_blank' rel='nofollow noopener'>trScore algorithm: Learn more.</a>Score 8.3 out of 100
Based on 438 reviews and ratings
81 Ratings
<a href='https://www.trustradius.com/static/about-trustradius-scoring' target='_blank' rel='nofollow noopener'>trScore algorithm: Learn more.</a>Score 8.7 out of 100
Based on 81 reviews and ratings
- Feature Set Ratings
- Attribute Ratings
- Likelihood to Recommend
- Pros
- Cons
- Pricing Details
- Likelihood to Renew
- Usability
- Reliability and Availability
- Performance
- Support Rating
- In-Person Training
- Implementation Rating
- Alternatives Considered
- Contract Terms and Pricing Model
- Scalability
- Professional Services
- Return on Investment
Feature Set Ratings
Cloud PBX

8.7
8x8 X Series
87%
Avaya OneCloud UCaaS
Feature Set Not Supported
N/A
8x8 X Series ranks higher in 5/5 features
8x8 X Series ranks higher in 5/5 features
Hosted PBX

8.6
86%
125 Ratings
N/A
0 Ratings
Multi-level Interactive Voice Response (IVR)

9.8
98%
49 Ratings
N/A
0 Ratings
User templates

8.3
83%
131 Ratings
N/A
0 Ratings
Call reports

8.1
81%
171 Ratings
N/A
0 Ratings
Directory of employee names

8.4
84%
186 Ratings
N/A
0 Ratings
Call Management

8.4
8x8 X Series
84%
Avaya OneCloud UCaaS
Feature Set Not Supported
N/A
8x8 X Series ranks higher in 5/5 features
8x8 X Series ranks higher in 5/5 features
Answering rules

8.3
83%
224 Ratings
N/A
0 Ratings
Call recording

9.2
92%
187 Ratings
N/A
0 Ratings
Call park

7.9
79%
176 Ratings
N/A
0 Ratings
Call screening

8.0
80%
166 Ratings
N/A
0 Ratings
Message alerts

8.7
87%
216 Ratings
N/A
0 Ratings
VoIP system collaboration

8.3
8x8 X Series
83%
Avaya OneCloud UCaaS
Feature Set Not Supported
N/A
8x8 X Series ranks higher in 4/4 features
8x8 X Series ranks higher in 4/4 features
Video conferencing

7.6
76%
112 Ratings
N/A
0 Ratings
Audio conferencing

8.2
82%
157 Ratings
N/A
0 Ratings
Video screen sharing

8.7
87%
68 Ratings
N/A
0 Ratings
Instant messaging

8.8
88%
90 Ratings
N/A
0 Ratings
Mobile apps

8.5
8x8 X Series
85%
Avaya OneCloud UCaaS
Feature Set Not Supported
N/A
8x8 X Series ranks higher in 2/2 features
8x8 X Series ranks higher in 2/2 features
Mobile app for iOS

8.5
85%
177 Ratings
N/A
0 Ratings
Mobile app for Android

8.5
85%
136 Ratings
N/A
0 Ratings
Attribute Ratings
- 8x8 X Series is rated higher in 1 area: Usability
- Avaya OneCloud UCaaS is rated higher in 6 areas: Likelihood to Recommend, Availability, Performance, Support Rating, Contract Terms and Pricing Model, Professional Services
Likelihood to Recommend

8.3
8x8 X Series
83%
264 Ratings
9.5
Avaya OneCloud UCaaS
95%
27 Ratings
Likelihood to Renew

9.5
8x8 X Series
95%
14 Ratings
Avaya OneCloud UCaaS
N/A
0 Ratings
Usability

9.3
8x8 X Series
93%
39 Ratings
9.1
Avaya OneCloud UCaaS
91%
4 Ratings
Availability

9.2
8x8 X Series
92%
8 Ratings
9.7
Avaya OneCloud UCaaS
97%
3 Ratings
Performance

9.3
8x8 X Series
93%
8 Ratings
9.5
Avaya OneCloud UCaaS
95%
3 Ratings
Support Rating

