Interface cards descriptions
47
SmartNode 1000 and 2000 Series Getting Started Guide
1 • General Information
Interface modes
The interface can be used in two different modes, namely NET or USR. The NET mode means the interface
performs network-side signaling, whereas USR mode means user-side signaling as described in
table 16
. For
cabling, see appendix C,
“Cabling”
on page 142.
When changing the interface mode from NET to USR, or USR to NET, the clock source setting is automati-
cally adjusted. For NET the clock becomes master and for USR the clock becomes slave.
You can manually override these default settings of the clock (refer to the Software Configuration Guide). The next
time that the interface mode is changed the clock source changes back automatically to the default again.
IC-T1V 23-channel T1 gateway interface card for ISDN PRI
The IC-T1V is a PMC standard compatible interface card for the SmartNode 2000 series. It provides one
ISDN PRI interface and connects through a PCI packet and PCM circuit interface to the SmartNode
base unit.
The IC-T1V is a high performance ISDN networking card that supports up to 23 simultaneous voice or fax
calls. It meets the requirements of medium and large sized enterprises that want to connect their ISDN equip-
ment, such as an ISDN PBX, via a PRI interface to a multi-service IP network.
The ISDN PRI interfaces can be configured as user or network side interfaces. Its on board dedicated micro-
controller and DSPs off load the CPU of the SmartNode 2000 base unit and hence guarantee the conversion of
voice/fax circuits into related IP-packets in real-time with minimal delay and jitter values.
Table 16. Interface modes
Task
NET Mode
USR Mode
Clocking Mode Master: generates line clocking
Slave: accepts line clocking
Time Slot
Interface responsible for time slot selection Interface accepts time slot selection
