ASA model selection

[toskie9999]

Hi All

     Our company is in the process of replacing our old firewall with a Cisco ASA since our old firewall can handle only 170 concurrent users and we are expanding fast. Can I know what are the considerations when selecting from the different models of ASA currently we are debating if we should buy a 5510 or a 5520 also can I know if cisco ASA also have a limitations on concurrent users online in a lan like our old firewall. By the way we are a Call Center company(going 500 seats) so we are using VOIP(Asterisk using SIP and IAX). Thanks for the support

[Yudong Wu · Accepted solution]

5510 supports 50,000; 130,000(with security plus license) concurrent connection, 5520 supports 280,000.

You can find detail in data sheet below.

http://www.cisco.com/en/US/partner/prod/collateral/vpndevc/ps6032/ps6094/ps6120/product_data_sheet0900aecd802930c5.html