sgsn/doc: Add IPA default parameters
This commit adds the default protocol identifiers that should be used
for GSUP by the IPA protocol.
Sponsored-by: On-Waves ehf
diff --git a/openbsc/doc/sgsn-remote-protocol.txt b/openbsc/doc/sgsn-remote-protocol.txt
index 7ca9094..6564471 100644
--- a/openbsc/doc/sgsn-remote-protocol.txt
+++ b/openbsc/doc/sgsn-remote-protocol.txt
@@ -21,6 +21,12 @@
messages to/from real MAP messages that can be used to directly communicate
with an HLR.
+2.1. Using IPA
+
+By default, the following identifiers should be used:
+ - IPA protocol: 0xee (OSMO)
+ - IPA OSMO protocol extension: 0x05
+
2. Procedures
2.1. Authentication management