2.20.1 Message WaitingMultiple Subscriber Number (MSN) Ringing Service• 18.2 PBX Configuration—[10-2] CO & Incoming Call—DIL Table & Port Settings—DDI / DID / TIE / MSN– Distribution Method– DDI/DID/TIE/MSN—Remove Digit– DDI/DID/TIE/MSN—Additional Dial• 18.4 PBX Configuration—[10-4] CO & Incoming Call—MSN TableFeature Guide References2.1.1.4 Multiple Subscriber Number (MSN) Ringing ServiceMusic on Hold• 10.2 PBX Configuration—[2-2] System—Operator & BGM• 10.11.1 PBX Configuration—[2-11-1] System—Audio Gain—Paging/MOH– Internal MOH—MOH1-2 (Music On Hold 1-2)Feature Guide References2.13.4 Music on HoldNetwork Direct Station Selection (NDSS)• 9.26 PBX Configuration—[1-1] Configuration—Slot—Port Property - BRI Port—ISDN CO— NetworkingData Transfer• 9.27 PBX Configuration—[1-1] Configuration—Slot—Port Property - PRI Port—CO Setting— NetworkingData Transfer• 10.7.1 PBX Configuration—[2-7-1] System—Class of Service—COS Settings—Manager— Manager• 12.1.4 PBX Configuration—[4-1-4] Extension—Wired Extension—Flexible Button– Type– Dial (for NDSS)• 12.1.6 PBX Configuration—[4-1-6] Extension—Wired Extension—NDSS Link Data - Send• 12.2.3 PBX Configuration—[4-2-3] Extension—Portable Station—Flexible Button– Type– Dial (for NDSS)• 12.2.4 PBX Configuration—[4-2-4] Extension—Portable Station—NDSS Link Data - Send• 17.2 PBX Configuration—[9-2] Private Network—Network Data Transmission• 17.3 PBX Configuration—[9-3] Private Network—Network Operator (VoIP)• 17.4 PBX Configuration—[9-4] Private Network—NDSS Key TableFeature Guide References4.3.5.1 Network Direct Station Selection (NDSS)Network ICD Group• 10.9 PBX Configuration—[2-9] System—System Options—Option 4– Send CLIP of CO Caller—when call is forwarded to CO– Send CLIP of Extension Caller—when call is forwarded to COFeature Guide References4.3.6 Network ICD Group908 PC Programming ManualFeature Programming References