| No | Name | Value | Package | Comment | Extension |
| 1 | C1 | 0.47uF | Radial Polyester 200VAC | Digikey 1572-1227-ND $0.66 | $ 0.66 |
| 2 | C2 | 0.1UF | --- | Digikey 399-9843-ND (bulk) $0.22 | $ 0.22 |
| 3 | C3 | 0.47uF | Radial Polyester 200VAC | Digikey 1572-1227-ND $0.66 | $ 0.66 |
| 4 | C4 | 0.1UF | --- | Digikey 399-9843-ND (bulk) $0.22 | $ 0.22 |
| 5 | C5 | 0.1UF | --- | Digikey 399-9843-ND (bulk) $0.22 | $ 0.22 |
| 6 | C6 | 0.1UF | --- | Digikey 399-9843-ND (bulk) $0.22 | $ 0.22 |
| 7 | C7 | 0.1UF | --- | Digikey 399-9843-ND (bulk) $0.22 | $ 0.22 |
| 8 | C8 | 0.33UF | --- | Digikey 399-17284-ND $0.29 | $ 0.29 |
| 9 | C9 | EXTRA | --- | ||
| 10 | CN1 | LINE 1+2 | RJ11-4 | Digikey A31405-ND $1.54 | $ 1.54 |
| 11 | CN2 | 12V INPUT | 2PIN PHOENIX SOCKET | 2POS Conn: Digikey 277-1106-ND $0.64, 2POS plug 277-1964-ND $2.02 | $ 2.66 |
| 12 | CN3 | EXT RING TRIGGER | 4PIN PHOENIX SOCK | 4POS Conn: Digikey 277-1108-ND $1.40, 4POS plug 277-1013-ND $3.79 | $ 5.19 |
| 13 | CN4 | EXT RING GEN | 4PIN PHOENIX SOCKET | 4POS Conn: Digikey 277-1108-ND $1.40, 4POS plug 277-1013-ND $3.79 | $ 5.19 |
| 14 | CN9 | INTERLINK CONNECTOR | PACKAGE: 30 PIN HEADER (2x15) | Digikey 732-5306-ND $1.64 (Interlink Cable: Digikey H3AAH-3018G-ND) | $ 1.64 |
| 15 | D1 | YELLOW LED | Line 1 Status LED | Digikey 160-1851-ND $0.33 | $ 0.33 |
| 16 | D2 | RED LED | Cpu1 Status LED | Digikey 732-5016-ND $0.15 | $ 0.15 |
| 17 | D3 | YELLOW LED | Line 2 Status LED | Digikey 160-1851-ND $0.33 | $ 0.33 |
| 18 | D12 | IN4004 | Bell Call diode matrix | Digikey 1n4005-TPMSCT-ND $0.06 NOTE: D12-19: RATING MUST HANDLE 100VAC RING VOLTAGE | $ 0.06 |
| 19 | D13 | IN4004 | Bell Call diode matrix | Digikey 1n4005-TPMSCT-ND $0.06 NOTE: D12-19: RATING MUST HANDLE 100VAC RING VOLTAGE | $ 0.06 |
| 20 | D14 | IN4004 | Bell Call diode matrix | Digikey 1n4005-TPMSCT-ND $0.06 NOTE: D12-19: RATING MUST HANDLE 100VAC RING VOLTAGE | $ 0.06 |
| 21 | D15 | IN4004 | Bell Call diode matrix | Digikey 1n4005-TPMSCT-ND $0.06 NOTE: D12-19: RATING MUST HANDLE 100VAC RING VOLTAGE | $ 0.06 |
| 22 | D16 | IN4004 | Bell Call diode matrix | Digikey 1n4005-TPMSCT-ND $0.06 NOTE: D12-19: RATING MUST HANDLE 100VAC RING VOLTAGE | $ 0.06 |
