Logo of jester cap with thought bubble.

Image source: The Motley Fool.

Ribbon Communications Inc.  (NASDAQ:RBBN)
Q4 2018 Earnings Conference Call
Feb. 20, 2019, 4:30 p.m. ET

Contents:

  • Prepared Remarks
  • Questions and Answers
  • Call Participants

Prepared Remarks:

Operator

Ladies and gentlemen, thank you for standing by. Welcome to the Ribbon Communications Fourth Quarter 2018 Earnings Conference Call. During the presentation, all participants will be in a listen-only mode. After which we will conduct a question-and-answer session. (Operator Instructions) As a reminder, this conference is being recorded, Wednesday, February 20th, 2019.

I would now like to turn the call over to Mr. Daryl Raiford, Chief Financial Officer of Ribbon. Please go ahead, sir.

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Thank you. Good afternoon and welcome to Ribbon's fourth quarter and full year 2018 financial results conference call. On the call with me today is Fritz Hobbs, our President and CEO. Today's call is being webcast live on our Investor Relations website at ribboncommunications.com. Both our press release and our supplemental data are currently available on our website. Shortly after the call, a recording of this call and the transcript will be available.

I'd like to remind you that during this call we may make certain forward-looking statements. Such statements are based on our current expectations, forecasts and/or assumptions regarding Ribbon's business, financial results, growth, anticipated benefits from past and pending acquisitions, and other opportunities in the marketplace that include risks and uncertainties that could cause actual results to differ materially from the statements discussed today. Any forward-looking statements are qualified in their entirety by cautionary statements contained in Ribbon's most recent quarterly and annual reports on Form 10-Q and 10-K respectively.

While we may elect to update or revise forward-looking statements at some point, we specifically disclaim any obligation to do so. Unless otherwise indicated, all results discussed are on a non-GAAP basis. Statements about profitability refer to adjusted EBITDA unless otherwise indicated. A reconciliation of GAAP to non-GAAP results may be found in our press release and within the supplemental data on our Investor Relations website.

And now, I'd like to turn the call over to Fritz.

Franklin W. Hobbs -- President & Chief Executive Officer

Thank you Daryl, and good afternoon to everyone on the call. This was a pivotal year for Ribbon Communications, and I'm extremely pleased with the accomplishments that we have made both strategically and financially. During the year, we completed a significant complicated merger integration while continuing to effectively serve our worldwide customer base. We nearly doubled the combined profitability of our two predecessor companies as compared to 2017. This dramatically improved our financial strength and balance sheet flexibility. We broadened our software offerings and strengthened our enterprise focus with the acquisition of Edgewater Networks. We made progress driving forward our Kandy Cloud CPaaS and UCaaS offerings with several major accounts and numerous enterprises. And with Ribbon Protect, our Security and Analytics software, we deployed this product at 10 customers, including our large previously announced launch at SoftBank, and we are in trials at numerous service providers and enterprises.

I'm very pleased with our fourth quarter and full year 2018 financial performance. We exceeded our expectations for both revenue and adjusted EBITDA. Specifically, in the fourth quarter, non-GAAP revenue was $173 million and adjusted EBITDA was $34 million. For the full year 2018, non-GAAP revenue was $612 million, an increase from last year of 73%. Adjusted EBITDA grew to $84 million, an increase of 105%.

Daryl will take you through our financial performance and 2019 outlook. But first, I would like to highlight a few key achievements. First, we continue driving forward our strategy to invest in our core products where we have increasingly focused on software solutions. In 2018, nearly our entire research and development effort, over 95% of our R&D investment, was directed into software and cloud product development. Overall we're very pleased with the customer acceptance of our session virtualized software, also known as SWe, were we have over 1,500 customers of all sizes running it, and we currently have over 60 service provider and large enterprise customers performing trials. We continue to believe we are uniquely positioned to take advantage of the shift to NFV with our completely virtualized SBC software capabilities.

Additionally, during the year, we grew our installed footprint at a large US-based service provider along two keypads. One, we sold additional SWe software or mobile multi-network, that is handling traffic with billions of mobile minutes of use per month. Two, we saw a significant increase in the amount of network modernization from this customer, replacing legacy equipment with Ribbon network transformation software solutions. Additionally, in our core products we delivered a large session software solution order to an existing US-based service provider that is going through integration and product rationalization as a result of its acquisition of another large service provider. This customer has experienced massive growth of IP-to-IP traffic, as well as the conversion of TDM customers to IP, which is driving strong capacity needs for Ribbon's session software across its US network.

