Cabling and Connector Specifications
T1/PRI interface specifications
APX 1000™ Getting Started Guide
C-9
T1 RJ-48C-Loopback plug
The RJ-48C-Loopback plug loops the transmit signal back to the APX 1000 unit. Table C-8
shows the pinouts.
T1/PRI WAN connector pins
Table C-9 lists the pins on the T1/PRI WAN port used for transmitting and receiving. The
remaining pins are not connected.
WAN switched services available to an APX 1000 unit
APX 1000 units are compatible with both AT&T and Northern Telecom central office
switches, and can access all T1/PRI switched digital services offered by AT&T's ACCUNET
Switched Digital Services:
•
MCI 56Kbps and 64Kbps services.
•
Sprint Switched 56Kbps and 64Kbps services.
•
MultiRate and GloBanD primary rate interface (PRI) network services, and global virtual
private network services (GVPN).
Note:
APX 1000 units can only access Switched 56Kbps services on a T1 access line or a
Switched-56 line.
For a listing of the compatible switch types, see the Switch-Type parameter listing in the
APX 8000™/MAX TNT® Reference. In addition to connecting to switched circuits, an
APX 1000 unit can connect to dedicated (leased or nailed) circuits and to aggregate dedicated
and switched circuits.
Table C-8. RJ-48C-Loopback plug specifications
Pair
Signal
(at the APX 1000)
Male RJ-48C
1
Receive
1 (connects to 5)
2 (connects to 4)
2
Transmit
5 (connects to 1)
4 (connects to 2)
Table C-9. Transmit and Receive pins
APX 1000 T1/PRI interface
RJ-48C DTE
Receive (input) pair, tip (T1)
Receive (input) pair, ring (R1)
Position 2
Position 1
Transmit (output) pair, tip (T)
Transmit (output) pair, ring (R)
Position 5
Position 4