Nokia IP1260 Installation Guide - Page 91

Figure 24 Output Connector for the X.21 Cable Single-Port T1 NIC Transmitted Data (B) 9 Control (B) 10 Receive Data (B) 11 Indicate (B) 12 Signal Timing Element (B) 13 Byte Timing (B) 14 15 1 Protective Ground 2 Transmitted Data (A) 3 Control (A) 4 Received Data (A) 5 Indicate (A) 6 Signal Timing Element (A) 7 Byte Timing (A) 8 Signal Ground 00112 Single-Port T1 NIC The IP1200 Series IP security platforms support Nokia-approved, single-port T1 cards. The Nokia IP1200 Series appliances can accommodate a maximum number of four cards. The Nokia T1 network interface card provide the following features: „ Built-in CSU/DSU for long and short-haul operations „ Line speed to full T1 „ High-speed access for network connections over leased lines „ On-board HDLC and Frame controllers, which allow operation at 1.544 Mbps Nokia IP1200 Series Security Platform Installation Guide 91