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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
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                                    FORM 8-K

                                 CURRENT REPORT

     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

                                 August 23, 2004

                Date of Report (Date of earliest event reported)
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                              SONUS NETWORKS, INC.
             (Exact Name of Registrant as Specified in its Charter)



    DELAWARE                    000-30229                     04-3387074
  -----------                   ---------                     ----------
(State or Other            (Commission File Number)           (IRS Employer
 Jurisdiction                                                Identification No.)
of Incorporation)


                250 APOLLO DRIVE, CHELMSFORD, MASSACHUSETTS 01824
               (Address of Principal Executive Offices) (Zip Code)

                                 (978) 614-8100

              (Registrant's telephone number, including area code)

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Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

|_| Written  communications  pursuant to Rule 425 under the  Securities Act
    (17 CFR 230.425)

|_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act
    (17 CFR 240.14a-12)

|_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
    Act (17 CFR 240.14d-2(b))

|_| Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
    Act (17 CFR 240.13e-4(c))




Item 2.02. Results of Operations and Financial Condition.

     The  information  in  this  Current  Report  on Form  8-K and the  exhibits
attached  hereto  shall not be deemed  "filed" for purposes of Section 18 of the
Securities Exchange Act of 1934, as amended, or incorporated by reference in any
filing under the Securities Act of 1933, as amended, or the Exchange Act, except
as shall be expressly set forth by specific reference in such a filing.

     On  August  23,  2004  at 8:00  a.m.,  Sonus  Networks,  Inc.  will  host a
conference call and  simultaneous  webcast to discuss its financial  results for
the quarter ended June 30, 2004. A copy of the script for this  conference  call
is attached as Exhibit 99.1 hereto.

Item 9.01. Financial Statements and Exhibits.

(c)     Exhibits

        The following exhibit relating to Item 2.02 shall be deemed to be
        furnished, and not filed:

        99.1    Script of Sonus Networks, Inc. for conference call and
                simultaneous webcast on August 23, 2004 to discuss its financial
                results for the quarter ended June 30, 2004.




                                    SIGNATURE


     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.



Date: August 23, 2004                   SONUS NETWORKS, INC.
                                        By:
                                           /s/ Albert A. Notini
                                           ------------------------------------
                                           Albert A. Notini
                                           President and Chief Operating Officer



                                  Exhibit Index

99.1     Script of Sonus Networks, Inc. for conference call and simultaneous
         webcast on August 23, 2004 to discuss its financial results for the
         quarter ended June 30, 2004.

                                                                    Exhibit 99.1

Sonus Networks, Inc.
Second Quarter Fiscal 2004 Conference Call

Jocelyn Philbrook, director of investor relations:

Thank you. Good morning everyone. Thank you for joining us today as we discuss
our second quarter fiscal 2004 financial results. With me today are Sonus'
Chairman and CEO, Hassan Ahmed and President and COO, Bert Notini. Brad Miller,
Sonus' Chief Accounting Officer and Controller, is also joining us on the call
today.

The press release announcing our second quarter financials was issued Friday,
August 20th after the market closed on Business Wire and on First Call. The text
of this release also appears on our Web site at www.sonusnet.com.

Before Hassan offers his opening remarks, I would like to remind you that during
this call, we will make projections or forward-looking statements regarding
items such as future market opportunities and the company's financial
performance. These projections or statements are just predictions and involve
risks and uncertainties such that actual events or financial results may differ
materially from those we have forecasted. As a result, we can make no assurances
that any projections of future events or financial performance will be achieved.
For a discussion of important risk factors that could cause actual events or
financial results to vary from these forward-looking statements, please refer to
the "Risk Factors" section of our annual report on Form 10-K/A dated July 28,
2004 and the "Cautionary Statements" section of our quarterly report on Form
10-Q dated August 20th 2004.

Any forward-looking statements represent our views only as of today and should
not be relied upon as representing our views as of any subsequent date. While we
may elect to update forward-looking statements at some point, we specifically
disclaim any obligation to do so.

In addition, because we were unable to give several days notice of this call,
the statements that we make on this call may not be considered valid public
disclosure for purposes of Regulation FD.

To address this, we have filed a Form 8-K with the SEC containing our script for
this call. However, because it was obviously impossible for us to include in
that script the responses to questions asked on this call, our responses to
questions must be limited to the information covered in our prepared remarks.
Please bear that in mind if we are unable to address certain questions you may
wish to ask on this call.

