Lucent Technologies DEFINITY Enterprise Communications Server Release 8.2 Instructions Manual

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
417 Data Restriction 
15
nIntercom — Automatic and Dial
An extension with Data Privacy or Data Restriction active cannot originate 
an intercom call. The user receives an intercept tone.
nMusic-on-Hold Access
If a user places a call with Data Privacy on hold, the user must withhold 
Music-on-Hold to prevent the transmission of tones that a connected data 
service might falsely interpret as a data...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
418 Data Restriction 
15
nIntegrated Services Digital Network-Primary Rate Interface 
(ISDN-PRI)
nRelease-Link Trunk (RLT)
nTandem
nTie
nWide Area Telecommunications Service (WATS)
Interactions - Data Restriction
nAttendant Call Waiting and Call Waiting Termination
If Data Restriction is active, Call Waiting is denied.
nBusy Verification
Busy Verification cannot be active when Data Restriction is...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
419 Data-Only Off-Premises Extensions 
15
Data-Only Off-Premises Extensions
Data-Only Off-Premises Extensions allows users to make data calls involving 
data communications equipment (DCE) or digital terminal equipment (DTE) 
located remotely from the system site.
A Data-Only Off-Premises Extension uses an on-premises modular trunk data 
module (MTDM). The system communicates with remote data equipment...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
420 Data Modules — general 
15
— Return-to-Voice
To establish a data call, the telephone user presses the associated 
busy Data Extension button to transfer the call to the telephone. The 
data module associated with the Data Extension button is 
disconnected from the call. The Call in Progress lamp on the data 
module goes dark.
Data Modules — general
A Data Module is a connection device between a...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
421 Data Modules — general 
15
Detailed description of data modules
TTI allows data modules without hardware translation to merge with an 
appropriate data module connected to an unadministered port. The 
unadministered port is given TTI default translation sufficient to allow a terminal 
connected to the data module (connected to the port) to request a TTI merge with 
the extension of a data module...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
422 Data Modules — general 
15
7400C High Speed Link
The 7400C high-speed link (HSL) is a data-service unit that allows access to DCP 
data services. It provides synchronous data transmission at speeds of 56- and 
64-Kbps and provides a link to high-speed data networks. Used for Group 4 fax 
applications that include electronic mail and messaging, and electronic storage of 
printed documents and...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
423 Administered Connection 
15
Administered Connection
An Administered Connection (AC) is a connection between two access or data 
endpoints. DEFINITY ECS automatically establishes and maintains the 
connection based on the attributes you administer. ACs provides the following 
capabilities.
nSupport of both permanent and scheduled connections
nAuto Restoration (preserving the active session) for...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
424 Administered Connection 
15
Access endpoints
Access endpoints are non-signaling trunk ports. They neither generate signaling to 
the far-end of the trunk nor respond to signaling from the far-end. Designate an 
access endpoint as the originating endpoint or destination endpoint in an AC. 
Typical AC applications
The following are typical AC applications:
nA local data endpoint connection to a local...

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
425 Administered Connection 
15
AC attempts can fail for the following reasons:
nResources are unavailable to route to the destination.
nA required conversion resource is not available.
nAccess is denied by class of restriction (COR), facilities restriction level 
(FRL), or bearer capability class (BCC). Or, an attempt is made to route 
voice-band-data over SDDN trunks in the public switch network....

DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1.1
June 2000
Managing data calls 
426 Administered Connection 
15
If an AC drops because it was disabled/removed or is no longer due to be active, 
no action is taken. If an AC drops because of changed AC attributes, an immediate 
attempt is made to establish the connection with the changed attributes if it is still 
due to be active. Existing entries in the error/alarm log are resolved if they no 
longer apply. If handshake failure...