A major North American MSO purchased additional session software solutions to expand its geographical footprint for interconnect. This geographic and network expansion will support the collapse of three disparate networks into one common infrastructure, that is fully based on Ribbon's software solutions. And we continue to provide software solutions for the network transformation market. For example, SoftBank continues to accelerate its IP migration, replacing its legacy equipment with a combination of Ribbon's session software and appliances. For an e-commerce provider, who is building in a mobile network in Japan, we deployed a combination of our solutions, such as media gateways, signaling and session software and appliances. And for a major wireless service provider in India, we continue to provide advanced network transformation solutions as they build their wireless network capability. We view network modernization as a solid global market for our NTR solutions.

Second, we continue to drive our strategy to leverage our customer footprint in global reach. In the fourth quarter we deployed Ribbon's session software solutions within British Telecom Global Services, a major GENBAND SBC customer, whom now has adopted Ribbon's SBC software and appliance solutions for security and routing functions as part of its evolution to a SIP-based conferencing services. British Telecom is just one example where we're transitioning customers to the Ribbon session software solutions.

Third, I'm encouraged by our strategic traction in 2018 with both Ribbon Protect and Kandy Cloud. In terms of Ribbon Protect, as previously mentioned, we continue to add new customers, and now have 10 enterprise and service provide customers in production. We are in trials at numerous service providers and enterprises. In terms of Kandy Cloud, we continue to grow cloud subscribers with major deployments, such as the city of Los Angeles and with a major global car rental company. Due to the hard work of the entire Ribbon team, I believe we entered 2019 with a much stronger software product lineup of robust pipeline with numerous new market opportunities and continue earnings momentum.

In 2019 we are determined to drive forward our strategic priorities. In 2019, we announced our plan to unify and streamline our sales and service organization. As a result, Steve Bruny is now leading our sales and services effort. Steve has previously led Ribbon's global services organization, brings over 30 years of sales and services experience to his expanded role. In addition, Tony Scarfo, another seasoned Ribbon executive is now leading our R&D, customer support and supply chain functions. These management changes were a natural evolution of our streamlining efforts after we successfully completed our 2018 integration activities. I'm confident this organization will deliver expanded value to our worldwide customers.

Also, we recently announced our intention to acquire the business assets of Anova Data, a cloud-native, streaming analytics platform. We believe this software technology will augment the capabilities of Ribbon Protect software. In addition to offering new revenue generating applications to mobile service providers, the addition of Anova software will allow us to embed advanced service assurance and customer care applications within our existing analytic software solutions. In summary, I'm very pleased with our accomplishments both this past quarter and for the full year 2018.

Looking to 2019, we see opportunity in our service provider market with enhanced software solutions meeting the needs of NFV and digitalized environments where we are strategically positioned. We plan to expand our Enterprise Edge business across our global footprint where we are number one in market share in the small to medium enterprise segment of the SBC market. We plan to leverage our strong market position in key verticals, such as financials and federal, as well as key markets such as Japan to drive solution sales. Overall, I feel that we are well positioned to capture share in both our service provider and enterprise markets as these evolve toward more complete end-to-end software solutions.

With that, let me turn the call over to Daryl.

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Thank you, Fritz. I'm going to review our non-GAAP financial results for the fourth quarter and full year 2018. I'll then provide commentary on our outlook for 2019. The slides within our Investor Relations website have supplemental information that details our historical financial performance. Our reporting framework is consistent with what we have presented in prior periods. I would encourage you to access these materials from our website at this time if you have not already done so.

As a reminder, when I refer to non-GAAP in conjunction with the financial metrics, these financial metrics exclude the effect of purchase accounting and other items detailed in our earnings materials. Reconciliations of our non-GAAP financial metrics are provided in our earnings press release and our earnings presentation, both of which are available on our Investor Relations website.

Now, turning to the financial results. On a non-GAAP basis our fourth quarter 2018 total revenue was approximately $173 million. Gross margin was 65%. Operating expenses were $81 million. Earnings per diluted share was $0.26, and adjusted EBITDA was $34 million. As a percentage of revenue, adjusted EBITDA was 20% during the fourth quarter. For the full year 2018, on a non-GAAP basis, total revenue was $612 million. Gross margin was 62%. Operating expenses were $307 million. Diluted EPS was $0.58, and adjusted EBITDA was $84 million.

