UTStarcom(UTSI) - Get Report is battling with South Korea's Curitel over the cell-phone division of Audiovox(VOXX) - Get Report, according to people familiar with the talks.

No terms of the discussions were available, but the back-and-forth heated up in recent weeks after UTStarcom put a bigger bid on the table. Analysts estimate that the handset business -- known as Audiovox Communications -- could fetch as much as $200 million. There is also a chance that other bids may be tendered or that both suitors could walk away from a deal.

Representatives of Hauppauge, N.Y.-based Audiovox and Alameda, Calif.-based UTStarcom declined to comment.

UTStarcom, which has had success selling systems for portable local phone service in China, has been looking to expand into other areas of wireless technology. Industry observers say the Audiovox deal would give UTStarcom an immediate entry into the hot code division multiple access, or CDMA, cell-phone market.

Audiovox's handset unit, which is 25% owned by Toshiba, sells phones to outfits such as




Verizon Wireless

, which is a joint venture of


(VZ) - Get Report



(VOD) - Get Report


Audiovox put the cell-phone business on the block in February, after it entered a nonbinding agreement to sell the unit to Curitel for an undisclosed amount. Audiovox then hired Jefferies & Co. to find a higher bid.

Word that UTStarcom was exploring the purchase of the Audiovox handset division was first reported in


Tech Edge

newsletter on March 16.

Audiovox distributes phones made by Toshiba and Curitel in the U.S. under the Audiovox name. Industry watchers say Audiovox offers a complete handset operation, from supply to distribution. Most important, it boasts a direct relationship with Verizon Wireless, the nation's largest cell-phone service.

Analysts note that margins on phone distribution are thin, and the handset operation would make more sense as part of a larger phone business. Audiovox could cash out on the sales at a time when cell-phone sales are reaching record-high levels, allowing the company to focus on its remaining electronics division, which includes a growing portable DVD player business.

While both Curitel and UTStarcom make their own handsets and could try to distribute directly to big telcos such as Verizon, industry experts say the long initial engagement-and-testing process makes that path perilous.

The relationship between the handset supplier and carrier is valuable. "It takes a lot of time and effort to build the phone testing and approval process," says Charter Equity Research analyst Ed Snyder. He says big players such as Verizon Wireless don't necessarily have time to start from scratch with a new vendor. "If you don't have access, you can certainly buy it," says Snyder, who has no rating on Audiovox or UTStarcom.

UTStarcom makes personal wireless access system, or PAS, networks that effectively substitute limited-range portable phones for wire-line local phone-and-Internet service. This lower-cost system has provided an alternative communication network in areas where there has been limited phone network infrastructure. UTStarcom gained a loyal following last year as investors cheered its success in finding a niche in markets such as China, where it has 45 million subscribers.

But analysts say UTStarcom's growth potential will be limited as conventional wireless services get cheaper and more widespread. UTStarcom has been searching for ways to diversify its business.

Last week, for example, UTStarcom agreed to buy


, a Vancover-based CDMA networking gearmaker, for $29 million. The deal will help UTStarcom expand its infrastructure product offering and allow it to better compete with large players such as









in the network-equipment market.

Curitel is South Korea's No. 3 cell-phone maker, behind




. The company has informally approached Verizon Wireless with the prospect of setting up a direct distribution arrangement that could start up early next year, said one person familiar with the two companies.

For the most recent quarter ended in February, Audiovox's handset unit posted a profit of $1.9 million on $240 million in revenue. The revenue number marked an 11% jump from the same period a year ago. The top-line growth came from the popularity of some of its color camera phones that were introduced in the second half of last year.