1. 5 55C 30 90 RH 2000 m ISDN 250 V DC 250 V DC M RESTER ot eh 2. 5aD DSU NE ISDN a DIN DIN 2 ee DIN 35mm NM 8109 2 P1 3 mm DIN 35mm 93 107 137 3 3 G 3. 1 G G 2 M RESTER 500VDC 1000 MO 20 M 0 4. 3 EE NM 8109 2 P3 3 5. M ESTER ISDN PH 1 6. G G M RESTER G ISDN 500 A 8 20 s 10000 A 8 20 s DSU LINE DSU ISDN ISDN DSU 9 7. 5 6 7 8 1 2 3 4 L J LL _ LL LINE G DSU ISDN DSU G MD INS 7 18 1 1 2 NM 8109 2 P2 3 WW MD INS MD INS INS 64 LINE NTT M RESTER a 1000 M RESTER M RESTER 2