| 23 | D17 | IN4004 | Bell Call diode matrix | Digikey 1n4005-TPMSCT-ND $0.06 NOTE: D12-19: RATING MUST HANDLE 100VAC RING VOLTAGE | $ 0.06 |
| 24 | D18 | IN4004 | Bell Call diode matrix | Digikey 1n4005-TPMSCT-ND $0.06 NOTE: D12-19: RATING MUST HANDLE 100VAC RING VOLTAGE | $ 0.06 |
| 25 | D19 | IN4004 | Bell Call diode matrix | Digikey 1n4005-TPMSCT-ND $0.06 NOTE: D12-19: RATING MUST HANDLE 100VAC RING VOLTAGE | $ 0.06 |
| 26 | D20 | RED LED | Cpu2 Status LED | Digikey 732-5016-ND $0.15 | $ 0.15 |
| 27 | D21 | YELLOW LED | ICM Status LED | Digikey 160-1851-ND $0.33 | $ 0.33 |
| 28 | D22 | IN4148 | Gen Purpose Diode | Digikey 1N4148FS-ND $0.06 FLYBACK SUPPRESSION | $ 0.06 |
| 29 | D23 | IN4148 | Gen Purpose Diode | Digikey 1N4148FS-ND $0.06 FLYBACK SUPPRESSION | $ 0.06 |
| 30 | D24 | IN4148 | Gen Purpose Diode | Digikey 1N4148FS-ND $0.06 FLYBACK SUPPRESSION | $ 0.06 |
| 31 | D25 | IN4148 | Gen Purpose Diode | Digikey 1N4148FS-ND $0.06 FLYBACK SUPPRESSION | $ 0.06 |
| 32 | EXT1 | EXT1 | Press-fit Fem Amphenol | Digikey A24390-ND $8.97 | $ 8.97 |
| 33 | EXT2 | EXT2 | Press-fit Fem Amphenol | Digikey A24390-ND $8.97 | $ 8.97 |
| 34 | EXT3 | EXT3 | Press-fit Fem Amphenol | Digikey A24390-ND $8.97 | $ 8.97 |
| 35 | EXT4 | EXT4 | Press-fit Fem Amphenol | Digikey A24390-ND $8.97 | $ 8.97 |
| 36 | FUSE | 2.2A MAX | Glass Cartridge Fuse Holder | Digikey 732-11373-ND $0.64, Digikey 507-1264-ND 5x20mm Glass 2A Fast-Blo Fuse: $0.17 | $ 0.81 |
| 37 | IC1 | LDA110 | 6 PIN DIP | Digikey CLA111-ND $0.73, Digikey A120346-ND 6P DIP SOCK $0.22 | $ 0.95 |
| 38 | IC2 | LDA110 | 6 PIN DIP | Digikey CLA111-ND $0.73, Digikey A120346-ND 6P DIP SOCK $0.22 | $ 0.95 |
| 39 | IC3 | LDA110 | 6 PIN DIP | Digikey CLA111-ND $0.73, Digikey A120346-ND 6P DIP SOCK $0.22 | $ 0.95 |
| 40 | IC4 | LDA110 | 6 PIN DIP | Digikey CLA111-ND $0.73, Digikey A120346-ND 6P DIP SOCK $0.22 | $ 0.95 |
| 41 | IC5 | LDA110 | 6 PIN DIP | Digikey CLA111-ND $0.73, Digikey A120346-ND 6P DIP SOCK $0.22 | $ 0.95 |
| 42 | IC6 | LDA110 | 6 PIN DIP | Digikey CLA111-ND $0.73, Digikey A120346-ND 6P DIP SOCK $0.22 | $ 0.95 |
| 43 | IC7 | ULN2803 | 18 PIN DIP | Digikey 497-2356-5-ND $1.07, Digikey ED3047-5-ND 18P DIP SOCK $0.20 | $ 1.27 |
| 44 | IC8 | PIC16F1709 | 20 PIN DIP | Digikey PIC16F1709-I/P-ND $1.60, Digikey 2057-ICS-320-T-ND 20P DIP SOCK $0.25 | $ 1.85 |
