Asterisk don't have a maximum credit time parameter as this is normally
stored in a MySQL database. You can set the maximum calling time in the
dial command like this to restrict to one hr.<br>
<br>
Dial("SIP/70103-dc7a", "SIP/70108|30|tTL(3600000:60000:30000)|20") <br>
<br>
If you want a compeete working framework To handle call balances and
Credit Time you can download our free Open Source software AstBill at
<a href="http://astbill.com">http://astbill.com</a>.<br>
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<br>