Exhibit 99.01

    SAFE HARBOR FOR FORWARD-LOOKING STATEMENTS UNDER THE PRIVATE SECURITIES
                         LITIGATION REFORM ACT OF 1995

                       CERTAIN CAUTIONARY STATEMENTS AND
                                 RISK FACTORS



     CSG Systems International, Inc. and its subsidiaries (collectively, the
Company) or their representatives from time to time may make or may have made
certain forward-looking statements, whether orally or in writing, including
without limitation, any such statements made or to be made in the Management's
Discussion and Analysis of Financial Condition and Results of Operations
contained in its various SEC filings or orally in conferences or
teleconferences. The Company wishes to ensure that such statements are
accompanied by meaningful cautionary statements, so as to ensure to the fullest
extent possible the protections of the safe harbor established in the Private
Securities Litigation Reform Act of 1995.

     ACCORDINGLY, THE FORWARD-LOOKING STATEMENTS ARE QUALIFIED IN THEIR ENTIRETY
BY REFERENCE TO AND ARE ACCOMPANIED BY THE FOLLOWING MEANINGFUL CAUTIONARY
STATEMENTS IDENTIFYING CERTAIN IMPORTANT FACTORS THAT COULD CAUSE ACTUAL RESULTS
TO DIFFER MATERIALLY FROM THOSE IN SUCH FORWARD-LOOKING STATEMENTS.

     This list of factors is likely not exhaustive. The Company operates in a
rapidly changing and evolving business involving the converging communications
markets, and new risk factors will likely emerge. Management cannot predict all
of the important risk factors, nor can it assess the impact, if any, of such
risk factors on the Company's business or the extent to which any factor, or
combination of factors, may cause actual results to differ materially from those
in any forward-looking statements.

     ACCORDINGLY, THERE CAN BE NO ASSURANCE THAT FORWARD-LOOKING STATEMENTS WILL
BE ACCURATE INDICATORS OF FUTURE ACTUAL RESULTS, AND IT IS LIKELY THAT ACTUAL
RESULTS WILL DIFFER FROM RESULTS PROJECTED IN FORWARD-LOOKING STATEMENTS AND
THAT SUCH DIFFERENCES MAY BE MATERIAL.


RELIANCE ON CCS

     The Company derived approximately 78.3% and 78.0% of its total revenues
from its primary product, Communications Control System, and related products
and services (collectively, "CCS") in the years ended December 31, 1999 and
1998, respectively. CCS is expected to provide the substantial majority of the
Company's total revenues in the foreseeable future.

     The Company continues to develop new products and services to address the
evolving needs of its new and existing clients as they roll out new product
offerings and enter new markets. A substantial portion of the Company's new
products and services require enhancements to the core functionality of CCS.
There is an inherent risk of technical problems in maintaining and operating CCS
as its complexity is increased. The Company's results will depend upon continued
market acceptance of CCS, as well as the Company's ability to continue to adapt,
modify, maintain, and operate CCS to meet the changing needs of its clients
without sacrificing the reliability or quality of service. Any reduction in
demand for CCS would have a material adverse effect on the financial condition
and results of operations of the Company.


AT&T RELATIONSHIP

Contract Rights and Obligations
- -------------------------------

     The AT&T Contract includes minimum financial commitments by AT&T over the
15-year life of the contract, and includes exclusive rights for the Company to
provide customer care and billing products and services for


AT&T's offerings of wireline video, all Internet/high speed data services,
residential wireline telephony services, and print and mail services. Since
execution of the AT&T Contract in September 1997 through December 31, 1999, the
Company has successfully converted approximately 11 million AT&T cable
television customers onto its system, bringing the total of AT&T customers on
the Company's system to approximately 14 million.

     The AT&T Contract provides certain performance criteria and other
obligations to be met by the Company. The Company is subject to various remedies
and penalties if it fails to meet the performance criteria or other obligations.
The Company is also subject to an annual technical audit to determine whether
the Company's products and services include innovations in features and
functions that have become standard in the wireline video industry. If an audit
determines the Company is not providing such an innovation and it fails to do so
in the manner and time period dictated by the contract, then AT&T would be
released from its exclusivity obligation to the extent necessary to obtain the
innovation from a third party.

     To fulfill the AT&T Contract and to remain competitive, the Company
believes it will be required to develop new and advanced features to existing
products and services, as well as new products and services, all of which will
require substantial research and development and implementation and operational
aptitude. AT&T has the right to terminate the AT&T Contract in the event of
certain defaults by the Company. To date, the Company believes it has complied
with the terms of the contract. The termination of the AT&T Contract or of any
of AT&T's commitments under the contract would have a material adverse effect on
the financial condition and results of operations of the Company.

