HP Vectra 520 Guia de Instalação Página 252

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Modems 5-89
Meridian MAX
Installation Guide
Product release 8
T1 connection for NAC connectivity
The NAC system can be connected to a Meridian MAX node through
digital lines such as a T1 digital line. During the system’s installation, the
network link port on the NAC and the Meridian MAX must be configured
as direct connection ports. On the NAC system, the network link baud rate
should be set to 9600 through the Network Definition screen.
The T1 ports (Data Module or DSU) for the network link should be set up
as follows:
asynchronous
full duplex
9600 baud
8 data bits, no parity, 1 stop bit
T1 network delay must be less than 0.5 second
RS-232/C
DCE or DTE (DCE is recommended)
If the T1 port for the network link provides a DB-25 interface, then the
network link is connected as follows:
If the T1 port is configured as DCE, then the modem cable
NT7D99AA (SNN/SNN-E) or NT1R03HF (IPE/IPE-E) is used to
connect the T1 port to the IPE/IPE-E four-port I/O cable or the
SNN/SNN-E VME multiport cable’s network link port on the Meridian
MAX.
If the T1 port is configured as DTE, then the terminal cable
NT1R03Dx is used to connect the T1 port to the IPE/IPE-E four-port
I/O cable or SNN/SNN-E VME multiport cable’s network link port on
the Meridian MAX.
Note that it is desirable to have both ports of the T1 link configured as
DCE. Setting up both ports as DTE is not recommended.
If the T1 data bank does not provide a DB-25 interface, then a patch panel
or similar equipment should be installed to provide the required RS-232/C
interface. In this case, the T1 connection will be from the patch panel to the
corollary terminal concentrator in the NAC or the four-port cable in the
Meridian MAX systems.
telemanuals.com
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