PRINCIPAL CLIENTS

9 Months Ended

Sep. 30, 2016

The following table represents revenue concentration of our principal clients:



	Three Months Ended September 30,								Nine Months Ended September 30,
	2016				2015				2016				2015
	Revenue		Percentage		Revenue		Percentage		Revenue		Percentage		Revenue		Percentage
T-Mobile USA, Inc.	$	20,298	25.9	%	$	16,330	22.4	%	$	53,359	23.2	%	$	51,453	25.7	%
Sprint / United Management Co.	$	11,656	14.9	%	$	10,528	14.5	%	$	33,785	14.7	%	$	13,690	6.8	%
AT&T Services, Inc. and AT&T Mobility, LLC	$	9,194	11.7	%	$	7,422	10.2	%	$	29,416	12.8	%	$	26,232	13.1	%
Comcast Cable Communications Management, LLC	$	6,549	8.4	%	$	7,590	10.4	%	$	20,790	9.0	%	$	24,399	12.2	%

We enter into contracts and perform services with our major clients that fall under the scope of master service agreements (MSAs) with statements of work (SOWs) specific to each line of business. These MSAs and SOWs may automatically renew or be extended by mutual agreement and are generally terminable by the customer or us with prior written notice.

Effective July 1, 2011, we entered into a MSA with T-Mobile. It had an initial term of five years and automatically renews for additional one-year periods thereafter. It may be terminated by T-Mobile upon 90 days written notice.

Effective July 1, 2011, ACCENT, a business we acquired in 2015, entered into a MSA with Sprint. It had an initial term of three years and automatically renews for additional one-month periods thereafter. It may be terminated by Sprint upon 30 days written notice.

On August 8, 2016, we entered into a MSA with AT&T Services, Inc. The agreement has a term of three years from the effective date. There are a number of SOWs for several different lines of AT&T business. These SOWs expire prior to 2018.

Effective June 22, 2013, we entered into a MSA with Comcast. The agreement had an initial term of one year and automatically renews for additional one-year periods unless either party gives 90 days written notice of cancellation. The contract was renewed for the year ending June 22, 2017.

To limit credit risk, management performs periodic credit analyses and maintains allowances for uncollectible accounts as deemed necessary. Under certain circumstances, management may require clients to pre-pay for services. As of September 30, 2016, management believes reserves are appropriate and does not believe that any significant credit risk exists.

We have entered into factoring agreements with financial institutions to sell certain of our accounts receivable under non-recourse agreements. These transactions are accounted for as a reduction in accounts receivable because the agreements transfer effective control over and risk related to the receivables to the buyers. We do not service any factored accounts after the factoring has occurred. We utilize factoring arrangements as part of our financing for working capital. The aggregate gross amount factored under these agreements was $14,584 and $6,055 for the three months ended September 30, 2016 and September 30, 2015, respectively.