Configuring Support for PBX Signalling Protocols
Configuring Q.SIG PRI Signalling Support
MC-417
Cisco IOS Multiservice Applications Configuration Guide
As shown in the preceding section, you have a choice of configuring the isdn-switch-type command to
support Q.SIG at either the global configuration level or the interface configuration level. For example,
if you have a Q.SIG connection on one line and on the PRI port, you can configure the ISDN switch type
in one of the following combinations:
•Set the global isdn-switch-type command to support Q.SIG and set the interface isdn-switch-type
command for interface serial 0:23 to a PRI setting such as 5ess.
•Set the global isdn-switch-type command to support PRI 5ess and set the interface
isdn-switch-type command for interface serial 1:23 to support Q.SIG.
•Configure the global isdn-switch-type command to another setting (such as switch type VN3), set
the interface isdn-switch-type command for interface serial 0:23 to a PRI setting, and set the
interface isdn-switch-type command for interface serial 1:23 to support Q.SIG.
Configuring Fusion Call Control Signalling (NEC Fusion) on the Cisco AS5300
If you have an NEC PBX in your network and you are running FCCS, you will need to configure this
device appropriately. FCCS, also known as NEC Fusion, allows individual nodes anywhere within a
network to operate as if they were part of a single integrated PBX system. The database storage, share,
and access routine of NEC Fusion allow real-time access from any node to any other, allowing individual
nodes to “learn” about the entire network configuration. This capability allows network-wide feature,
functional, operational, and administration transparency.
Figure 97 shows an example of an AS5300 Q.SIG signalling configuration using an NEC PBX.
Step1 0 Router(config-if)# isdn network-failure-cause
[value]
(Optional) Specifies the cause code to pass to the
PBX when a call cannot be placed or completed
because of internal network failures. Possible values
are from 1 to 127.
All cause codes except for Normal Call Clearing (16),
User Busy (17), No User Responding (18), and No
Answer from User (19) will be changed to the
specified cause code.
Step1 1 Router(config-if)# isdn bchan-number-order
{ascending | descending}
(Optional) Configures the ISDN PRI interface to
make the outgoing call selection in ascending or
descending order.
The default is descending order, in which the first call
from the Cisco AS5300 uses channel 23 (T1) or
channel 31 (E1). The second call then uses channel 22
(T1) or channel 30 (E1), and so on in descending
order.
If you select ascending order and the PRI group starts
with 1, the first call uses channel 1, the second call
uses channel 2, and so on in ascending order. If the
PRI group starts with a different time slot, the
ascending order starts with the lowest time slot.
Step1 2 Router(config-if)# exit Exits interface configuration mode.
Command Purpose