Enterprise sales were 23% of our GAAP product revenue this quarter and 21% for the full year 2018. Enterprise is a relatively faster growing market for us, and we expect enterprise revenue percentage to continue growing over time as a result of the acquisition of Edgewater, coupled with projected growth in sales of application, security and analytics software to the enterprise.

As a percentage of total non-GAAP product revenue, sales of software and software subscriptions were greater than 40% in the fourth quarter and for the full year 2018. We are seeing positive impact from our sales of virtualized software solutions as more customers embrace the benefits of NFV. Our relative strong mix of software sales in 2018 continued to benefit our gross margins. Verizon continued as a greater than 10% customer for both the fourth quarter and the full year of 2018.

Turning to the balance sheet. Cash and investments were $51 million at the end of Q4 as compared to $43 million at the end of Q3, primarily due to $14 million of cash flow generated from operations, which was slightly offset by $3 million repayment of borrowings under our line of credit. Revolver borrowings were $55 million at the end of December, and we have undrawn availability of $45 million.

Now I'd like to turn to our 2019 outlook. For full year 2019, we expect our annual adjusted EBITDA to grow year-over-year by approximately 25%, and be in the range of $100 million to $110 million. Our adjusted EBITDA guidance is predicated on low, single-digit annual year-over-year projected non-GAAP revenue growth, which we believe is appropriate given the overall macro environment, current spend outlook of the service provider in the enterprise markets, and our opportunity pipeline.

Our service provider market is traditionally always characterized by spin seasonality with higher revenue recognized in the second half of the year compared with the first half. For 2019, we expect the seasonality to be exacerbated by current soft macro conditions, including the impact of the early 2019 federal government shutdown, order timing, and what we judge to be the spending patterns of our service provider customers. These condition causes to expect an unusually lower first quarter sales volume with a return to modest year-over-year growth over the remainder of 2019. As previously mentioned, we do believe full year 2019 revenue will grow by low-single digits as compared with 2018.

In summary, we had a solid financial year in 2018 significantly strengthening our profitability and financial leverage. We are confident that we have the products, market position, expansive global reach and proven team to win in the marketplace. We will continue to be disciplined with our cost structure while driving revenue growth. Our balance sheet remains strong, and we look to further consolidate the market as appropriate, to drive both revenue growth and accretive financial scale.

That concludes our formal remarks. I want to thank all of you for your continued support of Ribbon. At this time I'd like to turn the call over to the operator for questions. Operator, we are now ready for our first question.

Questions and Answers:

Operator

Thank you. (Operator Instructions) Our first question comes from the line of Mike Latimore from Northland Capital Markets. Your line is open, please go ahead.

Michael Latimore -- Northland Capital Markets -- Analyst

Great. Yeah. Very nice fourth quarter there. Edgewater, does that kind of hit your expectations for the fourth quarter?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Yes it did. Mike, while we said that we don't expect to really report on Edgewater going forward after the third quarter, the integration is well, well under way and we're incorporating the functions within the Ribbon functions and the products across our portfolio. Edgewater did exceed our expectations. We had guided to $10 million and we reported $12 million of Edgewater sales in the fourth quarter.

Michael Latimore -- Northland Capital Markets -- Analyst

Okay, got it. And in terms of the first quarter outlook, is that both product and service effecting the first quarter guidance there or is that more on the product side?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

No, I would say, it's products and service. We are -- it would be a combination. Like we said, we're expecting -- we've judged the macro conditions, we are aware of others in other fare companies in the industry and what they said about Q1. We've lifted our order pipeline. We think that Q1 will be a little soft compared to normal seasonality with the return to low- to single-digit growth for the full year in 2019 in terms of top line.

Michael Latimore -- Northland Capital Markets -- Analyst

All right. And then on the SBC, can you -- do you have like -- sort of like what percent of product revenue was SBC in the quarter?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Yes. Our session solution -- our session software solution sales in the fourth quarter on non-GAAP product revenue was 64%, and for the full year it was 56%.