Business Activities and Dependence On AT&T
- ------------------------------------------

     AT&T completed its merger with TCI in March 1999 and has consolidated the
TCI operations into AT&T Broadband. During the year ended December 31, 1999 and
1998, revenues from AT&T and affiliated companies represented approximately
50.5% and 37.4% of total revenues, respectively. The Company expects a similar
percentage of its total revenues to be generated from AT&T in 2000.

     AT&T began its efforts to provide convergent communications services in
several United States cities during 1999 and expects to continue these efforts
in 2000. The Company is working closely with AT&T to provide customer care and
billing services to customers in those cities. The convergence of video,
telephony and Internet services in the residential market is still in its
infancy. As a result, the degree to which converged, broadband services meet
with consumer acceptance and capture significant market share is speculative.
Further, there may be customer care and billing needs of the broadband consumer
that are not foreseen by the Company, or the Company's technological solutions
may prove unable to meet the new and unique needs of the converging
communications markets. The Company expects to continue performing successfully
under the AT&T Contract, but its failure to do so would have a material adverse
effect on the financial condition and results of operations of the Company.

     Historically, a substantial portion of the Company's revenue growth
resulted from the sale of software and professional services to AT&T, both of
which are in excess of the minimum financial commitments included in the
contract. There can be no assurance that the Company will continue to sell
products and services to AT&T in excess of the minimum financial commitments
included in the contract.

AT&T's Planned Merger with MediaOne
- -----------------------------------

     AT&T and MediaOne have agreed to merge, with AT&T being the surviving
entity. MediaOne has approximately 5.2 million cable television customers, and
approximately 1.0 million of these customers are currently being processed on
the Company's system. The Company is hopeful that it will have the opportunity
to convert the remaining MediaOne customers onto its system soon after the
acquisition is complete. There are a number of uncertainties concerning the
transaction, however, including its timing and any structure, operational or
other limitations that may be imposed by governmental authorities. Should the
transaction not be consummated, should it be significantly delayed or its
structure or operational authority be altered materially, it may have a material
adverse impact upon the company's ability to sustain its growth in the wireline
video customer care and billing market.

RENEWAL OF TIME WARNER CONTRACTS


     During the years ended December 31, 1999 and 1998, revenues from Time
Warner represented approximately 10.2% and 14.1% of total revenues,
respectively. The Company provides services to Time Warner under multiple,
separate contracts with various Time Warner affiliates. These contracts are
scheduled to expire on various dates. The failure of Time Warner to renew
contracts representing a significant part of its business with the Company would
have a material adverse effect on the financial condition and results of
operations of the Company. America Online, Inc. ("AOL") and Time Warner have
announced their intention to merge their companies. It would be premature to
predict the impact, if any, the successful consummation of this transaction
would have on the financial condition or results of operations of the Company.


CONVERSION TO THE COMPANY'S SYSTEMS

     The Company's ability to convert new client sites to its customer care and
billing systems on a timely and accurate basis is necessary to meet the
Company's contractual commitments and to achieve its business objectives.
Converting multiple sites under the schedules required by contracts or business
requirements is a difficult and complex process. One of the difficulties in the
conversion process is that competition for the necessary qualified personnel is
intense and the Company may not be successful in attracting and retaining the
personnel necessary to complete conversions on a timely and accurate basis. The
inability of the Company to perform the conversion process timely and accurately
would have a material adverse effect on the results of operations of the
Company.


INDUSTRY CONSOLIDATION AND DEPENDENCE ON CABLE TELEVISION AND DBS INDUSTRIES

     The Company's business is concentrated in the cable television and Direct
Broadcast Satellite ("DBS") industries, making the Company susceptible to a
downturn in those industries. During the years ended December 31, 1999 and 1998,
the Company derived 75.8% and 77.7%, and 15.5% and 13.0% of its total revenues
from companies in the U.S. cable television and U.S. and Canadian DBS
industries, respectively. A decrease in the number of customers served by the
Company's clients, loss of business due to non-renewal of client contracts,
industry consolidation, and/or changing consumer demand for services would
adversely effect the results of operations of the Company.

     There can be no assurance that new entrants into the cable television
market will become clients of the Company. Also, there can be no assurance that
cable television providers will be successful in expanding into other segments
of the converging communications markets. Even if major forays into new markets
are successful, the Company may be unable to meet the special billing and
customer care needs of that market. The cable television industry is undergoing
significant ownership changes at an accelerated pace. One facet of these changes
is that cable television providers are consolidating, decreasing the potential
number of buyers for the Company's products and services. Currently, seven
providers account for 85% of the U.S. cable television market and two providers
account for almost the entire U.S. DBS market. The Company processes at least a
portion of the customers for five of the seven cable television providers, and
for both of the DBS providers. For the year ended December 31, 1999,
approximately 83% of the Company's total revenues were generated from companies
either under the control of, or expected to come under the control of, these
seven providers. Consolidation in the industry may put at risk the Company's
ability to leverage its existing relationships. Should this consolidation result
in a concentration of cable television customer accounts being owned by
companies with whom the Company does not have a relationship, or with whom
competitors are entrenched, it could negatively effect the Company's ability to
maintain or expand its market share, thereby adversely effecting the results of
operations.


