| A | B |
|---|
| ITU-T I.430 | defines ISDN Basic Rate Interface (BRI) physical layer specification |
| ITU-T I.431 | defines ISDN Primary Rate Interface (PRI) physical layer specification |
| The ISDN datalink layer specification is based on | Link Access Procedure on the D channel (LAPD) |
| ITU-T I.450 | defines ISDN's network layer |
| Network layer and Datalink layer | these two standards specify ISDN user-to user, circuit-switched, and packet-switched connections |
| Circuit switching | Switching system in which a dedicated physical circuit path must exist between sender and receiver for the duration of the "call." |
| Packet switching | Networking method in which nodes share bandwidth with each other by sending packets. |
| recommend telephone network standards for ISDN | Protocols that begin with "E" , for example the E.164 |
| E.164 protocol | describes international addressing for ISDN |
| ISDN protocols that deal with concepts, terminology, and general methods | Protocols that begin with "I" , for example the I.100 series |
| I.200 | deals with service aspects of ISDN |
| I.300 | describes network aspects |
| I.400 | describes how the User-Network Interface (UNI) is provided |
| ISDN protocols that cover how switching and signaling should operate | begin with "Q" |
| ISDN global configuration tasks | Select switch type (must matches the ISDN provider's switch) and specify traffic to trigger DDR call |
| ISDN interface configuration tasks | Select interface specifications and configure ISDN addressing |
| Router(config)# isdn switch-type | specifies the type of ISDN switch with which the router |
| switch-type "basic-5ess " | AT&T basic rate switches (USA) |
| switch-type "basic-dms100 " | NT DMS-100 |
| switch-type "basic-ni1 " | National ISDN-1 (North America) |
| Router(config)# interface bri interface-number | Selects the interface for ISDN BRI operation |
| Router(config-if)# encapsulation [ppp|hdlc] | Selects framing for ISDN BRI |
| Router(config-if)# isdn spid1 spid-number [ldn] | Sets a B channel Service Profile Identifier (SPID) required by many service providers and ldn - local dial number (optional) |
| Router(config-if)# isdn spid2 spid-number [ldn] | Sets a SPID for the second B channel |
| Router# ping or telnet | Verifying ISDN operation by triggering a link |
| Router# show dialer | Displays current status of link, including amount of time link is connected |
| Router# show isdn active | When using ISDN, displays call status while call is in progress |
| Router# show isdn status | Displays the status of an ISDN connection |
| Router# show ip route | Displays all routes, including static routes |
| Router# debud q921 | Verifies that you have a connection to the ISDN switch |
| Router# debug dialer | Shows call setup and teardown activity |
| Router# clear interface | Clears currently established connections |