I would now like to turn the call over to Hassan.

                                       1


Hassan Ahmed, chairman and chief executive officer:

Thanks Jocelyn. Good morning everyone and thanks for joining us. I am pleased
that on Friday Sonus reported its second quarter financial results and has filed
its Form 10-Q for the second quarter of 2004. With this filing Sonus is now
current on its financial reporting requirements with both the SEC and Nasdaq. We
are also pleased that Friday's filing returns us to a normal reporting and
filing cycle and we are moving beyond what has been a difficult phase in our
history.

As you know, when Nasdaq denied our request for an extension to complete our
second quarter 10-Q filing, they afforded us the opportunity to re-list on the
Nasdaq under the continued listing requirements rather than the more stringent
initial listing standards. We have already submitted our paperwork for
re-listing on the Nasdaq National Market.

And, while it could have been easy to lose momentum or become distracted during
this period, I am very pleased with the focus and dedication that the Sonus team
has demonstrated in continuing to build our business and expand our presence.
The strong second quarter results that we reported Friday are a testament to the
team's performance.

I'll start today by first reviewing Sonus' financial results for the second
quarter and highlighting some of the factors that have driven our business
during the first half of 2004. Then we'll look at the market overall and some of
the recent events in our industry that are catalyzing the adoption of packet
telephony by carriers worldwide. Bert will then review our financial results in
more detail. Following that, we'll open the call up to questions.

Now let's look at the quarter. We made important progress in our business during
the second quarter. Our revenues grew 16% sequentially to $42.4 million and our
total deferred revenue balance remained strong at $93.0 million. We are pleased
that Sonus' profits also grew on a GAAP basis to $4.9 million or $0.02 per
share. Additionally, our balance sheet continues to be very strong with over
$303 million in cash and marketable securities at the end of the second quarter.

Our growth has been driven by an increasingly diversified customer base, with
new customers selecting Sonus and existing customers expanding their
deployments. Qwest Communications, AT&T Wireless and Volo Communications each
represented at least 10% of our revenues in the second quarter.

Qwest Communications continues to be an important contributor to Sonus'
business. Qwest began building their voice over IP trunking network with Sonus
over three years ago. Since that time, Qwest has successfully expanded this
network to support the increase in their long-distance traffic related to 271
relief. Building on that success, we were very pleased that Qwest announced in
the second quarter that they are moving into the access market and selected
Sonus to enable them to deliver VoIP business access services.

                                       2


Global Crossing, another of our existing customers, also continued to expand
their large-scale deployment with Sonus. They achieved several significant
milestones in the second quarter. First, they announced that they were
decommissioning a core circuit switch in favor of voice over IP and they plan to
take additional TDM switches out of service in 2004 and 2005. Additionally, the
traffic volumes on Global Crossing's Sonus-based network have been growing
steadily. In May, Global Crossing reported that minutes of use on their voice
over IP network had more than doubled between January 2003 and March 2004. As a
testament to the reliability of our solutions, Global Crossing also reported
that they recorded 99.999 percent uptime for 2003 and year-to-date 2004 on the
Sonus network.

Also during the second quarter, Sonus announced that Volo Communications is
implementing Sonus' voice over IP infrastructure solutions to enhance their
nationwide MPLS-based IP backbone.

Our Q2 revenues also reflect the growing diversity of our solutions. Last
quarter, we were pleased to announce that our SMARRT Wireless solutions are
being deployed by one of the largest wireless operators in the United States,
AT&T Wireless. AT&T Wireless is deploying packet voice in the core of their
nationwide network to reduce costs associated with carrying their long-distance
traffic and interconnecting MSCs. AT&T Wireless was again a 10% customer in Q2.

While below the 10% threshold, we are also very pleased that AT&T was once again
an important contributor to Sonus' business during the second quarter as AT&T
continued its roll-out of its AT&T CallVantage Service, one of the industry's
leading Voice over IP offerings. Supported by Sonus, AT&T CallVantage Service
can now serve customers in 170 markets in the U.S. and is currently being
trialed in several countries around the globe.

