Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
427 Wideband Switching 
15
Networking
All of the wideband networking is over ISDN-PRI facilities (and the emulation of 
them by ATM-CES) but may connect to a variety of networks, other domestic 
interexchange carriers’ services, private line, RBOC services, and services in 
other countries.
ISDN-PRI trunk groups and channel
allocation
Only ISDN-PRI trunks (and the emulation of them by ATM-CES) support...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
428 Wideband Switching 
15
Given this facility list concept, the algorithms have the ability to search for trunks, 
by facility, in an attempt to satisfy the bandwidth requirements of a given 
wideband call. If one facility does not have enough available bandwidth to support 
a given call, or it is not used for a given call due to the constraints presented in the 
following section, then the algorithm...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
429 Wideband Switching 
15
Note that on a T1 facility, a D-channel is not considered a busy trunk and results in 
a facility with a D-channel always being partially contaminated. On an E1 facility, 
however, a D-channel is not considered a busy trunk because H11 and H12 calls 
may still be placed on that facility; an E1 facility with a D-channel and idle 
B-channels is considered an idle facility.
H12...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
430 Wideband Switching 
15
N x DS0
For the N x DS0 multi-rate service, a trunk group parameter determines whether a 
floating or a flexible trunk allocation scheme is to be used. The algorithm to 
satisfy an N x DS0 call is either floating or flexible.
nFloating (Contiguous) — In the floating scheme, an N x DS0 call is placed 
on a contiguous group of B-channels large enough to satisfy the requested...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
431 Wideband Switching 
15
Glare and blocking
Glare prevention
Glare occurs when both sides of an ISDN interface select the same B-channel for 
call initiation. For example, a user side of an interface selects the B-channel for an 
outgoing call and, before the switch receives and processes the SETUP message, 
the switch selects the same B-channel for call origination. Since any single 
wideband call uses...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
432 Wideband Switching 
15
Administering Wideband Switching
Before you start
You need a DS1 Converter circuit pack. Refer to the DEFINITY ECS System 
Description for more information on the circuit pack.
Instructions
To administer wideband switching:
1. On the Access Endpoint screen, administer all fields. 
Refer to ‘‘
Access Endpoint’’ on page 467 for more information.
2. On the PRI Endpoint screen,...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
433 Wideband Switching 
15
nAutomatic Circuit Assurance 
Treats wideband calls as logical single-trunk calls so that a single 
ACA-referral call is made if an ACA-referral call is required. The call is 
referred to the lowest B-channel associated with the wideband call.
nCall Coverage
A wideband endpoint extension cannot be administered as a coverage point 
in a call-coverage path.
nCall Detail Recording...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
434 CallVisor Adjunct-Switch Application Interface 
15
nGeneralized Route Selection
GRS supports wideband BCC to identify wideband calls. GRS searches a 
route pattern for a preference that has wideband BCC. Route preferences 
that support wideband BCC also can support other BCCs to allow different 
call types to share the same trunk group.
nCO Trunk (TTC - Japan) Circuit Pack
This circuit pack cannot...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
435 CallVisor Adjunct-Switch Application Interface 
15
Figure Notes
Figure 15. ASAI Switch Interface Link — BRI Transport
ASAI Capabilities
For information concerning the types of associations over which various event 
reports can be sent, refer to DEFINITY ECS CallVisor ASAI Technical Reference.
Considerations
nIf your system has an expansion cabinet (with or without duplication), 
ASAI resources should...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Managing data calls 
436 Setting up CallVisor ASAI 
15
Setting up CallVisor ASAI
CallVisor Adjunct-Switch Applications Interface (ASAI) can be used in the 
telemarketing and help-desk environments. It is used to allow adjunct applications 
to monitor and control resources in the DEFINITY ECS.
Before you start
nOn the System Parameters Customer-Options screen, verify the:
— ASAI Interface field is 
y. If not, contact your...