diff --git a/dmtree/tr104/servicesvoiceservicecalllog.c b/dmtree/tr104/servicesvoiceservicecalllog.c
index 8a0262e0..86627f7b 100644
--- a/dmtree/tr104/servicesvoiceservicecalllog.c
+++ b/dmtree/tr104/servicesvoiceservicecalllog.c
@@ -229,7 +229,7 @@ DMLEAF tServicesVoiceServiceCallLogSessionParams[] = {
 /* PARAM, permission, type, getvalue, setvalue, bbfdm_type*/
 {"Duration", &DMREAD, DMT_UNINT, get_ServicesVoiceServiceCallLog_Duration, NULL, BBFDM_BOTH},
 {"Start", &DMREAD, DMT_TIME, get_ServicesVoiceServiceCallLog_Start, NULL, BBFDM_BOTH},
-{"SessionID", &DMREAD, DMT_UNINT, get_ServicesVoiceServiceCallLog_SessionId, NULL, BBFDM_BOTH},
+{"SessionID", &DMREAD, DMT_STRING, get_ServicesVoiceServiceCallLog_SessionId, NULL, BBFDM_BOTH},
 {0}
 };
 
diff --git a/dmtree/vendor/iopsys/tr104/servicesvoiceservicecalllog.c b/dmtree/vendor/iopsys/tr104/servicesvoiceservicecalllog.c
index 0a94bfd4..14d4e679 100644
--- a/dmtree/vendor/iopsys/tr104/servicesvoiceservicecalllog.c
+++ b/dmtree/vendor/iopsys/tr104/servicesvoiceservicecalllog.c
@@ -151,7 +151,7 @@ static int get_ServicesVoiceServiceCallLog_Dst_PeakJitter(char *refparam, struct
 /* *** Device.Services.VoiceService.{i}.CallLog.{i}. *** */
 DMLEAF tIOPSYS_VoiceServiceCallLogParams[] = {
 /* PARAM, permission, type, getvalue, setvalue, bbfdm_type*/
-{BBF_VENDOR_PREFIX"SIPSession-ID", &DMREAD, DMT_UNINT, get_ServicesVoiceServiceCallLog_SessionId, NULL, BBFDM_BOTH},
+{BBF_VENDOR_PREFIX"SIPSession-ID", &DMREAD, DMT_STRING, get_ServicesVoiceServiceCallLog_SessionId, NULL, BBFDM_BOTH},
 {BBF_VENDOR_PREFIX"SIPIPAddress", &DMREAD, DMT_STRING, get_ServicesVoiceServiceCallLog_SipIpAddress, NULL, BBFDM_BOTH},
 {BBF_VENDOR_PREFIX"SIPResponseCode", &DMREAD, DMT_UNINT, get_ServicesVoiceServiceCallLog_SipResponseCode, NULL, BBFDM_BOTH},
 {0}