Cisco 3825 Hardware Installation Guide - Page 111
-Port Serial Network Module, Connecting the 4-Port Serial Module to a Network
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Chapter 5 Connecting Serial Network Modules 4-Port Serial Network Module Table 5-6 New 4- and 8-Port Serial Network Module Interface Numbering (continued) Slot Number 21 31 Interface Numbers (4-Port Module) 65-68 97-100 1. Cisco 3640 and Cisco 3660 routers only. Interface Numbers (8-Port Module) 65-72 97-104 When an automatic configuration update is performed, the following message appears: Line number convention changed from 16 lines/slot to 32 lines/slot. 4-Port Serial Network Module This section provides information about the 4-port serial network module (Cisco product number NM-4T). (See Figure 5-5.) With the appropriate serial transition cable, each port on this module can provide an EIA/TIA-232, EIA/TIA-449, V.35, X.21, EIA/TIA-530 DTE, or nonreturn to zero/nonreturn to zero inverted (NRZ/NRZI) serial interface. The module provides a synchronous data rate of 8 MB per second on port 0, 4 MB per second each on port 0 and port 2, or 2 MB on all four ports simultaneously. Note Half-duplex and binary-synchronous communications are not supported on the 4-port serial network module. Figure 5-5 4-Port Serial Network Module Serial ports (DB-60) SERIAL 4T SERIAL 3 SERIAL 2 SERIAL 1 SERIAL 0 H9597 CN/LP RXC RXD TXC TXD CN/LP RXC RXD TXC TXD CN/LP RXC RXD TXC TXD EN CN/LP RXC RXD TXC TXD Connecting the 4-Port Serial Module to a Network The 4-port serial network module provides four universal, high-density, 60-pin receptacles. The serial cable attached to each receptacle determines the port's electrical interface type and mode, DTE or DCE. After you install a 4-port serial module, use the appropriate serial cable to connect each of the DB-60 serial ports to a synchronous modem, channel service unit/data service unit (CSU/DSU), or other DCE equipment. (See Figure 5-6.) OL-2485-20 Cisco Network Modules Hardware Installation Guide 5-9