7.3
8x8 X Series
73%
173 Ratings
9.7
Avaya OneCloud UCaaS
97%
25 Ratings
In-Person Training

10.0
8x8 X Series
100%
1 Rating
Avaya OneCloud UCaaS
N/A
0 Ratings
Implementation Rating

8.5
8x8 X Series
85%
12 Ratings
Avaya OneCloud UCaaS
N/A
0 Ratings
Contract Terms and Pricing Model

7.6
8x8 X Series
76%
8 Ratings
9.1
Avaya OneCloud UCaaS
91%
3 Ratings
Product Scalability

8.7
8x8 X Series
87%
6 Ratings
Avaya OneCloud UCaaS
N/A
0 Ratings
Professional Services

8.9
8x8 X Series
89%
7 Ratings
9.6
Avaya OneCloud UCaaS
96%
2 Ratings
Likelihood to Recommend
8x8 X Series
The 8x8 X Series allows flexibility to use the company phone system whether you are physically in the office using a handset, or are working remotely using the app on your smartphone. We are able to deploy 8x8 X Series very quickly since there is no requirement for PBX hardware or telco lines since you just need to be connected to the internet. We can easily get new users on the 8x8 phone system immediately.

Verified User
Manager in Information Technology
Construction Company, 1001-5000 employeesAvaya OneCloud UCaaS
The Avaya solution only adds to the collaboration of companies with unlimited meetings and no time limit. Cloud recording features not depending on local storage space. The software has high build quality and allows high quality video calls from anywhere.
Analista de infraestrutura
Grupo BoticárioChemicals, 501-1000 employees
Pros
8x8 X Series
- We love the conference calling since many users are working from home.
- The fact that we can reprogram it on the fly without having 8x8 do it is a big plus.
- Being able to take the phones with us using the app on our cell phones is a bonus.

Verified User
Administrator in Information Technology
Mechanical Or Industrial Engineering Company, 51-200 employeesAvaya OneCloud UCaaS
- Extreme audio and video quality during online meetings.
- It allows grouping many people at the same time in a meeting room, being able to create several simultaneous ones.
- Amazing interface and easy to use.
- It works very well on mobile devices.
- It works via the web.
Analista de sistemas
TIVITInformation Technology & Services, 201-500 employees
Cons
8x8 X Series
- App improvement - connectivity issues
- Base level training - new employee handbook/training
- Simplify steps on an overwhelming dashboard. Maybe the ability to set up quick links for functions we do often- to update VM is many, many steps.
- Customer service when placing a ticket - we have had many issues with them not taking the time to understand our question/problem.

Verified User
Administrative Assistant in Customer Service
Financial Services Company, 1-10 employeesAvaya OneCloud UCaaS
- I would like to see more of their in office communications systems. Right now they seem outpaced by competitors even though their core services are superior.
- The interface could be updated a little. There is a lot of interaction that the operator needs to go through that could be automated.
Communications Specialist
Yazaki North AmericaAutomotive, 10,001+ employees
Pricing Details
8x8 X Series
General
Free Trial
—Free/Freemium Version
—Premium Consulting/Integration Services
—Entry-level set up fee?
No
Starting Price
$12 Per User/Per Month
8x8 X Series Editions & Modules
Edition
8x8 Express | $121 |
---|---|
X2 | $241 |
X4 | $441 |
- Per User/Per Month
Additional Pricing Details
—Avaya OneCloud UCaaS
General
Free Trial
Yes
Free/Freemium Version
Yes
Premium Consulting/Integration Services
Yes
Entry-level set up fee?
No
Starting Price
—Avaya OneCloud UCaaS Editions & Modules
—
Additional Pricing Details
—Likelihood to Renew
8x8 X Series
8x8 X Series 9.5
Based on 14 answers
Everyone at the company now have the experiance needed to make phone calls, meetings, video conferencing. It's easy to use is unmatched in the industry. It's been a solid product throughout. The phone tree was easy to setup with the implementation team and they guided us throughout the process
IT specialist
CHCMedical Practice, 201-500 employees
Avaya OneCloud UCaaS
No score
No answers yet
No answers on this topic
Usability
8x8 X Series
8x8 X Series 9.3
Based on 39 answers
Most of the easy day-to-day questions are no longer even questions due to the ease of use and simplified experience on 8x8. Changing voicemail via the desk phone or mobile app could be simplified or match the ease of using the 8x8 desktop app.

