18 Sep
2006
18 Sep
'06
7:03 p.m.
Does anybody have samples of using LCR strip and prefix? I've tried
configuring it for an ITSP that wants US numbers to be 10-digits and
international calls to be prefixed with 011. I keep these numbers in
E.164 format, so, for example:
+12128543754 should have the ruri rewritten to: 2128543754
and +44123456789 should become 01144123456789
Here are relevant portions of my lcr tables:
lcr routes
+--------------+----------+--------+----------+
| prefix | from_uri | grp_id | priority |
+--------------+----------+--------+----------+
| +1__________ | % | 5 | 10 |
| +1__________ | % | 7 | 20 |
| +__ | % | 8 | 20 |
| +__ | % | 6 | 10 |
lcr gateways (edited to fit and hide details:-)
+-----------+---------+------+-----+-----+--------+-------+--------+
| gw_name | ip | port | uri_| tran| grp_id | strip | prefix |
+-----------+---------+------------+-----+--------+-------+--------+
| prov1-us | x.x.x.x | 5060 | 1 | 1 | 5 | 2 | |
| prov1-int | x.x.x.x | 5060 | 1 | 1 | 6 | 1 | 011 |
| voip1-int | y.y.y.y | 5060 | 1 | 1 | 7 | 1 | 011 |
| voip1-us | y.y.y.y | 5060 | 1 | 1 | 8 | 2 | |
openser.cfg snippet (our internal dialplan has 93 for outside line):
xlog("L_INFO","route[4]: SIP-to-PSTN call from <$fu> to
<$tu>
routed\n");
if (uri=~"^sip:931") {
subst_user('/^931/+1/'); # rewrite to E.164
subst('/^(To:[^0-9]*)931(.*)$/\1+1\2/'); # rewrite to E.164
}
if (uri=~"^sip:93011") {
subst_user('/^93011/+/'); # rewrite to E.164
subst('/^(To:[^0-9]*)93011(.*)$/\1+\2/'); # rewrite to E.164
}
xlog("L_INFO","route[4]: SIP-to-PSTN r-uri is now
<$ru>\n");
# rewrite callee's 5-digit extensions to +121285.....
if !((isflagset(6) && !isflagset(4)) || isflagset(5)) {
subst('/^(From:.*<sip:)([134][0-9]{4}@)/\1+121285\2/');
subst('/^(Remote-Party-ID:.*<sip:)([134][0-9]{4}@)/\1+121285\2/');
}
t_on_failure("4"); # if gateway unavail go to 4
if (!next_gw()) {
sl_send_reply("503", "Service not available - No gateways");
return;
};
xlog("L_INFO","route[4]: SIP-to-PSTN after next_gw() r-uri is now
<$ru>\n");
# Cookbook does a forward. I think we do a stateful t_relay which
will handle
# e.g. TCP/UDP or v6->v4 conversion as needed.
if (isflagset(18))
{ #call fwd enabled
append_branch();
}
if (!t_relay()) {
sl_reply_error();
};
xlog("L_INFO","Fell through route[4]: $si: $rm From <$fu> To
<$tu>\n");
} # end of route[4]
The observed behavior is that the host part gets rewritten correctly (to
x.x.x.x) but the user part does not get stripped and/or prefixed.
Any help would be appreciated.
/a