| 45 | IC9 | MT8870 | ICM DTMF Decoder | Digikey MT8870DE1-ND $3.75, Digikey ED3047-5-ND 18P DIP SOCK $0.20 | $ 3.95 |
| 46 | IC10 | PIC16F1709 | 20 PIN DIP | Digikey PIC16F1709-I/P-ND $1.60, Digikey 2057-ICS-320-T-ND 20P DIP SOCK $0.25 | $ 1.85 |
| 47 | IC11 | LDA110 | 6 PIN DIP | Digikey CLA111-ND $0.73, Digikey A120346-ND 6P DIP SOCK $0.22 | $ 0.95 |
| 48 | IC12 | ULN2803 | 18 PIN DIP | Digikey 497-2356-5-ND $1.07, Digikey ED3047-5-ND 18P DIP SOCK $0.20 | $ 1.27 |
| 49 | IC13 | 10 LED BAR GRAPH | Buzzer Diode Matrix | Digikey 160-1067-ND $1.40 | $ 1.40 |
| 50 | JP3 | PRIMARY JUMPER | 32 PIN DIP HEADER | Digikey 732-5307-ND $1.64, Digikey 732-13625-ND Jumper Block (x2) $1.40 | $ 3.04 |
| 51 | JP4 | SECONDARY JUMPER | 32 PIN DIP HEADER | Digikey 732-5307-ND $1.64 | $ 1.64 |
| 52 | JP5 | POWERDSINE RING GEN | 6 PIN SIP HEADER | Digikey 732-5319-ND $1.33 | $ 1.33 |
| 53 | K1 | 12V DPDT RLY | Line 1 Hold Relay | Digikey 255-1079-ND $3.44 | $ 3.44 |
| 54 | K2 | 12V DPDT RLY | Line 2 Hold Relay | Digikey 255-1079-ND $3.44 | $ 3.44 |
| 55 | K3 | 12V DPDT RLY | Line 1 Ring Relay | Digikey 255-1079-ND $3.44 | $ 3.44 |
| 56 | K4 | 12V DPDT RLY | Line 2 Ring Relay | Digikey 255-1079-ND $3.44 | $ 3.44 |
| 57 | Q1 | IRF9530 | TO-220 P-CHAN MOSFET | Digikey IRF9530NPBF-ND $1.15, Amazon 4/40 1/4" screw&nut: $0.17 | $ 1.32 |
| 58 | Q2 | IRF9530 | TO-220 P-CHAN MOSFET | Digikey IRF9530NPBF-ND $1.15, Amazon 4/40 1/4" screw&nut: $0.17 | $ 1.32 |
| 59 | Q3 | 7805 | TO-220 Logic +5V Power | Digikey NCP7805TGOS-ND $0.57, Amazon 4/40 1/4" screw&nut: $0.17 | $ 0.74 |
| 60 | Q4 | TIP32 | TO-220 Ring Gen +12V Output Pow Xstr | Digikey TIP32GOS-ND $0.65, Amazon 4/40 1/4" screw&nut: $0.17 | $ 0.82 |
| 61 | Q5 | 7805 | TO-220 ICM +5V Power | Digikey NCP7805TGOS-ND $0.57, Amazon 4/40 1/4" screw&nut: $0.17 | $ 0.74 |
| 62 | Q7 | TIP125 EXT1 | TO-220 Buzzer Pow Xstr | Digikey TIP125GOS-ND $0.78, Amazon 4/40 1/4" screw&nut: $0.17 | $ 0.95 |
| 63 | Q8 | TIP125 EXT2 | TO-220 Buzzer Pow Xstr | Digikey TIP125GOS-ND $0.78, Amazon 4/40 1/4" screw&nut: $0.17 | $ 0.95 |
| 64 | Q9 | TIP125 EXT3 | TO-220 Buzzer Pow Xstr | Digikey TIP125GOS-ND $0.78, Amazon 4/40 1/4" screw&nut: $0.17 | $ 0.95 |