We are very excited that Sonus now has several announced customers including
NTT, Qwest and AT&T, that are deploying our solutions for access, or what is
more conventionally referred to as Class 5, services. We are pleased to have
been selected by some of the largest carriers in the world to support their
access networks, and expect our access solutions to be a growing portion of our
revenues over time. Sonus formally introduced its voice over broadband solution,
the centerpiece of our access strategy, at SUPERCOMM in June. Featuring the ASX
Access Server, our Insignus softswitch delivers local area calling features as
well as advanced IP-based functionality over broadband technologies, including
DSL and cable. Broadband is truly a disruptive technology that is reshaping the
competitive dynamics of the telecommunications market. For carriers, it enables
them to expand their service offerings to include bundled voice, data and
multimedia services, without owning the last mile. For consumers, it provides
cost-effective, innovative voice services over their broadband connections,
using their existing telephones.

                                       3


On the product front, Sonus continues to lead the market and is dedicated to
extending this position. Sonus has been focused on delivering carrier-grade
voice over IP solutions for the last seven years. During that time, we have
extended our solutions from the trunking market into the access and wireless
markets. Our development efforts are focused on continuing to expand these
offerings, adding new services and features, increasing our signaling
capabilities to address additional international markets and, of course,
continuing to build on the industry-leading scalability and reliability of our
solutions. As an example of our continual development, in addition to announcing
our voice over broadband strategy at SUPERCOMM, Sonus also announced that the
ASX now supports voice services on WiFi telephones.

We continue to add to our competitive advantage and extend our market position.
Sonus' core voice solutions being delivered today are robust and field-proven,
incorporating more than 5 years of production experience in some of the world's
largest networks. We are leveraging our technology to rapidly expand into the
access and wireless markets. Our technology, experience and customer
relationships distinguish Sonus from those whose solutions are based on legacy
technology or have yet to be deployed in a scale production network. Our
technology lead gives us a central position in the market that we are excited to
extend.

The important progress we made during the first half of 2004 occurred while the
company was undergoing a very demanding and detailed review of its historical
financial statements and I am extremely pleased that the Sonus team remained
focused on building its position in the market during this critical period. As
testament to our leadership position, independent industry analysts recognized
Sonus as the market leader in several segments of the carrier voice over IP
equipment market for the first quarter of 2004.

Let's turn now to the market overall. The voice over IP market is evolving
rapidly. We are at an important point in the development of the market, as the
activity level among carriers has increased over the past year. These carriers
are being driven by important developments in the industry that will continue to
have a profound effect on the overall telecommunications market.

Never before has broadband been as widely accessible as it is today. More than
21% of the households in the United States now have access to broadband and this
rate is higher still in many geographies outside the US. This, combined with
changes in the regulatory environment, is intensifying service providers' focus
on voice over IP solutions. Unlike the major voice technology shifts in the
past, the shift to a packet voice architecture is truly transformational and has
the potential to completely redefine the industry.

It is clear that the competitive battle among the service providers has moved to
a new level. During the first half of 2004, we have already seen announcements
from the largest carriers outlining their voice over IP services for both
businesses and consumers. Now many of the incumbent carriers are deploying voice
over IP solutions in their long-distance networks and are beginning to deliver
voice over IP services on their local networks. These carriers are leveraging
their existing data networks to fend off the competitive carriers and cable
operators with bundled packages that include voice, video and data.

                                       4


Additionally, with the recent rulings by government regulators, the competitive
carriers, MSOs and IXCs are redefining their strategies for delivering telephony
services to consumers. Our deployment with AT&T is an important example of how
these carriers can capitalize on their existing data networks with the addition
of voice over IP solutions.

But this shift isn't occurring in the United States alone. Some regions in Asia
have broadband penetration rates that are meaningfully higher than in the U.S.
These were the first regions to implement voice over broadband and service
providers in these regions are continuing to build out their networks. Our focus
at Sonus has been to accelerate this development in the market with solutions
that enable consumer and business services. As we reported to you a few weeks
ago, NTT and Softbank Broadband both continue to build out their voice over
broadband networks with a Sonus solution.

