Total Access
®
3000/3010 System Manual
6TAAPP341-1E
TOTAL ACCESS 3000/3010
APP-341
Page 1 of 2
© 2002, ADTRAN, Inc.
1.1
STS-1 Multiplexer Applications
NOTE
References to common, but differing, parameters between the Total Access
3000 and the Total Access 3010, such as number of slots, will be conveyed
by the convention a/b. The “a” represents the Total Access 3000 parameter
and the “b” represents the Total Access 3010 parameter. For example, the
differing number of access slots in the two platforms, 28 for the Total Access
3000 and 22 for the Total Access 3010, would be displayed “28/22.”
1.1.1
Usage
The STS-1 multiplexer for Total Access converts the system into one that can accept a
single STS-1 network interface. A system with a STS-1 multiplexer can accept STS-1
and DSX-1 network interfaces, where the DSX-1 network interfaces are provided
directly to the access modules. The STS-1 multiplexer incorporates time slot
assignment to deliver any VT 1.5 (or VT 6) in the STS-1 to any slot in the system.
This allows for certain slots to have DSX-1 network interfaces, other slots to have a
network interface from the STS-1 multiplexer and no necessary loss of DS1s in the
STS-1 because certain slots have DSX-1 network interfaces.
The STS-1 multiplexers can be configured as simplex or redundant, with protection for
the electronics, not the coaxial cable. If redundant, two units are installed. If not, a
single STS-1 multiplexer may be installed in either of the two multiplexer slots.
Regardless of whether one or two are used, the BNC I/O Module (P/N 1181004L1) is
required to derive the physical STS-1 network interface.
The STS-1 multiplexer is used when a number of VT 1.5s are delivered from one
location to a Total Access 3000/3010 System via a SONET signal. Typically, this
STS-1 interface will be delivered to the Total Access 3000/3010 System from either a
DCS or SONET multiplexer. With a STS-1 multiplexer installed, the system still
accepts DSX-1 network interfaces to the access modules, so a locally-derived DS1
network interface can be delivered directly to the system and does not need to be sent
over the high-speed multiplexer.
Figure 1
below illustrates the use of an STS-1 MUX
in a SONET Ring application.
Figure 1. SONET Ring to Total Access 3000/3010
HST
C
R
A
F
T
S
C
U
S
T
S
1
S
T
S
1
H
T
U
C
H
T
U
C
SONET
MUX
SONET Ring
STS-1
STS-1
SONET
MUX
