Patton electronic SmartNode 4110 Series ユーザーズマニュアル

ISDN configuration task list

SmartWare Software Configuration Guide 

Mode: q921

This command specifies the next protocol or application has to be attached to the Q.921 protocol. In case of 
ISDN this will always be the Q.931 protocol but in a distributed system for example, it could also be a net-
work protocol.

Mode: q921

Normally, Q.931 is running as ISDN Layer 3 protocol on Q.921. But it is also possible another protocol is 
using Q.931 as its next encapsulation step an then Q.931 will not be configured out of the Q.921 context. 
That means, Q.931 encapsulation can be configured in different configuration modes. For this reason, the 

node(q921)[slot/port]#protocol pp
or
node(q921)[slot/port]#protocol pmp

Specify Q.921 operating mode (Default: BRI: 
pmp, PRI: pp).
The Q.921 protocol running on BRI ports can 
operate in point-to-point (pp) or point-to-multi-
point (pmp) mode. Point-to-multipoint is used 
to connect multiple terminals to an ISDN S-
Bus. In some cases small PBXs are also con-
nected to the public ISDN in point-to-multi-
point mode. Point-to-point is typically used to 
connect PBXs to a public or private ISDN.
The Q.921 protocol of PRI ports always run in 
point-to-point (pp) mode.

node(q921)[slot/port]#uni-side auto 
or
node(q921)[slot/port]#uni-side net
or
node(q921)[slot/port]#uni-side user

Specify the UNI side of the interface (Default: 
auto)

If layer1 clock mode is not defined or set to 
auto this setting also specifies the clock mode 
for layer1.
NET: clock mode = master
USR: clock mode = slave
If set to auto the UNI side setting is taken from 
layer3.

Enables the Q.921 permanent activity 
(Default: disabled). 
By default, the Q.921 protocol is not enabled 
permanently, i.e. the first call enables it.

Enables/Disables the next application or pro-
tocol. Currently only Q.931 is supported.