Michael Latimore -- Northland Capital Markets -- Analyst

Got it. All right. And I guess just last one. Any update on the lawsuit with Metaswitch where that stands?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Yes. Ribbon will continue -- in terms of the lawsuit with Metaswitch, we're going to continue to defend our intellectual property rights against Metaswitch. We will continue pursuing help from the courts to receive compensation from Metaswitch's widespread unauthorized use of Ribbon's trade secrets and patented technology. Our original patent lawsuit against Metaswitch in 2014 resulted in a jury verdict that Metaswitch infringed seven Ribbon patents and owed approximately $9 million in damages to Ribbon. We are looking forward to our upcoming April 22nd trial to assert our contention that Metaswitch has been engaged in an orchestrated campaign to steal and use Ribbon's trade secrets.

Michael Latimore -- Northland Capital Markets -- Analyst

Got it. Okay. Very good. Thanks a lot.

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Thank you. See you soon.

Operator

Our next question comes from the line of Mark Kelleher from D.A. Davidson. Your line is open. Please go ahead.

Mark Kelleher -- D.A. Davidson -- Analyst

Great. Thanks for taking the questions. It sounded like you may have anticipated that last question. Just wanted to...

Franklin W. Hobbs -- President & Chief Executive Officer

We're asked that question a lot.

Mark Kelleher -- D.A. Davidson -- Analyst

I bet you are. The -- just to get this -- the Q1 revenue guidance now down more. Usually the seasonality there is pretty significant. Last two years it's been down 20% sequentially. You're indicating it could be down more than that, that the 20% is the typical seasonality?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Yes. Like we said, we think the first quarter is going to be a difficult comparable to last year, but we do believe, as we said, we think the full year will be up single-digit revenue growth versus last year.

Mark Kelleher -- D.A. Davidson -- Analyst

Okay. And can you talk a little bit about the Kandy and the expectations there? Sound like that's getting some traction.

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

We do -- we are making progress with Kandy. We continue investing in the product. We see some traction in terms of bookings performance. And while it's not material to our business right now, there is growth of a little base, and we expect to be speaking to that coming up here more in the future as traction continues.

Mark Kelleher -- D.A. Davidson -- Analyst

Okay. And then maybe just talk about the general competitive position that you're in. Are you taking market share? Does your guidance for the year assumes growing at the market rate? Or do you -- how strong is the competition, particularly Oracle?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

In terms of our core -- so the question I believe is in terms of our core business as opposed to CPaaS or UCaaS. In terms of our core business, we do expect we are number one in terms of the market share in a number of our positions. We do expect in the service provider market that the undercurrents will continue, whereby the growth in the market will be led by NFV and virtualization, offset by decline in traditional equipment sales. We position ourselves very well to be -- as we said in the prepared remarks, our software and subscription sales -- our software stand-alone and subscription sales for the year and the fourth quarter were both well above 40% of our total product sales. We expect that to continue. We positioned ourselves into that virtualized NFV wave, and we believe that we can take share with that.

Mark Kelleher -- D.A. Davidson -- Analyst

Okay. Great. Thanks.

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Thanks, sir.

Operator

(Operator Instructions) Our next question comes from the line of Paul Silverstein from Cowen and Company. Your line is open. Please go ahead.

Paul Silverstein -- Cowen and Company -- Analyst

Thanks guys. Appreciate you taking the questions. I'll give it to you one at a time, but I've got several. First off, what is the organic growth that you're expecting for 2019?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Hi Paul, it's nice to speak to you. We expect our core products to be relatively stable in terms of 2019 growth with virtualized software-only sales, Enterprise Edge and cloud initiatives to be growing. And we expect this -- that particular growth to be offset -- somewhat offset by lower appliance sales. We do expect declines in our overall maintenance revenue, driven by pricing pressure and some decommissioning of legacy equipment.

Paul Silverstein -- Cowen and Company -- Analyst

So if I net all that out, I just think simplistic way and I apologize, but I'm a simple person. If I just -- if netting all that out, if I back out Edgewater and I apologize on getting any other prominent acquisitions, I don't think they were, but back at Edgewater, what would all in the organic growth look like for '19?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Well, we're not breaking out Edgewater for 2019. We said we would not do that, Paul (ph) off of the October 30th call. Taking altogether though, we do expect 2019 to grow in the mid -- in the low-single digits. We expect the service -- the service provider market we do participate in to grow at a very modest CAGR, and we expect to grow our relative percentage of enterprise revenue to total revenue, we expect to grow that in an enterprise market which analysts believe will grow in a range of between 6% and 12% CAGR. So we're taking steps to position the core business into the higher kind of subsection -- subsegment growth of the virtualized NFV market and toward enterprise which has a higher CAGR.

