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In digital cellular systems such as iDEN, USDC, CDMA, GSM and JDC, PSTN modems can not be connected directly to the MS due to voice compres- sion in the network.
Motorola Inc. November 1996
English (United States)
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8 MolylRoLA Technical Developments
TWO STAGES DIALING IN A DIGITAL RADIO NElWORK
by Ed Benyukhis, Barry Chan and Rod Averbuch
PROBLEM DESCRIPTION: sion in the network.
In digital cellular systems such as iDEN, USDC, Therefore, a gateway (IWP) is implemented to CDMA, GSM and JDC, PSTN modems can not be gateway between the PSTN audio modems and the connected directly to the MS due to voice compres- digital network.
A credit card calling is a popular service that In iDEN the MSC is able to perhorm only one enables you to call a remote PSTN destination stage calling using the number from the mobile through an 800 server. The server will ask you for the credit card number and will rout you back to
DTAP message. Therefore, credit card calling is not currently available in this network.
the network. Your credit card will be charged for the call.
0 Motorola. 1°C. 1996 I31 November 1996
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Page 2 of 2
m -LA Technical Developments
* parse the first number 1800.. mx~~z..~.,aw '~~DTAf'~=we~th
the fin% number and DM bit on . Establish data connection
+>+ after traffic connectlon ccs >>> after traffic connection CC<
0 send the rest of the number with modifier using in band message (traffic)
* provide the modem with the rest of the dial strlna * modem peiorms second stage dialing
. Dial the server number . Data modiiier indication to IWF