July 2003
NEC Business Solutions Ltd
570 – T1
Tandem Switching of 4-Wire E&M Tie Lines
Doc. No. 8
201 - Re
lease 1.0
July 2003
General
The Xen IPK Expanded system can handle a maximum of 32
simultaneous tandem calls.
The Xen IPK Basic system can handle a maximum of 8 simultaneous
tandem calls.
After a tandem connection is completed, the trunks disconnect (restore
to idle) when either party hangs up and a disconnect signal is received
by the corresponding trunk or the Automatic Disconnect Timer (default:
60 minutes) elapses.
Tandem Switching of E&M Tie Lines can be accomplished through
several Xen IPK systems.
The local Xen IPK system can be programmed to restrict individual
station users access to specific E&M Tie Lines. Each station can be
programmed to restrict the maximum number of digits dialled on an
E&M Tie Line by assigning Code Restriction.
Access to outside lines by an E&M Tie Line user is recorded by SMDR
on the system where the CO line is connected. The originating system
may also record the station that accesses an E&M Tie Line call via its
own SMDR.
Tandem connection can be allowed or denied per Trunk group for one
or both directions.
Tie/DID lines can be assigned to add up to two digits and/or delete up
to two digits per Trunk group as needed in System Programming.
RELATED
FEATURES LIST
Feature
Number
Feature Name
E-3
E&M Tie Lines (4-Wire)
U-2
Uniform Numbering Network
