Specifications

Contents
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Configuring Asynchronous Serial Traffic
over UDP
DC-44
UDPTN Overview DC-44
How to Configure Asynchronous Serial Traffic over UDP DC-45
Preparing to Configure Asynchronous Serial Traffic over UDP DC-45
Configuring a Line for UDPTN DC-45
Enabling UDPTN DC-46
Verifying UDPTN Traffic DC-46
Configuration Examples for UDPTN DC-47
Multicast UDPTN Example DC-47
Broadcast UDPTN Example DC-48
Point-to-Point UDPTN Example DC-48
MODEM CONFIGURATION AND MANAGEMENT
Overview of Modem Interfaces
DC-52
Cisco Modems and Cisco IOS Modem Features DC-52
Cisco IOS Modem Components DC-53
Logical Constructs in Modem Configurations DC-55
Asynchronous Interfaces DC-55
Group Asynchronous Interfaces DC-56
Modem Lines and Asynchronous Interfaces DC-57
Modem Calls DC-58
Asynchronous Line Configuration DC-58
Absolute Versus Relative Line Numbers DC-58
Line and Modem Numbering Issues DC-59
Decimal TCP Port Numbers for Line Connections DC-60
Signal and Flow Control Overview DC-61
Configuring and Managing Integrated Modems DC-62
Modems and Modem Feature Support DC-62
V.90 Modem Standard DC-63
V.110 Bit Rate Adaption Standard DC-63
V.120 Bit Rate Adaptation Standard DC-65
Managing Modems DC-65
Managing SPE Firmware DC-66
Configuring Modems in Cisco Access Servers DC-68
Configuring Modem Lines DC-68
Verifying the Dial-In Connection DC-69
Troubleshooting the Dial-In Connection DC-70