Verified User
Professional in Sales
Telecommunications Company, 11-50 employeesAvaya OneCloud UCaaS
Avaya OneCloud UCaaS 9.1
Based on 4 answers
There are few times that we have not been able to take advantage of the tool, but those moments are related to the bandwidth of each person in [their] home. Those who have low signal cannot access meetings on the platform smoothly.
Reponsable de Alianzas
Fundación Huerta NiñoNon-profit Organization Management, 11-50 employees
Reliability and Availability
8x8 X Series
8x8 X Series 9.2
Based on 8 answers
In the time I have used 8x8 Virtual Office, the core system has been up and running almost flawlessly though we do have a slight performance degradation from time to time as is expected of cloud software. The one recurring issue for us is that the fax connection is not always functional for outbound messages. We usually have to retry three or four times to get the fax to connect reliably to the destination machine. Once connected, it's smooth sailing.
IT Manager
MedTrainerInternet, 51-200 employees
Avaya OneCloud UCaaS
Avaya OneCloud UCaaS 9.7
Based on 3 answers
We have never had problems with Avaya Spaces instabilities or inoperability. I believe the Avaya server is Tier3 with 99.9% availability. The meeting rooms are always active and can be accessed from anywhere and from any device because it has an official app on Android and iOS. I do not recommend going through the browser in meeting rooms because the experience is not so positive.
Analista de infraestrutura
Grupo BoticárioChemicals, 501-1000 employees
Performance
8x8 X Series
8x8 X Series 9.3
Based on 8 answers
No problems with performance, Pages load as they should. I can't answer on the reports side as only a handful of our Admins ( call center ) currently use that side of the software. It does intergrate very well with Office for meetings and conferences. Sometimes there is a slight lag or static when users are talking, but we found this to be a cause of a users computer had not restarted in a while, Once the user restarts thier computer the problem is resolved, So this is not an issue with 8x8
IT specialist
CHCMedical Practice, 201-500 employees
Avaya OneCloud UCaaS
Avaya OneCloud UCaaS 9.5
Based on 3 answers
The software is really great, the only problem being the integration with email platforms like Outlook. It is necessary to create a plugin to optimize the invitation experience. But I have nothing to complain about the rest. It's perfect, the experience during the meetings and the audio and image quality are differentiated and with excellent quality. Avaya Spaces works great on PC, web and apps and gives us a lot of mobility.
Analista de infraestrutura
Grupo BoticárioChemicals, 501-1000 employees
Support Rating
8x8 X Series
8x8 X Series 7.3
Based on 173 answers
I had very good interactions with the general support staff, whether it was over the phone or using the support portal. They are very responsive and do their very best to answer my questions to my satisfaction. My experience with follow-up by our sales representative has been below expectations, especially when it came to modifying our account.

Verified User
Director in Information Technology
Apparel & Fashion Company, 11-50 employeesAvaya OneCloud UCaaS
Avaya OneCloud UCaaS 9.7
Based on 25 answers
The support is good. Avaya is one of the largest companies in this area of unified communications. Support can be activated by phone and email. Our team has already triggered a few times and from what they told me everything was normal and fast. The price is a little expensive but I believe it is worth buying together for more security.
Computer Security Specialist
Grupo BoticárioChemicals, 5001-10,000 employees
In-Person Training
8x8 X Series
8x8 X Series 10.0
Based on 1 answer
The person giving the training was very engaged, He also listened and answered all the questions. He created a video for our company while he was training in case we needed to reference it again in the future. The questions he could not answer were answered within 24 hours via an email to the IT support staff here so we could share the answers with the rest of the group
IT specialist
CHCMedical Practice, 201-500 employees
Avaya OneCloud UCaaS
No score
No answers yet
No answers on this topic
Implementation Rating
8x8 X Series
8x8 X Series 8.5
Based on 12 answers
None that I can think of, Besides the call tree which can get complex, the problems we ran into were not a sticking point seeing the project as a whole was such a great success. One would expect more issues to arise when implementing a whole new phone infrastructure in a company this size
IT specialist
CHCMedical Practice, 201-500 employees
Avaya OneCloud UCaaS
No score
No answers yet
No answers on this topic
Alternatives Considered
8x8 X Series
8x8 X Series had competitive pricing and we absorbed another environment that was already under contract. In an attempt to have a single unified ucaas we migrated to 8x8. Cisco UCM and 3CX were more involved when setting up but gave us the ability to do anything we wanted with our calls. We had more freedom and did not have forced obsolescence with our PC or wireless clients. 8x8 on the other hand was very easy to setup once we had our call routing and flow and requires us to constantly update.
IT Manager
BBJ LinenEvents Services, 201-500 employees
Avaya OneCloud UCaaS
I have experienced less technical problems with Avaya compared to other platforms. Avaya was easy to implement for all ages as it didn't require a lot to log into sessions for the younger grade students and the features are simple enough that my first graders can use Avaya without the help of their parents.

