Experts teach you how to configure ISDN dialing to complete data creation (1)

Experts teach you how to configure ISDN dialing to complete data establishment. ISDN dialing settings mainly introduce the similarities and differences between connecting a wireless router and setting ISDN dialing. You can easily complete ISDN dialing settings, there is no difficulty. Hurry into the Wireless World.

It is often said that long-distance ISDN dialing cannot be used to establish connections among clients or colleagues who work normally. I have the honor to solve this problem in the Cisco network equipment. I will share with you the analysis and solution of the problem of ISDN dialing from Dalian to Shenzhen in the project:

The following is the initial configuration for establishing a data call on the Dalian Cisco router:
Interface BRI2/0
Ip address 10.1.1.1
255.255.255.252
Encapsulation ppp
Dialer map ip 10.1.1.2 name SZ-Center broadcast 0755 XXXXXXX
Dialer-group 1
Isdn switch-type basic-net3
Ppp authentication chap
!
Dialer-list 1 protocol ip permit

Ping:
10.1.1.2 When ISDN dialing is triggered, connection cannot be established successfully. In order to determine the cause of the fault, Debug
Dialer finds that the call is triggered normally. In this way, you need to check whether the circuit call is established normally. Debug isdn q931 on the Dalian Cisco router to obtain the following output information:
5w0d: ISDN BR2/0: TX-"SETUP pd = 8 callref = 0x03
5w0d: Bearer Capability I = 0x8890
5w0d: Channel ID I = 0x83
5w0d: Called Party Number I = 0x80, '123 ',
Plan: Unknown, Type: Unknown
5w0d: ISDN BR2/0: RX-SETUP_ACK pd = 8 callref = 0x83
5w0d: Channel ID I = 0x89
5w0d: ISDN BR2/0: RX-DISCONNECT pd = 8 callref = 0x83
5w0d: Cause I = 0x83C1-Bearer capability not implemented
5w0d: ISDN BR2/0: TX-"RELEASE pd = 8 callref = 0x03
5w0d: Cause I = 0x80C1-Bearer capability not implemented
5w0d: ISDN BR2/0: RX-RELEASE_COMP pd = 8 callref = 0x83
In the above output: Bearer Capability in Setup

8890, 88 indicates CTITT standard, unlimited data communication, 90 indicates a circuit mode, the speed is 64 K communication. Setup_Ack indicates that the switch receives the call to establish a signaling. DISCONNECT indicates that the switch receives a release connection signaling, which contains a Cause Code, indicating the reason for releasing the call.