DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1827UDS1-BD (UDS1 Interface Circuit Pack)
9
Circuit Pack Administration and Options
The DS1 configuration for each circuit pack is administered on the DS1 Circuit
Pack form.
Bit Rate
is set to 1.544 Mbps for 24-c hannel systems, and 2.048
Mbps for 32-channel system s.
Country Protocol
is used to drive layer 3 protocol
decisions based on PRI specifications spec ific to a given c ountry (not those
related to specific features). This Country Protocol is independent of the
Country
parameter administered on the c ountry-options system-p arameters form.
Different UDS1 circuit packs may b e administered with different Country
Protocols, allowing the switch to ac t as a gateway between two inc ompatible
ISDN-PRI implementations (for example, between two different c ountries). US
systems use country protocol 1.
Near-End CSU Type
is set to
other
for no CSU
installed or for an external CSU such as an Luc ent ESF T1 CSU, or
integrated
for
the 120A1 CSU Module. Answering
integrated
will cause additional fie lds to be
displayed for ad ministering the Enhanced Integrated CSU Module. In addition to
the above there are numerous other fields defi ning such parameters as fr aming
modes, line coding companding mode and so on. For det ails, see
DEFINITY
Communications System Generic 3 V2 Implementation,
555-230-653, and
DEFINITY Communications System Generic 2.2 and Generic 3 V2
DS1/CEPT/ISDN-PRI Reference
, 555-025-107.
Two option jumpers located on the sid e of the TN464C/D circuit pack mus t be
installed correctly. The figures on the following page shows how to config ure the
circuit pack for 24-channel or 32-channel DS1, and for 75*W (c oaxial) or 120*W
trunk connections. The channel selec tion must match the parameter s
administered on the corresp onding DS1 Circuit Pack Form. (US applic ations use
24 Channels.)
Figure 9-111. TN464C/D DS1 Option Jumpers
Backplane Connectors
24/32 Channel Selector
75/120 Ohm Selector
Top
Bottom
Faceplate
TN464C/D