DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1177PE-BCHL (PRI Endpoint Port)
9
PE-BCHL (PRI Endpoint Port)
A PRI Endpoint provides ISDN-PRI (Primary Rate Interface) connections
application eq uipment or terminal adap ters that terminate ISDN-PRI. The
equipment or terminal ad apters are connected to the switch via the TN464C/D
UDS1 interface circuit pac k. This maintenance object moni tors the PRI endpoint
port hardware on the UDS1 circuit p ack by logg ing hardware errors, running
tests for port initialization, and ru nning periodic and scheduled maintenance and
demand tests.

Wideband Switching

Wideband switching supports end-t o-end connectivity b etween customer
endpoints at data rates from 128 to 1536 kbps over T1 facilities and to 1984 kbps
over E1 facilities. DEFINITY switching capabilities are extend ed to suppor t
wideband c alls comprised of mult iple DS0s that are switched end -to-end as a
single entity.
Wideband switching is designed for ISDN application equipment such as ISDN
video codec s, but can also interface to non-ISDN application equip ment by
using PRI terminal adapters. In the same sense that a DEFINITY data module
acts as a DCP or BRI terminal adapter between end point data such as V.35 and
dialing interfaces s uch as RS-366 and a DCP interface, a PRI terminal adapter
acts as a wideband terminal adapter b etween endpoint data and dialing
interfaces and DEFINITY’s line-side ISDN PRI interface. Wideband switching
introduces PRI endpoints on DEFINITY line-side interfaces.
A PRI endpoint has a unique extension numb er and consists of one or more
contiguous B-channels on a line-side T1 or E1 ISDN PRI facility. Endpoints initiate
and receive calls via ISDN SETUP messages indicating the data rate and
specific B-Channels to be used, and c ommunicate all other call status
information via standard ISDN messages. Any DEFINIT Y ISDN signaling set such
as Lucent, CCITT, or ECMA may be used for a line-side ISDN PRI facility.
Multiple PRI endpoints on one line-sid e facility are separate and d istinct within
the facility. Non-overlapping c ontiguous sets of B-Channels are assoc iated with
each PRI endpoint, and the end point equipment is exp ected to initiate c alls
within these boundaries. The endp oint applicatio n equipment must:
MO Name (in
Alarm Log) Alarm
Level Initial Command to
Run1
1. For additional repair information, see also UDS1-BD and
Troubleshooting Wideband
Proble ms
in Chapter 5, ‘‘Alarms, Errors, and Troub leshooting’’.
Full Name of MO
PE-BCHL1MINOR test port
UUCSSpp
l PRI Endpoint Port
PE-BCHL WARNING test port
UUCSSpp
sh PRI Endp oint Po rt