chapters/mncc: Update the wording to be less confusing and more up-to-date

Change-Id: Ic8876509878e565f140508dc2e3494b0e21c566c
---
M common/chapters/mncc.adoc
1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/common/chapters/mncc.adoc b/common/chapters/mncc.adoc
index 3c67998..e897294 100644
--- a/common/chapters/mncc.adoc
+++ b/common/chapters/mncc.adoc
@@ -56,10 +56,11 @@
 to disable the internal MNCC handler and specify the MNCC socket path in
 the configuration file.
 
-At the time of this writing, the only external application implementing the
-MNCC interface compatible with the Osmocom MNCC socket is `lcr`, the Linux Call
-Router. More widespread integration of external call routing is available via
-the OsmoSIPConnector.
+At the time of this writing, there are only two known open source applications implementing the
+MNCC interface compatible with the Osmocom MNCC socket:
+
+* historically `lcr`, the Linux Call Router (support for modern MNCC protocol versions may be missing)
+* `osmo-sip-connector`, the more up-to-date integration of external call routing by translating MNCC into a SIP trunk towards an external SIP PBX / switch.
 
 
 === DTMF considerations