We are at an inflection point in the market which represents an exciting
opportunity for Sonus. There are clear and immediate growth drivers for Sonus'
business. The trunking market is continuing to expand, the access market is just
beginning to unfold and the wireless market is starting to move to voice over
IP. Sonus is uniquely positioned to capitalize on this market shift. We have
been solely focused on the development of voice over IP networks since our
inception. The reliability and scalability of our solutions have been proven,
carrying 8.5 billion minutes per month of customer traffic in wireline and
wireless networks globally. Our belief is that with relentless execution and
continual focus, Sonus will become a predominant force in the telecommunications
industry.

So, in summary, the second quarter was a strong quarter for Sonus and we
executed on many fronts. We are continuing to build on the momentum we
established last year and are further expanding our position in this exciting
market. There are important growth drivers fueling the adoption of Sonus'
solutions by carriers around the world. Our company has emerged from a
challenging phase with a strong financial position and a growing business. I
want to once again thank our customers, partners, shareholders and employees for
their continued support. We accomplished a tremendous amount during the first
half of 2004 and I look forward to updating you on our progress as we go through
the remainder of the year.

Let me now ask Bert to review the financial performance of the Company.  Bert?

                                       5


Bert Notini, president and chief operating officer:

Thank you Hassan and good morning everyone.

Starting with the income statement, our second quarter revenue was $42.4
million, up 16% sequentially from the $36.5 million we reported in the first
quarter. Qwest Communications, AT&T Wireless and Volo Communications each
contributed at least 10% of our revenue during the quarter. In total, these
customers comprised approximately 48% of our Q2 revenue. To give you another
perspective on our customer concentration, our top 5 customers represented 60%
of our revenue in the second quarter compared to 80% in Q1. We derived revenue
from a total of 37 customers this quarter, as compared to 35 in the first
quarter.

Service revenue for the quarter was $11.8 million, compared to $10.3 million in
the first quarter.

Revenue from our international customers represented 13% of the total for the
second quarter, compared to the 29% reported in the first quarter, resulting in
20% for the first half of 2004. The lower percentage of international revenue on
a sequential basis reflects the uneven ordering pattern of our customers, as
well as the conversion of those orders to revenue. We are pleased that our
European customers in the second quarter, including T-Systems, the international
division of Deutsche Telekom, were meaningful contributors to our international
revenue. We believe there is a significant opportunity for us to grow our
business outside of the United States over time and continue to extend our brand
to a diverse set of international markets.

Gross margin for the second quarter was 67.1% of revenue, up sequentially from
66.1% in Q1. This performance exceeds our long-term model of 58 to 62%,
primarily as a result of favorable product mix. For instance, similar to Q1 of
this year, software revenue in the second quarter was proportionately higher
than historical levels and carries a higher gross margin. There was also a
positive impact to gross margin in the second quarter resulting from the sale of
inventory previously written down of approximately $850,000.
Looking forward, we anticipate our gross margins will trend back to our
long-term model, although we may continue to see a favorable mix again in the
third quarter.

Our operating expenses in the second quarter were $24 million, up from the $21.6
million we reported in Q1. I would note that in Q2, $3.5 million of expense was
attributable to our detailed financial review and audit, as compared to $3.1
million in Q1.

From a non-cash perspective, depreciation was $1.3 million, stock-based
compensation was $136,000 and amortization of purchased intangibles was
$600,000. We expect stock-based compensation expense and amortization of
purchased intangibles for Q3 to remain at about the same levels as in Q2, while
depreciation will increase modestly as a reflection of the capital investments
we have been making to support our growth.

                                       6


R&D expense in the quarter was flat with Q1 at $8.9 million. During the first
half of 2004, we have seen an increased demand for our access and wireless
solutions. In connection with this increase in order activity, we are making
necessary investments and added engineers at the end of Q2. From a timing
perspective, these investments will be fully reflected in our R&D expense in Q3.

Sales and marketing expense was $8.6 million in Q2, compared to $6.9 million in
Q1, with the increase largely driven by sales commissions, trade show activity
and evaluation inventory shipped to customers and prospects.

G&A expense was $5.7 million in Q2, compared to the $4.8 million we reported in
Q1. Our increased G&A expense during the quarter reflects $500,000 related to an
increase in the renewal premium for our directors and officers insurance that
occurred on May 31, 2004. It is important to note that in each of the next three
quarters our G&A expense will reflect $1.7 million for amortization of insurance
premiums paid in the second quarter. In the third quarter, we will continue to
experience some of the unusual expenses we have seen during Q1 and Q2, albeit at
a somewhat lower level. On the other hand, we are making investments in our
operations and controls environment that will add to our normalized run rate
level over time.

