3Com MSR 30, MSR 50 manual X25 call-facility, Description on the user facility option

442CHAPTER 26: LAPB AND X.25 CONFIGURATION COMMANDS

adapt this change. Please consult your ISP to learn if the network supports this function before deciding on whether the alias function is enabled or not.

For information about x.25 alias, refer to “x25 alias-policy” on page 441.

Example # Configure the link-layer protocol on interface Serial2/0 as X.25 and its X.121 address to 20112451, and set two aliases with different match types for it.

<Sysname> system-view [Sysname] interface serial 2/0 [Sysname-Serial2/0] link-protocol x25

[Sysname-Serial2/0] x25 x121-address 20112451

[Sysname-Serial2/0] x25 alias-policy right 20112451$

[Sysname-Serial2/0] x25 alias-policy left $20112451

With the above configurations, a call whose destination address is 20112451 can be accepted as long as it can reach the local X.25 interface Serial2/0, no matter whether the network is performing the prefix adding operation or suffix adding operation.

x25 call-facility

Syntax x25 call-facility facility-option

undo x25 call-facility facility-option

View Interface view

Parameter facility-option: User facility option, including:

Table 65 Description on the user facility option

Option	Description
closed-user-group group	Specifies a closed user group (CUG) number for the X.25
number	interface. The facility enables DTE to belong to one or more
	CUGs. CUG allows the DTEs in it to communicate with each
	other, but not to communicate with other DTEs. The group
	number is in the range 0 to 9999.
packet-size input-size	Carries out maximum packet size negotiation in initiating call
output-size	from the X.25 interface. Maximum packet size negotiation is
	part of flow control parameter negotiation. It needs two
	parameters: maximum input packet size and maximum output
	packet size, which must range from 16 (inclusive) to 4096
	(inclusive), and must be the integer power of 2.
reverse-charge-request	Carries reverse charging request when initiating calls from the
	X.25 interface.
roa-list roa name	Specifies an ROA list name for the X.25 interface. The roa name
	is a string of 1 to 19 characters.
send-delay delay-time	Carries out the maximum network send delay negotiation
	when initiating calls from the X.25 interface. The delay time is
	in the range 0 to 65534 ms.
threshold input-value	Specifies throughput negotiation values for initiating calls from
output-value	the X.25 interface. The values of input/output can only be 75,
	150, 300, 600, 1200, 2400, 4800, 9600, 19200, and 48000.