Call Manager is a unified call control center from Cisco that supports enterprise collaboration functions across the spectrum of IP telephony, video & web conferencing, and messaging. Features include call forwarding, call back, call transfer, ad hoc conferencing, and call park.
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Grandstream UCM series IP PBXs
Score 8.4 out of 10
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Grandstream presents the UCM series of IP PBX appliances as powerful yet easy to manage voice, video, data, and mobility communications platform, whichoffer an extensive set of unified communication features in an easy to manage on premise solution with no licensing fees, upgrade fees or costs per features. The Grandstream UCMs range from small and medium business deployments to small and medium enterprise solutions.
Avaya Aure requires lots of system maintenance and requirements. Also, Avaya cm does not have a graphical user interface. Avaya deployment requires lots of VMs and this is not acceptable for a clients 3CX is very cheap but they are very vulnerable to the attacks. Also they …
The Cisco Unified Communications Manager platform would be most suited for the below scenarios. 1. An organization with very restricted policies and compliance where can't move to cloud-based solutions for data security. They can install the CUCM on-premises. 2. An organization that is still on a legacy phone system could adopt CUCM to save costs and have better services.
As a PBX the UCM PBX can be cover the needs of all companies without exception. We think it is really a great and flexible solution that covers all the IP telephone needs a company may have. When we were researching the market to buy our pair of UCM 6308, we had also hoped to use it as a replacement for our Skype for Business installation, so to say to use it as our main solution for video conferencing. After trying to do this for a couple of years we would say that you can use Wave for video conferencing and I personally like it, but it is not well suited for bigger companies for using it as the main video conferencing solution. On the other hand, there are very few PBXs even offering a video conferencing solution and their solutions are not better that the UCM's solution!
The cluster implementation does not work on all network modes. Would be great if this was improved.
Wave on mobile phones works in a different way than on desktops and this makes it hard to set it up for use on the firewalls, as it requires different and more permissions than the desktop app. For example is one receives an invitation per email on the mobile phone and wants to participate in a Wave meeting as a guest, the still need access to the network ports needed to login the extension (while they only need / want to join the meeting as anonymous users). On the desktop app this is not needed.
There is a limit on the number of 1 device per connection type. We have an extension used in the maintenance department and is shared by 6 users. We were able to install it on 1 PC, 1 Wi-Fi phone and 1 Android shared mobile phone. We would like to install it on a second shared mobile phone, but this is not allowed by the UCM policy. We could use anther extension to do this, but the maintenance department does not want this. They want to accept calls with problem reports only on one extension. Would be great to be able to install the same extension on more than 1 Android devices.
We are very happy with our UCB 6308 pair. We have some issues that we would like to see improved, but the UCM 6308 does more than cover the main functionality it is intended for and has given us the needed solution for our remote workers.
Although it's very easy to use, once you understand the concepts of IP telephony, as I said before, I think Cisco could have improved the management interface of the platform, adding modern technologies and the design language of the other platforms like DNA Center, etc. This interface hasn't had a substantial improvement for about 10 years
Although we are very happy with our pair of UCM 6308, we still think there are some things that can be improved to make this a prefect product! Have mentioned the main points we think that should be improved on other parts of the review.
CUCM is supported by most third-party vendors for related products, so it makes finding solutions to specific needs easy. Also Cisco TAC is very knowledgeable, and we have never run into a problem they have not been able to resolve. Usually they are resolved without the need to escalate tickers either.
Grandstream almost always have a first response on any ticket within 24 hours, which is impressive. They do care to listen about customer problems and needs and are open suggestions / feature reuests, as long as there is a potential for the suggested change to benefit a big enough number of customers.
We have been a Cisco based shop and have looked at other cloud voice options such as MS Teams pbx, and others, but ultimately, the features, endpoints, and reliability of Cisco has been the common factor in staying with them as our voice provider. Their integrations, room systems, and hybrid design allows for us to be flexible and keep a high up time vs reliance on 100% cloud.
We were considering a solution from Alcatel at first. Very stable implementation for sure, as there are no frequent updates and no new features. Also no conferencing solution was included. A separate solution was offered for extra cost. So the choice was between a very stable PBX which would be pretty much unchanged for ever and a dynamic solution that would constantly grow. Without any doubt we opted for the ever growing / changing solution, knowing this would cost us in minor problems / instabilities. We did NOT regret this decision. So having opted for a growing and constantly developed solution we also look into the solution provided by Yeastar. By comparing the 2 solutions it was obvious that the Grandstream UCM 6308 was the best solution for us.