Q2 interest income, net of interest expense, was $770,000, compared to $643,000
in Q1. The increase reflects higher yields on the mix of our cash portfolio.

As to income taxes, in the near term we expect to provide for and pay de minimus
income taxes related to jurisdictions outside the US and minimum amounts due to
state and federal governments. We do not expect our effective tax rate to be
meaningful due to our net operating loss carry forwards, which coming into this
year amounted to approximately $190 million for federal income tax purposes.

Regarding share count, we ended the second quarter with fully diluted shares
used for EPS calculations of 250 million shares, down 5 million shares from the
previous quarter. The share count is lower in Q2 than Q1 as a result of the
effect that our average share price has on the calculation of diluted shares.

Taking all of this together, we are pleased that during this period when Sonus
was completing its financial review, we remained profitable on a GAAP basis. In
the second quarter, we increased our profitability to $4.9 million, or $0.02 per
share, compared to a profit of $3.0 million, or $0.01 per share in Q1.

We ended the quarter with 471 employees, reflecting an increase of approximately
8% from where we were at the end of Q1. Of these additions, 80% were in our
sales, R&D and service organizations.

Now let's turn to the balance sheet, which continues to be very strong.

                                       7


We ended the second quarter with cash, cash equivalents and marketable
securities of $303.6 million. This is down slightly from our Q1 balance due to
payments related to our financial review and audit as well as investments in
working capital, including the payment for our insurance premium of $6.8
million.

Our accounts receivable were $31.9 million, with unearned receivables of $16.2
million. As a reminder, our unearned receivables balance reflects the portion of
our deferred revenue for which we have not yet received payment. Our DSOs on our
earned receivables balance was 34 days. If you were to include unearned
receivables, our DSO for the second quarter was 68 days.

We ended the quarter with $20.2 million of inventory, up from the $15.3 million
reported in Q1, reflecting increased sales activity. I would note that more than
half of our net inventory is associated with deferred revenue and has been
shipped to our customers.

Our total deferred revenue decreased slightly this quarter to $93 million from
$94.8 million in Q1 as certain billings included in the Q1 balance were
recognized as revenue in the second quarter, largely offset by new deferred
revenue from some new customer shipments. The long-term portion of our deferred
revenue was essentially flat at $30.1 million as compared to the $29.5 million
we reported in Q1. The current portion of our deferred revenue was $62.9
million, compared to $65.2 million in Q1. As a reminder, we now are recording
deferred revenue at the time the customer is billed pursuant to a contractual
right and collection is probable rather than when we receive payment, which
provides you with greater visibility to our pre-revenue business cycle.

We used $2.2 million in cash from operations during the second quarter. CAPEX
during the quarter was $2.1 million.

Turning now to the third quarter. We extended the momentum we experienced in the
first quarter into Q2 to deliver a strong first half of 2004 for Sonus. Carriers
around the world continued to deploy our solutions in the trunking and access
portions of their networks and we successfully converted a number of our
shipments into revenue. Additionally, in the wireless market, we have seen
wireless operators adopting Sonus' trunking solutions and our partnership with
Motorola is proceeding on track.

We nonetheless are mindful that a great many of our customer transactions arise
from large contractual arrangements with multiple elements under which the exact
dates when our billings will convert into revenue are uncertain. We added new
billings to our deferred revenue balance in the second quarter as our business
expanded and we are working steadily to convert these to revenue while we make
new shipments in the third quarter. Balancing these factors, we believe the
drivers of our business during the first half of 2004 will continue into the
second half; however, we are going to refrain from providing specific revenue or
earnings guidance for the third quarter.

                                       8


Looking at the second half of 2004 as a whole, the market opportunity presented
by the transition to packet voice is significant and we are at an exciting point
in the market's development as more and more of the large incumbent carriers
adopt packet voice for their future network deployments. While we are proud that
the number of these carriers selecting Sonus has been growing, it is important
to keep in mind the timescales involved in these complex network deployments.
The transformation of the world's networks to voice over IP is a fundamental
opportunity that will play out over an extended period of time. We are working
diligently at Sonus to lead the market and extend our competitive position.

With that, let's open the call up to questions.