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-rw-r--r--serviceproviders.2.dtd8
1 files changed, 5 insertions, 3 deletions
diff --git a/serviceproviders.2.dtd b/serviceproviders.2.dtd
index 347378a..cc03238 100644
--- a/serviceproviders.2.dtd
+++ b/serviceproviders.2.dtd
@@ -34,11 +34,13 @@
<!ELEMENT visual-voicemail (standard*,
destination-number*,
- carrier-prefix)>
+ carrier-prefix?)>
<!ELEMENT standard EMPTY>
-<!ATTLIST standard type (cvvm|otmp) #REQUIRED>
-<!-- Whether the carrier supports OTMP or CVVM for Visual Voicemail -->
+<!ATTLIST standard type (cvvm|otmp|proprietary) #REQUIRED>
+<!-- Whether the carrier supports OTMP or CVVM for Visual Voicemail
+ Some carriers impliment their own proprietary standard.
+-->
<!ELEMENT destination-number (#PCDATA)>
<!-- This is the destination number to activate/deactivate Visual