3Com Router User Manual

Typical SLIP Configuration Example187
III. Configuration Procedure
1Configure Router A:
aConfigure Dialer Rule
[Router]dialer-rule 1 ip permit
bConfigure the synchronous/asynchronous interface to asynchronous mode
[Router]interface serial 0
[Router-Serial0]physical-mode async
cConfigure IP address of synchronous/asynchronous interface
[Router-Serial0]ip address 10.110.0.1 255.0.0.0
dConfigure the incoming and outgoing call authorities of Modem
[Router-Serial0]modem
eEnable BDR
[Router-Serial0]dialer...

188CHAPTER 14: CONFIGURING SLIP
[Router]ip route-static 0.0.0.0   0.0.0.0   10.110.0.1 

15
CONFIGURING ISDN PROTOCOL
This chapter contains information on the following topics:
■ISDN Overview
■Configure ISDN
■Display and Debug ISDN
■Typical Configuration Example
■Fault Diagnosis and Troubleshooting of ISDN
ISDN OverviewISDN (Integrated Services Digital Network), developed from telephone integrated 
digital network (IDN), provides end-to-end digital connection, so as to support 
wide range of services (including voice and non-voice services).
ISDN provides the user with a group of standard...

190CHAPTER 15: CONFIGURING ISDN PROTOCOL
■Set the called number or sub-address to be checked in digital incoming call
1Configure ISDN Signaling Type 
Perform the following configurations in either system view or interface view.
Ta b l e 220   Configure type of signaling on ISDN interface
By default, DSS1 signaling is used on ISDN PRI interfaces.
The isdn protocol-type command can take effect only on ISDN PRI interfaces. 
For an ISDN BRI interface, it does not take effect. In other words, an ISDN BRI...

Configure ISDN191
When a router originates a call to PBX, it usually contains all called number 
information in the SETUP message.
 However, you can configure the command 
to determine whether the Sending Sending-Complete Information Element 
(SCIE) should be carried in the SETUP message.
 
Perform the following configurations in interface view.
Ta b l e 223   Configure the sending mode
By default, when a router sends a number, the Sending-Complete Information 
Element is carried in the SETUP message....

192CHAPTER 15: CONFIGURING ISDN PROTOCOL
Configure ISDN DoVISDN call includes voice call and digital call. Different communication mode makes 
different calls. In common circumstances, users initiate voice call when making 
voice communication and initiate digital call when making data transmission. ISDN 
DoV (Data over Voice) can firstly establish connections by voice call, and then 
begins data transmission. ISDN DoV can apply to such conditions as digital call is 
disabled (for example, long-distance...

Typical Configuration Example193
Typical Configuration 
Example
Interconnect Routers for 
Data Transmission via 
ISDN PRI LineI. Networking Requirement
Router A is connected with router B via WAN, as shown in the following diagram.
II. Networking Diagram
Figure 56   Networking diagram of ISDN protocol configuration example
III. Configuration Procedure
1Configure Router A:
aCreate an ISDN PRI interface.
[Router]controller e1 0
[Router-E1-0]pri-set
[Router-E1-0]quit
bConfigure the ISDN PRI interface....

194CHAPTER 15: CONFIGURING ISDN PROTOCOL
II. Networking Diagram
Figure 57   Networking for ISDN DoV
III. Configuration Procedure
1Configure Router A:
[Router]dialer-rule 1 ip permit
[Router]interface bri 0
[Router-Bri0]ip address 100.1.1.1 255.255.255.0
[Router-Bri0]dialer-group 1
[Router-Bri0]dialer route ip 100.1.1.2 8810148
[Router-Bri0]dialer data2voice
2Configure Router B:
[Router]dialer-rule 1 ip permit
[Router]interface bri 0
[Router-Bri0]ip address 100.1.1.2 255.255.255.0...

16
CONFIGURING LAPB AND X.25
This chapter contains information on the following topics:
■X.25 and LAPB Protocols Overview
■Configure LAPB
■Configure X.25
■Configure X.25 over Other Protocols
■Display and Debug LAPB and X.25
■Typical LAPB Configuration Example
■Typical X.25 Configuration Example
■Fault Diagnosis and Troubleshooting of LAPB
■Fault Diagnosis and Troubleshooting of X.25
X.25 and LAPB 
Protocols OverviewX.25 protocol is the interface procedure between the data terminal equipment 
(DTE) and...

196CHAPTER 16: CONFIGURING LAPB AND X.25
Figure 58   X.25 network model
The X.25 protocol suite maps to the lowest three layers of the OSI (Open System 
Interconnection) reference model. The following protocols are typically used in 
X.25 implementations: Packet-Layer Protocol (PLP), Link Access Procedure 
Balanced (LAPB), and other physical-layer serial interfaces. X.25 layer 3 
(packet-layer protocol) describes the format of packet used by the packet layer 
and the procedure of packet switching between...