[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/pppd/scripts/callback b/ap/app/pppd/scripts/callback
new file mode 100644
index 0000000..1c3d3aa
--- /dev/null
+++ b/ap/app/pppd/scripts/callback
@@ -0,0 +1,77 @@
+#!/bin/sh
+###################################################################
+#
+# Script to dial the remote system, negotiate the connection, and send
+# it the id. Then wait for the modem to disconnect. Reset the modem
+# to answer mode and wait for the system to call back.
+#
+# The telephone number and modempass are used when establishing the
+# connection to the modem.
+#
+PHONE=555-1212
+MODEMPASS=modem_identifier
+#
+# Once the modem calls back, the account name and password are used for
+# a UNIX style login operation.
+#
+ACCOUNT=my_account_name
+PASSWORD=my_password
+
+###################################################################
+#
+# Step 1. Dial the modem and negotiate the initial dialog.
+# note: the modem is configured to ignore loss of DCD at this point.
+# it is important that this be performed because the loss of DCD
+# will normally prevent system from working since 'modem' is used
+# for pppd.
+#
+# The script is terminated normally when the carrier is lost.
+#
+chat -v \
+ TIMEOUT 3 \
+ ABORT '\nBUSY\r' \
+ ABORT '\nNO ANSWER\r' \
+ ABORT '\nRINGING\r\n\r\nRINGING\r' \
+ '' AT \
+ 'OK-+++\c-OK' 'AT&C0&D2S0=0H0' \
+ TIMEOUT 30 \
+ OK ATDT$TELEPHONE \
+ CONNECT '' \
+ assword: $MODEMPASS \
+ "\nNO CARRIER\r"
+
+if [ "$?" = "0" ]; then
+
+###################################################################
+#
+# Step 2. Wait for the call back from the remote. This will wait for at most
+# 30 seconds for the call back should the first attempt fail or
+# something happen with the callback logic at the remote.
+#
+# note: when the callback occurs, the DCD setting is re-enabled.
+#
+# If some voice call should happen during this period, the system will
+# answer the telephone and then hang up on them. I realize that this is
+# rude, but there is little that this script can do.
+#
+ chat -v \
+ TIMEOUT 30 \
+ ABORT '\nVOICE\r' \
+ '\nRING\r' 'AT&C1A' \
+ CONNECT '' \
+ TIMEOUT 10 \
+ ogin:--ogin: $ACCOUNT \
+ TIMEOUT 45 \
+ assword: $PASSWORD
+
+ if [ "$?" = "0" ]; then
+ exit 0
+ fi
+fi
+
+###################################################################
+#
+# The script has failed. Terminate the connection mode.
+#
+chat -v TIMEOUT 3 "" AT 'OK-+++\c-OK' 'AT&C1&D2S0=0H0' OK
+exit 1