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Preliminary November 4, 1998
MAX 4000 Series Hardware Installation Guide
Setting Up and Testing the MAX Hardware
Connecting the MAX to the T1 Line
Connecting the MAX to the T1 Line
To connect your MAX to the T1 line:
1
Connect the MAX either directly to the T1/PRI line or through other network interface
equipment.
Note:
To connect to the demarcation point, where the T1/PRI line’s metallic interface
connects to other equipment, the MAX T1/PRI ports must be configured to utilize the
unit’s internal Channel Service Units (CSUs). Otherwise, you must install external CSUs
or other network (WAN) interface equipment between the MAX and the demarcation
point.
Enable the internal CSU by setting the Net/T1 > Line Config > Line N > Front End
parameter to CSU. Disable the internal CSU by setting Front End to DSX.
2
Inform your T1/PRI service provider that your equipment is connected, so that they can
bring up the line.
Before you start up the MAX, familiarize yourself with the indicator lights (LEDS).
(See“Interpreting the MAX LEDs” on page 2-9.)
Connecting the MAX to an E1 Line
The MAX can connect to any DPNSS access point on a Private Branch Exchange (PBX) or
directly to E1 digital services. Use a cable that is specifically constructed for transmission of
E1/PRI signals (CCITT G700 series recommended). The MAX can also connect to G.704
framed leased (non–switching) services for 75 ohm lines. (Use cable 2510-0272-001 with 75
ohm E1 lines.) Unless connecting to your PBX, connect your MAX to the E1 PRI network
interface (TA) equipment supplied by your PTT.
Grounding
The screen (shield) of the transmit and receive coaxial cable must be earthed at one end of the
line only. Links (jumpers) inside the MAX chassis earth the coaxial screens. The default
position of the grounding links on the network line interface, when used with coaxial cable
adapter, is on the transmit side (Tx) for 1680 Kbps network operations.
Figure 2-8. One set of links for each E1 port
For a daisy chain connection of the MAX E1/PRI unit, only line 1 needs an earth link (jumper),
because line 1 is the only port connected to the telecommunications network.
4 E1 ports
120
75