Lucent 5ESS DRM, Руководство пользователя, Страница: 35 / 642

— Packet Switching Unit 2 (PSU2) provides SS7 capabilities.
•
Integrated Services Digital Network (ISDN)
— Integrated Services Line Unit 2 (ISLU2) provides 512 terminations for a
combination of digital and analog lines.
— PSU2 provides packet switching functions.
— SIP signaling is now supported on the PSU2 peripheral, and IP bearer for
packet trunking is supported on OFI-IPs on the OIU peripheral.
— Remote Integrated Services Line Unit (RISLU) provides ISDN services to
customers beyond maximum ISLU2 loop boundaries.
•
Access Interface Unit (AIU), Enhanced AIU (EAIU) and Multiplex Access
Interface Units (XAIUs) provides the termination of analog customer lines.
2.5 Alarms
2.5.1 Alarm Status Unit (ASU)
The optional Alarm Status Unit (ASU) provides local audible and visual indication of
the office alarms with LEDs for the alarm levels critical, major, and minor. There is an
Alarm Retire key at the ASU which retires the audible alarms and clears the alarm
level LEDs at the ASU. The local ASU is optional but the alarms are always remoted
to the ASM. See 235-200-145,
5ESS Switch OneLink Manager Administrative
Services Module (ASM) User’s Guide , for more information on alarms.
2.6 Capacities
The DRM can be engineered in terms of line capacity, trunk capacity, and
applications/features. The line capacity of the DRM is a maximum of 28,800 lines or
24,000 trunks.
2.6.1 Switching Modules
The DRM supports one SM-2000.
2.6.2 Lines and Trunks
The line and trunk capacities of a DRM vary based upon:
•
Line to trunk ratio
•
Line concentration
•
Features.
This list is not all inclusive. For additional details see 235-070-100, 5ESS Switch
Administration and Engineering Guidelines .
2.7 The DRM Network
2.7.1 Introduction
The DRM network provides an out-of-band data network infrastructure that supports
centralized OAM&P (Operational, Administrative, Maintenance, and Provisioning)
functions as well as connectivity to Operational Support Systems (OSSs), such as
billing, surveillance, and traffic measurement. Although a customer may provide their
own network solution, this section describes the connectivity, both Wide and Local
Area Network (WAN and LAN) specification for both DRM central (host) and remote
sites using the Lucent Technologies Components Solution (LNCS).
235-200-150
Feburary 2007 5ESS
®
SWITCH DISTINCTIVE REMOTE MODULE
Issue 3.00O Page 2-13