Paul Silverstein -- Cowen and Company -- Analyst

I got it. And I recognize that you did answer in part the following question, but I want to ask it, which is given the expectation for an extraordinarily low seasonality -- in your first quarter typically seasonally low, but it sounds like you're expected to be that much lower this year. Going back to your comments about visibility, how much of the outlook for the year is based on a solid pipeline, solid order book beyond Q1 visibility? And how much of it is somewhat looser or based on how -- and trying to get a feel for just how much visibility you have in for the year?

Franklin W. Hobbs -- President & Chief Executive Officer

You know our -- I think we have typical season -- we have typical visibility that we would have at this time. Our backlog is a percentage of -- our backlog business is relatively the same. Of course, we're growing more of a book ship business when we speak -- when we've taken our number one market position in the SME segment of the SBC market. I think that in terms of the seasonality, while we don't guide Q -- we certainly don't guide within the quarters, we've said -- we've seen what our peers have commented upon. And when we do see some soft conditions in Q1, no doubt some of these macros and the disruption on the federal shutdown things like that have played into some of the service providers CapEx and spin -- spin thoughts as well. So while we do expect that seasonality, as we said, to be a little exasperated in Q1, we do expect to still grow at single -- low-single digits for the full year. And I think Paul, we really -- with the full year still in front of us, we still have a full year in front of us, we think that it is really appropriate right now to just guide to the ranges that we've guided too, and then refine that as we get farther into the year.

Paul Silverstein -- Cowen and Company -- Analyst

Understood. If you can bear with me just a couple more I appreciate it. From a gross margin perspective, any thoughts you can share with us in terms of what you expect or hope to get to as a reasonable best case for '19 or even better exiting '19?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Well, we don't grow -- we don't guide gross margins.

Paul Silverstein -- Cowen and Company -- Analyst

I know you don't do formal guidance, but (multiple speakers)

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

We don't. It's there to believe that the -- and of course, gross margin does vary from quarter-to-quarter depending on our product mix, depending on the amount of software content versus appliance content and things like that. But we do still expect that continuing trend of gross margin over the longer term to be driven by our ship to software and further to be that gentle increase or upslope in margin over the long term.

Paul Silverstein -- Cowen and Company -- Analyst

Got it. And just one or two more, I appreciate it. With respect -- I heard your response on Kandy. Is it the same response on Ribbon Protect in terms of the trajectory but currently the revenue base is still very low now we're breaking out or is it more meaningful in the case of Ribbon Protect?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

No. You are correct, you're correct. (Multiple speakers)

Paul Silverstein -- Cowen and Company -- Analyst

All right. So you're seeing traction on both. My final question, any visibility as to when those become meaningful, plus percent of revenue, is it within 12 months or is it further out in that based upon your current order books, your customer acquisition et cetera? Any thoughts you could share?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

We're really excited about the potential. I think that it would not be unreasonable for something beyond -- within the timeframe that you mentioned for us to be speaking more to it, but we have work to do. We have that traction to capture. We have those opportunities to bring home, we'd be excited to then get it to a point where we'll be speaking to it.

Paul Silverstein -- Cowen and Company -- Analyst

Got it. And last question for you, and Fritz, if I may, which is, when you all look into the future of the next 12 months, what are you most excited about? And what's the greatest risk from a high-level perspective? What's the greatest opportunity? What's the greatest risk?

Franklin W. Hobbs -- President & Chief Executive Officer

Well, I think the -- Paul, I think the greatest opportunity is, I think this restructuring of our teams is actually really interesting opportunity. I mean, I've said to you all a bunch of times, I think we have our unique asset in our distribution system around the world. And now we have a couple more products to push through that, I think this is going to be a really interesting year to prove out that that's a very important and valuable asset for us. So I look at that as one of the real opportunity.