Verified User
Administrator in Other
Education Management Company, 11-50 employeesContract Terms and Pricing Model
8x8 X Series
8x8 X Series 7.6
Based on 8 answers
At this time, we’re very happy with the pricing model that we have worked out and they have provided for us. Just be sure to do your homework, and use your comparisons to work out your cost with 8x8. They will be very straightforward with you on what they can
adjust for you.
adjust for you.
Sr.Telecom Manager
Acer America Corp.Computer Hardware, 5001-10,000 employees
Avaya OneCloud UCaaS
Avaya OneCloud UCaaS 9.1
Based on 3 answers
The intermediate version prices are cheaper than the leading video conferencing tools, but it does not have the recording feature. If I could change one thing, I would put this cloud recording functionality in this intermediate version of Avaya Spaces as well. I believe it would be a big differentiator from the competition.
Analista de infraestrutura
Grupo BoticárioChemicals, 501-1000 employees
Scalability
8x8 X Series
8x8 X Series 8.7
Based on 6 answers
We've had periods where our organization has grown a considerable amount and we have had no issues in scaling our communications with 8x8. The number of possible extensions that we can use is far more than we expect to go through in a very long time. The only complaint that I have is a very minor inconvenience for me where I have to download activation codes for each phone. I would prefer to have the phones automatically activated as soon as they are plugged in.
IT Manager
MedTrainerInternet, 51-200 employees
Avaya OneCloud UCaaS
No score
No answers yet
No answers on this topic
Professional Services
8x8 X Series
8x8 X Series 8.9
Based on 7 answers
PS had all the users etc. set up by our go-live date. All hard phones were activated and when we received them, all we had to do was set them up and punch in the activation code to activate them.
IT specialist
CHCMedical Practice, 201-500 employees
Avaya OneCloud UCaaS
Avaya OneCloud UCaaS 9.6
Based on 2 answers
One of the features of the PRO version, known as Power, is the possibility to record unlimited meetings in the Avaya cloud without worrying about storage space. We keep it for 30 days and then an intern downloads it to our internal network. This version also allowed us to do some events with more than 100 people connected without causing any network instability.
Analista de infraestrutura
Grupo BoticárioChemicals, 501-1000 employees
Return on Investment
8x8 X Series
- 8x8 [X Series] has been a staple for our organization for years, while it has worked, it has become dated and requires a massive update.
- The latest update took us offline for 72 hours. Despite adhering to the instructions given in the update email.
- Mobile and desktop apps do not function properly. The "Helper Tool" does not work and is a nuisance.

Verified User
Team Lead in Customer Service
Financial Services Company, 51-200 employeesAvaya OneCloud UCaaS
- Single number reach has helped our operations team to be connected anytime required.
- Management team is with Mobile client where decision making is quick and no calls are lost as mobile is available all the time.
- Voice Quality is extremely good and helps in getting many ppl in conference with ease.
- Voicemail system is used to leave important message when not available and Call Back feature is extremely great.

Verified User
Engineer in Sales
Telecommunications Company, 501-1000 employees