A AA Automated Attendant   G G-CO Group-CO ANI Automatic Number Identification     G-DN Group Directory Number   APT Analog Propietary Telephone   I ICD Incoming Call Distribution   ARS Automatic Route Selection     IRNA Intercept Routing-No Answer B BGM Background Music     ISDN Integrated Services Digital Network C CLI Call Line Identification   L L-CO Loop-CO   CLIP Calling Line Identification Presentation     LCS Live Call Screening   CLIR Calling Line Identification Restriction   O OGM Outgoing Message   CNIP Calling Name Identification Presentation     OHCA Off-hook Call Annoucement   CNIR Calling Name Identification Restriction     OPX Off Premise Extension   COLP Connected Line Identification Presentation   P PIN Personal Identification Number   COLR Connected Line Identification Restriction     PRI Primary Rate Interface   CONP Connected Name Identification Presentation     PS Portable Station   CONR Connected Name Identification Restriction     PT Propietary Telephone   COS Class of Service   S S-CO Single Line Telephone   CPC Calling Party Control     SLT Single Line Telephone   CS Cell Station     SMDR Station Message Detail Recording   CTI Computer Telephony Integration   T TAFAS Trunk Answer from Any Station D DID Direct Inward Dialig     TEI Terminal Endpoint Identifier   DIL Direct In Line     TRG CO Line Group   DISA Direct Inward System Access     TRS Toll Restriction   DND Do Not Disturb   U UCD Uniform Call Distribution   DPT Digital Propietary Telephone   V VM Voice Mail   DSS Direct Station Selection     VoIP Voice over Internet Protocol   DTMF Dual Tone Multi-Frequency     VPS Voice Processing System E EFA External Feature Access   X XDP eXtra Device Port F FWD Call Forwarding

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