DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1210PGATE-PT (Packet Gateway Port)
9
PGATE-PT (Packet Gateway Port)
The TN577 Packet Gateway circuit pack p rovides connectivity from the swi tch to
adjuncts or to other switc hes in a Distributed Communications System (DCS).
Ports on the TN577 perform statistical multiplexing of data connections b ased on
the X.25 data communication p rotocol standard. An X.25 Acces s Link must be
established between the Pack et Gateway port and the adjunc t or DCS switch
prior to the connection of any data sessions on the port. Such d ata connections
consist of X.25 packet-data streams which entering the Packet Gateway port and
are transported by Packet Gat eway circuitry to the pac ket bus and then to other
endpoints on the bus. An X.25 Ac cess Link is illustrated in the des cription of the
Link Status Test (#614).

Packet Gateway Applications

The following application s and adjuncts use pac ket gateway ports:
■AUDIX
■Call Management System (CMS)
■Distributed Calling System (DCS)
■ISDN Gateway Adjunct
■Message Server

Packet Gateway Configurations

X.25 li nks c onnec t to th e SPE via t he pa cket b us an d the TN1655 Packet
Interface circuit p ack. In addition to the c onfigurations shown, a long d istance
modem can connec t directly to one of the external p orts on the Packet Gateway
circuit pack to c onnect to data networks inc luding private lines, Datap hone II
networks, and Digital Data Service (DDS) networks. Disregard the references to
notes in the following figures.
MO Name (in
Alarm Log) Alarm Level Initial Command to Run1
1.
UU
is the universal cabinet number (1 for PPN, 2 - 44 for EPNs).
C
is the carrier designation (A, B,
C, D, or E).
SS
is the number of the slot in which the circuit pack resides (01 to 21).
pp
is the two
digit port number (01, 02, ...).
Full Name of MO
PGATE-PT MAJOR test port UUCSSpp long X.25 Port Maintenance
PGATE-PT MINOR test port UUCSSpp long X.25 Port Maintenance
PGATE-PT WARNING test p ort UUCSSpp X.25 Port Maintenance