Instruction manual
Networking and connectivity
555-233-767134 Issue 4 May 2003
NT interface on TN556C
Communication Manager supports the NT (network) side of the T interface using
the TN556C circuit pack. This gives the switch full tie trunk capability using BRI
trunks. Communication Manager supports leased BRI connections through the
public network, with a TN2185 on each end of the leased connection.
Communication Manager will not, however, allow customers to administer both
endpoints and trunks on the same TN556C circuit pack.
Presentation restriction
Restricts the display of calling/connected numbers over ISDN trunks. ISDN trunk
groups can be administered to control the display of calling/connected numbers.
Each trunk group can be administered to display “presentation restricted,”
“number no available due to networking,” or an administered text string instead of
the calling/connected number.
Wideband switching
Provides the ability to dedicate two or more ISDN B-channels or DSO endpoints
for applications that require large bandwidth. Certain applications, such as video
conferencing and high-speed data transmission, require extra bandwidth and it
becomes necessary to put several ISDN-PRI narrowband channels into one
wideband channel to accommodate the needs of these applications.
This feature supports both European and North American standards.
Multi-Frequency Packet (MFP)
signaling — Russia
See ‘‘Multi-Frequency Packet (MFP) signaling’’ on page 100.
National private networking support
— Japan
See ‘‘National private networking support’’ on page 99.
Personal Central Office Line (PCOL)
Provides a dedicated trunk circuit between multi-appearance telephones and a CO
or other switch via the network.