NEW PRODUCTS AND RAPID TECHNOLOGICAL CHANGE

     The market for customer care and billing systems is characterized by rapid
changes in technology and is highly competitive with respect to the need for
timely product innovations and new product introductions. The Company believes
that its future success in sustaining and growing the annual revenue per
customer account depends upon continued market acceptance of its current
products, including CCS, and its ability to enhance its current products and
develop new products that address the increasingly complex and evolving needs of
its clients. Substantial research and development will be required to maintain
the competitiveness of the Company's products and services


in the market. Development projects can be lengthy and costly, and are subject
to changing requirements, programming difficulties, a shortage of qualified
personnel, and unforeseen factors which can result in delays. In addition, the
Company is typically responsible for the implementation of new products, and
depending upon the specific product, may also be responsible for operations of
the product. There is an inherent risk in the successful implementation and
operations of these products as the technological complexity increases. There
can be no assurance (i) of continued market acceptance of the Company's current
products, (ii) that the Company will be successful in the timely development of
product enhancements or new products that respond to technological advances or
changing client needs, or (iii) that the Company will be successful in
supporting the implementation and/or operations of product enhancements or new
products.


CONVERGING COMMUNICATIONS MARKETS

     The Company's growth strategy is based in large part on the continuing
convergence and growth of the cable television, DBS, telecommunications, and on-
line services markets. If these markets fail to converge, grow more slowly than
anticipated, or if providers in the converging markets do not accept the
Company's solution for combining multiple communications services for a
customer, there could be a material adverse effect on the Company's growth.


COMPETITION

     The market for the Company's products and services is highly competitive.
The Company directly competes with both independent providers of products and
services and in-house systems developed by existing and potential clients. In
addition, some independent providers are entering into strategic alliances with
other independent providers, resulting in either a new competitor, or a
competitor(s) with greater resources. Many of the Company's current and
potential competitors have significantly greater financial, marketing,
technical, and other competitive resources than the Company, and many already
have significant international operations. There can be no assurance that the
Company will be able to compete successfully with its existing competitors or
with new competitors.


ATTRACTION AND RETENTION OF PERSONNEL

     The Company's future success depends in large part on the continued service
of its key management, sales, product development, and operational personnel.
The Company is particularly dependent on its executive officers. The Company
believes that its future success also depends on its ability to attract and
retain highly skilled technical, managerial, operational, and marketing
personnel, including, in particular, additional personnel in the areas of
research and development and technical support. Competition for qualified
personnel is intense, particularly in the areas of research and development and
technical support. The Company may not be successful in attracting and retaining
the personnel it requires, which would adversely effect the Company's ability to
meet its commitments and new product delivery objectives.


VARIABILITY OF QUARTERLY RESULTS

     The Company's quarterly revenues and results, particularly relating to
software and professional services, may fluctuate depending on various factors,
including the timing of executed contracts and the delivery of contracted
services or products, the cancellation of the Company's services and products by
existing or new clients, the hiring of additional staff, new product development
and other expenses, and changes in sales commission policies. No assurance can
be given that results will not vary due to these factors. As the Company's
overall revenue grows, so too does the risk associated with meeting financial
expectations for revenue derived from its software and services offerings. As a
result, there is a proportionately increased likelihood that the Company may
fail to meet revenue and earnings expectations of the analyst community. With
the current volatility of the stock market, should the Company fail to meet
analyst expectations by even a relatively small amount it would most likely have
a disproportionately negative impact upon the market price for the Company's
common stock.


DEPENDENCE ON PROPRIETARY TECHNOLOGY

     The Company relies on a combination of trade secret and copyright laws,
nondisclosure agreements, and other contractual and technical measures to
protect its proprietary rights in its products. The Company also holds a limited
number of patents on some of its newer products, and does not rely upon patents
as a primary means of protecting its rights in its intellectual property. There
can be no assurance that these provisions will be adequate to protect its
proprietary rights. Although the Company believes that its intellectual property
rights do not infringe upon the proprietary rights of third parties, there can
be no assurance that third parties will not assert infringement claims against
the Company or the Company's clients.


INTERNATIONAL OPERATIONS

     The Company's business strategy includes a commitment to the marketing of
its products and services internationally, and the Company has acquired and
established operations outside of the U.S. The Company is subject to certain
inherent risks associated with operating internationally. Risks include product
development to meet local requirements such as the conversion to EURO currency,
difficulties in staffing and management, reliance on independent distributors or
strategic alliance partners, fluctuations in foreign currency exchange rates,
compliance with foreign regulatory requirements, variability of foreign economic
conditions, changing restrictions imposed by U.S. export laws, and competition
from U.S.-based companies which have firmly established significant
international operations. There can be no assurance that the Company will be
able to manage successfully the risks related to selling its products and
services in international markets.