| 65 | Q10 | TIP125 EXT4 | TO-220 Buzzer Pow Xstr | Digikey TIP125GOS-ND $0.78, Amazon 4/40 1/4" screw&nut: $0.17 | $ 0.95 |
| 66 | R1 | 160 1W | --- | Digikey 160W-1-ND $0.31 | $ 0.31 |
| 67 | R2 | 4M | --- | Digikey 3.9MQBK-ND $0.10 | $ 0.10 |
| 68 | R3 | 1K | --- | Digikey 1.0KQBK-ND $0.10 | $ 0.10 |
| 69 | R4 | 4M | --- | Digikey 3.9MQBK-ND $0.10 | $ 0.10 |
| 70 | R5 | 33K 1W | --- | Digikey 33KW-1-ND $0.31 | $ 0.31 |
| 71 | R6 | 1K 1W | --- | Digikey 1.0KW-1-ND $0.31 | $ 0.31 |
| 72 | R7 | 1K 1W | --- | Digikey 1.0KW-1-ND $0.31 | $ 0.31 |
| 73 | R8 | 160 1W | --- | Digikey 160W-1-ND $0.31 | $ 0.31 |
| 74 | R9 | 4M | --- | Digikey 3.9MQBK-ND $0.10 | $ 0.10 |
| 75 | R10 | 1K | --- | Digikey1.0KQBK-ND $0.10 | $ 0.10 |
| 76 | R11 | 4M | --- | Digikey 3.9MQBK-ND $0.10 | $ 0.10 |
| 77 | R12 | 33K 1W | --- | Digikey 33KW-1-ND $0.31 | $ 0.31 |
| 78 | R13 | 1K 1W | --- | Digikey 1.0KW-1-ND $0.31 | $ 0.31 |
| 79 | R14 | 1K 1W | --- | Digikey 1.0KW-1-ND $0.31 | $ 0.31 |
| 80 | R15 | 60/1W | --- | Digikey 62W-1-ND $0.31 | $ 0.31 |
| 81 | R16 | 60/1W | --- | Digikey 62W-1-ND $0.31 | $ 0.31 |
| 82 | R17 | 220 | --- | Digikey CF14JT220RCT-ND $0.10 | $ 0.10 |
| 83 | R18 | 220 | --- | Digikey CF14JT220RCT-ND $0.10 | $ 0.10 |
| 84 | R19 | 100K | --- | Digikey 100KQBK-ND $0.10 | $ 0.10 |
| 85 | R20 | 100K | --- | Digikey 100KQBK-ND $0.10 | $ 0.10 |
| 86 | R21 | 30K | --- | Digikey 30KQBK-ND $0.10 | $ 0.10 |
| 87 | R22 | 70K | --- | Digikey 68KQBK-ND $0.10 | $ 0.10 |
| 88 | R23 | 150K | --- | Digikey 150KQBK-ND $0.10 | $ 0.10 |
| 89 | R24 | 380K | --- | Digikey 383KXBK-ND $0.10 | $ 0.10 |
| 90 | R26 | 1K | --- | Digikey 1.0KQBK-ND $0.10 | $ 0.10 |
| 91 | R28 | 300/1W | --- | Digikey 300W-1-ND $0.31 | $ 0.31 |
| 92 | RN1 | 5.6K RES NET | --- | Digikey 4116R-1-562LF-ND $1.16, Digikey A120349-ND 16P DIP SOCK $0.25 | $ 1.41 |
| 93 | RN2 | 10K RES NET | --- | Digikey 4116R-1-103LF-ND $1.16, Digikey A120349-ND 16P DIP SOCK $0.25 | $ 1.41 |
| 94 | SW1 | 8 POS DIP SWITCH | Buzz Call Programming Switches | Digikey GH7193-ND $1.33 (Alternate: Digikey GH7192-ND) | $ 1.33 |
| 95 | SW2 | 8 POS DIP SWITCH | Bell Call Programming Switches | Digikey GH7193-ND $1.33 (Alternate: Digikey GH7192-ND) | $ 1.33 |
| 96 | X1 | 3.58MHz | MT8870 Xtal | Digikey 535-9053-ND $0.35 | $ 0.35 |
| Parts Total: | $ 115.12 | ||||