Network Services Units; Universal Network Services Unit - Mitel 3300 General Information Manual

• 512 MB of RAM on the mid-plane
• Embedded DSP on the mid-plane
• 128-channel echo canceller module
Optional Configuration
• E2T controller card (MMC-C)
• DSP module for G.729a compression
• Up to three Dual FIMs for connecting NSUs, peripheral units, and DSUs
• Up to three Dual T1/E1 modules
• Up to three T1/E1 Combo cards
• Up to three Quad BRI Framer modules
• Analog Main Board for embedded analog trunks and lines
• RAID (Redundant Array of Independent Disks) module
• AC PSU

Network services units

The Network Service Units provide connectivity to digital trunks for public or private networks.
Protocol support includes DASS II, PRI, MSDN/DPNSS, R2, T1/ D4, E1, Q.Sig, and XNET.
There are two variants of NSU:
•

Universal Network Services Unit

• R2 Network Services Unit
For detailed information on the hardware specifications, refer to the Hardware Technical
Reference Manual.
Universal Network Services Unit
The Universal NSU provides T1 or E1 connectivity and supports up to two T1 or E1 links per
unit. The protocols supported by the T1 interfaces are
• T1 CAS - Digital E&M, Digital CO, Digital DID
• T1 CCS - Primary Rate ISDN (4ESS, DMS 100, DMS 250, NI-2, NI-2-5ESS, NI-2-GTD5,
NI3, IDA-P), XNET over PRI, QSIG, and MSDN/DPNSS
The protocols supported by the E1 interface are:
• Q.Sig, Euro ISDN, XNET over PRI, DASS II, and MSDN/DPNSS
Note: .Both interfaces must be either T1 or E1 and both must be T1 CAS or DPNSS or
DASSII or PRI/QSIG. For T1/D4 and PRI/QSIG, you can mix the variants on each
interface. For example, on T1/D4 you can mix the types on each interface (DID, CO,
E&M) and for PRI/QSIG you can run different protocols for the signalling types.
System
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