INTEGRATION OF ACQUISITIONS

     As part of its growth strategy, the Company seeks to acquire assets,
technology, and businesses which would provide the technology and technical
personnel to expedite the Company's product development efforts, provide
complementary products or services or provide access to new markets and clients.
Acquisitions involve a number of risks and difficulties, including expansion
into new geographic markets and business areas, the requirement to understand
local business practices, the diversion of management's attention to the
assimilation of acquired operations and personnel, potential adverse short-term
effects on the Company's operating results, and the amortization of acquired
intangible assets.


SYSTEM SECURITY

     The end users of the Company systems are continuously connected to the
Company's products through a variety of public and private telecommunications
networks. The Company has plans to integrate the Internet more closely into its
product offerings thereby permitting, for example, a customer to use the
Internet to review account balances, order a pay per view event or execute
similar account management functions. The Company also operates an extensive
internal network of computers and systems used to manage internal
communications, financial information, development data and the like. The
Company's product and internal communications networks and systems carry an
inherent risk of failure as a result of human error, acts of nature and
intentional, unauthorized attacks from computer "hackers." Opening up these
networks and systems to permit access via the Internet increases their
vulnerability to unauthorized access and corruption, as well as increasing the
dependency of the systems' reliability on the availability and performance of
the Internet's infrastructure. Certain system security and other controls for
CCS are reviewed annually by an independent party. The Company has recently
undergone a security review of its internal systems by an independent party, and
is currently implementing a plan intended to minimize the risk of an
unauthorized access to the networks and systems.

     The method, manner, cause and timing of an extended interruption or outage
in the Company's networks or systems is impossible to predict. As a result,
there can be no assurances that the networks and systems will not fail, nor that
the Company's business recovery plans will adequately mitigate any damages
incurred as a consequence. In addition, should the Company's networks or systems
be significantly compromised, it would most likely have a


material adverse effect on the operations of the Company, including its ability
to meet product delivery obligations or client expectations. Likewise, should
the Company's networks or systems experience an extended interruption or outage,
have their security compromised or data lost or corrupted, it would most likely
result in an immediate loss of revenue, as well as damaging the reputation of
the Company. Any of these events could have both an immediate, negative impact
upon the Company's short term revenue and profit expectations, as well as its
long term ability to attract and retain new clients.


PRODUCT OPERATIONS AND SYSTEM AVAILABILITY

     The Company's product operations are run in both mainframe and distributed
system computing environments, as follows:

     Mainframe Environment
     ---------------------

     CCS operates in a mainframe data processing center managed by FDC (the "FDC
     Data Center"), with end users dispersed throughout the United States and
     Canada. These services are provided under an agreement with FDC that is
     scheduled to expire in December 2001. The Company believes it could obtain
     mainframe data processing services from alternative sources, if necessary.
     The Company has a business recovery plan as part of its agreement with FDC
     should the FDC Data Center suffer an extended business interruption or
     outage. This plan is tested on an annual basis.

     Distributed Systems Environment
     -------------------------------

     The Company also operates certain of its new product applications in its
     own distributed systems data processing center (the "CSG Data Center") for
     the benefit of certain clients. Typically, these distributed product
     applications interface to and operate in conjunction with CCS via
     telecommunication networks. The Company is currently implementing its
     business recovery plan for the CSG Data Center. The Company has extensive
     experience in running applications within the mainframe computing platform,
     and only within the last few years, began running applications within the
     CSG Data Center. In addition, the mainframe computing environment and
     related technology is mature and has proven to be a highly reliable and
     scaleable computing platform. The distributed systems computing platform is
     not at the same level of maturity as the mainframe computing platform.

     The end users of the Company systems are continuously connected to the
Company's products through a variety of public and private telecommunications
networks, and are highly dependent upon the continued availability of the
Company's systems to conduct their business operations. Should the FDC Data
Center or CSG Data Center, or any particular product application or internal
system which is operated within the data centers, as well as the connecting
telecommunications networks, experience an extended business interruption or
outage, it could have an immediate impact to the business operations of the
Company's clients, which could have a material adverse effect on the financial
condition and results of operations of the Company.


YEAR 2000

     The Company's business is dependent upon various computer software programs
and operating systems that utilize dates and process data beyond the year 2000.
If the actions taken by the Company to mitigate its risks associated with the
year 2000 are inadequate, there could be a material adverse effect on the
financial condition and results of operations of the Company. See "Management's
Discussion and Analysis of Financial Condition and Results of Operations" for
additional discussion of the Company's efforts to address the year 2000 risks.