July 2003
NEC Business Solutions Ltd
600 – U3
Universal Slots
Doc. No. 8
201 - Re
lease 1.0
July 2003
Trunk Interface Units
Description
Maximum Capacities
Notes
Basic Port
Package
Expanded
Port Package
BRT (4)-U( ) ETU
4-port ISDN Interface for 8 trunks
2
8
Note 1
COI(4)-U( ) ETU
4-port CO/PBX Line Interface
4
16
Note 1
COI(8)-U( ) ETU
8-port CO/PBX Line Interface
2
8
Note 1
DID (4)-U( ) ETU
4-port Direct Inward Dialling Interface
4
18
Note 1
IPT(4)-U( ) ETU
4-port Voice over Internet Protocol
Trunk Interface
4
15
Note 1, 4
IPT(8)-U( ) ETU
8-port Voice over Internet Protocol
Trunk Interface
2
7
Note 1
PRT(1)-U( ) ETU
ISDN-Primary Rate Trunk Interface
4
8
Note 1, 3~5
TLI (2)-U( ) ETU
2-port Tie Line Interface
4
16
Note 1, 2
NOTE 1:
Calculating maximum capacities are based on the system having a minimum of 8 Electronic Station
Interface (ESI) ports and 4 Trunk ports.
NOTE 2:
When 2-port Trunk Interface ETUs are installed, the system uses four ports from its maximum port
capacity.
NOTE 3:
With the Basic Port Package, a maximum of four PRT(1)-U( ) ETUs can be installed. When four PRT
ETUs are installed, up to four trunks each can be assigned.
NOTE 4:
With the Xen IPK Expanded Port Package, a maximum of 14 of the following 4-port trunk-type
interface ETUs can be installed:
z
IPT(4)-U( ) ETU [installed as a COI/COID(4)-U( ) ETU]