I also think, as Daryl alluded to earlier, I think this is going to be interesting year to see if we can get enough momentum that I really want to talk to you about the green shoots that we've talked to them in the past, which would be Ribbon Protect, Kandy, Anova, obviously, the projected as we move through -- so what the great thing about Edge is, it allows us to provide a broader solution package for some of our clients. So I think that's going to be all upside. I think the risk is always. You've got a macro risk if the world is really slowing down, but most of this stuff has to happen. So we -- I think that that's a -- we would look at this as a fall of the loan kind of sales, this going to be tough. But I think that's the kind of risk you can run into, because as you well know and one of our problems with giving more guidance than we do to you -- on the quarters et cetera is, there's a lot going on in some of these countries where we really think we have interesting opportunity, and things can change pretty damn quickly on their order book. And that's why we're a little more conservative than we probably -- a little more conservative, because we don't know how that's going to play out. But I think that we really are excited about the opportunities, whether it be in India or in Japan or in our federal space, and I think with this organization we're going to be better able to coordinate our solution set to our clients.

Paul Silverstein -- Cowen and Company -- Analyst

Got it. Daryl, anything you want to add?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

No, I would acknowledge (ph) that. I think the company is positioned itself very, very well to take advantage of some of the trends around the NFV and virtualized network environments. We've made steps to expand our enterprise business and take -- and as Fritz said, the opportunity to take that overseas is in front of us, and we intend to do that, and we -- these markets around our key financial -- key verticals and financials, federal -- and particularly in Japan, and really the outside of United States network transformation solutions marketed in general is still a good opportunity for us for sure, and I think we're excited about that. Those would be really three fundamental aims that I think, as Fritz said, the new organization.

Franklin W. Hobbs -- President & Chief Executive Officer

And I guess, follow-up on you. We've also got ourselves in a position where I don't think we're afraid to be opportunistic if we see something out there that looks really interesting. Whether it'd be new technology that fits or role-up opportunity, I think we're going to try to be pretty opportunistic and we can find things to do. And so I think we have a balance sheet and financial structure today that should give us a fair degree of flexibility in that regard if we can find some opportunities. I wouldn't be surprised if we do, but that will be obviously something we'll talk about when we get there.

Paul Silverstein -- Cowen and Company -- Analyst

Got it. I got a quick housekeeping. Are we going to see in the K, how large (inaudible) you call it out as nearly 10% for the quarter and the year, but will you disclose it in terms of total contribution?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Yes. The percentage is disclosed in the K.

Paul Silverstein -- Cowen and Company -- Analyst

Can you share that us with at this time?

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

I don't have it in front of me. I'm sorry Paul, I don't have. The K will be on file by the end of next week or right at the first of the week after, and I'm just going to yield to that, because I just don't have it in front of me.

Paul Silverstein -- Cowen and Company -- Analyst

(Multiple Speakers).

Franklin W. Hobbs -- President & Chief Executive Officer

Paul I would say -- I would say this. We're excited about our relationship with Verizon. I mean, we feel like we have a really great symbiotic relationship with them. They've been incredibly open to having dialogue with us across all kinds of product mix. So we feel like they are a great client, we hope we're a great supplier to them.

Paul Silverstein -- Cowen and Company -- Analyst

All right. Thanks guys.

Franklin W. Hobbs -- President & Chief Executive Officer

Thanks, Paul.

Operator

At this time I'd like to turn the call back over to our presenters for any final remarks.

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Well, thank you everyone for joining our fourth quarter and full year 2018 earnings conference call. As Fritz said, we're very excited about 2019 and the opportunities that we have in front of us. We look forward to speaking with you following the Q1 earnings cycle.

Operator

Ladies and gentlemen, that does conclude the call for today. We thank you for your participation, and ask that you please disconnect your lines.

Duration: 34 minutes

Call participants:

Daryl E. Raiford -- Executive Vice President & Chief Financial Officer

Franklin W. Hobbs -- President & Chief Executive Officer

Michael Latimore -- Northland Capital Markets -- Analyst

Mark Kelleher -- D.A. Davidson -- Analyst

Paul Silverstein -- Cowen and Company -- Analyst

More RBBN analysis

Transcript powered by AlphaStreet

This article is a transcript of this conference call produced for The Motley Fool. While we strive for our Foolish Best, there may be errors, omissions, or inaccuracies in this transcript. As with all our articles, The Motley Fool does not assume any responsibility for your use of this content, and we strongly encourage you to do your own research, including listening to the call yourself and reading the company's SEC filings. Please see our Terms and Conditions for additional details, including our Obligatory Capitalized Disclaimers of Liability.