redbluff, there is a thread in the BlackBerry Guides Forum at:
http://www.blackberryforums.com/viewtopic.php?p=20472
It has the follwoing info:
[*]Cingular - Now has TCP/IP; No MDS hosting needed
Go to Options->TCP
APN: isp.cingular
Username:
Password: CINGULAR1
Cingular works now, but it is a little tricky to set up at Cingular first by calling them. You have to telephone Cingular and ask for these line items to be added to your Cingular bill, if it does not already show up on your Cingular bill, called "Wireless Internet Express" (WIX for short) and "Wireless Internet Express Data Connect":Quote:
WIX EXTENDED INTERNET $0.00
WIX DATA CONNECT $0.00
WRLSS INTRNT XPRS PAY PER USE $0.00
These items go by different names in some states, such as California, but essentially you need the same lineitems you would normally have for a regular cellphone for tethering it to a laptop computer. Next, you need to use the proper APN username and APN password as follows, in all uppercase, when you start the "BlackBerry Modem" connection when using Cingular:Quote:
Username:
Password: CINGULAR1
It is very important to make sure that all the WIX lineitems are already on your bill, including "Wireless Internet Express DATA CONNECT". The last line item required for tethered modem operation with Cingular. Once this is done, then there is no more port blocking anymore! If you do not need modem operation, you do not need the third line item. You may have to telephone Cingular multiple times before you reach a Customer Service Representative that understands how to add these line items.