add a gprs example; from stuart henderson

ok henning

src/etc/ppp/ppp.conf.sample

@@ -4,7 +4,7 @@
 #
 #	  Originally written by Toshiharu OHNO
 #
-# $OpenBSD: ppp.conf.sample,v 1.21 2002/06/09 06:15:15 todd Exp $
+# $OpenBSD: ppp.conf.sample,v 1.22 2006/07/12 07:46:41 jmc Exp $
 #
 #################################################################
 
@@ -101,6 +101,23 @@ ondemand:
  add default HISADDR
  enable dns
 
+# To connect via a GPRS device (e.g. a mobile phone), it's often
+# necessary to set the access-point name (in this case 'internet')
+# which requires quotes in the dial string. This section shows
+# the escaping required.
+#
+gprs:
+ set device /dev/cuaU0
+ set dial "ABORT ERROR ABORT BUSY ABORT NO\\sCARRIER TIMEOUT 5 \
+           \"\" ATZ OK-ATZ-OK AT+CGDCONT=1,\\\"IP\\\",\\\"internet\\\" OK \\dATD\\T TIMEOUT 40 CONNECT"
+ set phone "*99#"
+ set speed 115200
+ set login
+ set timeout 0
+ set ifaddr 10.0.0.1/0 10.0.0.2/0 255.255.255.0 0.0.0.0
+ add default HISADDR
+ enable dns
+
 #                          Example segments
 #
 # The following lines may be included as part of your configuration