Alaska Communications Systems Announces the Retirement of TDMA Phone Service

Alaska Communications Systems Group, Inc. (ACS) (NASDAQ:ALSK) announced today the retirement of TDMA Wireless phone service on September 30, 2007. After September 30, calls made from TDMA Wireless phones will be routed to the ACS call center for transition to the advanced CDMA network.

We encourage all ACS customers to take action prior to September 30, and upgrade their TDMA Wireless phone to a CDMA capable device, said Anand Vadapalli, ACS senior vice president of network and IT. The CDMA network has a more expansive footprint than the TDMA network and the best voice coverage, as measured by blocks and drops. The CDMA network also supports the fastest mobile data speeds in the state. All these factors underscore ACS ongoing focus on delivering the highest quality wireless service to Alaskas residents and visitors.

ACS offers customers three convenient ways to upgrade their TDMA phones:

1. Order on-line: Browse phones, plans, and features at www.acsalaska.com and email ACS about the purchase decision to info@acsalaska.com;

Or

2. Order by phone: Call 563-8000 (in Anchorage) or 1-800-808-8083 (outside Anchorage); the new phone can be mailed to customers;

Or

3. Stop by any ACS store: Pick a plan and new phone at any ACS store location.

The TDMA network is being replaced statewide by the CDMA network, a more advanced technology that includes location capabilities which fulfills safety requirements mandated by the FCC. Coverage areas expand from Alaskas North Slope to Ketchikan, with voice and data roaming available throughout the lower 48 states, Hawaii and Canada.

About Alaska Communications Systems

ACS is the leading integrated communications provider in Alaska, offering local telephone service, wireless, long distance, data, and Internet services to business and residential customers throughout the state. More information can be found on the company's website at www.acsalaska.com or at its investor site at www.alsk.com.

Contacts:

ACS Corporate Communications
Mary Gasperlin, Director, 907-297-3000
mary.gasperlin@acsalaska.com
or
Jeaneen Gill, Manager, 907-297-3000
jeaneen.gill@acsalaska.com

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