Troubleshooting guide

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Install and Replace Units
• Upgrading to embedded PRI, T1/D4, MSDN/DPNSS, or BRI requires
a minimum 300 MHz controller (see "Migrate SX-2000 PBX Hardware"
on page 404). To determine the speed of your processor, see “Check
Controller Hardware Profile” on page 118.
• The Dual T1/E1 Framer does not support XNET, Min/Max, or NFAS.
Dual T1/E1 Framer
• Each Dual T1/E1 Framer has 2 ports (RJ-45 connectors), each of
which can be used for T1/E1 ISDN or T1/D4. The two protocols can
operate in tandem on the same Dual T1/E1 Framer with any ISDN
variant, i.e. PRI and QSIG.
• T1/D4 provides for digital E&M, digital DID, or digital CO protocols.
T1/E1 ISDN provides for DMS-100, DMS-250, NI-2 (Bellcore National
ISDN, 5ESS, GTD5), Euro ISDN, 4ESS, Euro-ISDN (CTR4), HKIDAP,
and QSIG protocols.
T1/E1 Combo
• The T1/E1 combo module, available only for the CX/CXi and
CX II/CXi II controllers at Release 6.0, combines trunking (T1D4 and
PRI ISDN/QSIG) and DSP functionality in a single card. The Release
6.0 version of the combo contained a single T1/E1 framer. The module
also includes 32-channel Echo Cancellation.
• Supported on the MXe controller.
• Release 7.0 included a resilient connection for the combo. You can
connect T1/E1 Combo cards in a primary and a secondary controller,
for resilient operation, with a one-to-one RJ-45 cable. Enable the
resilient feature in the Digital Links form. Refer to the Resiliency
document on Edocs (http://edocs.mitel.com) for instructions on how to
configure T1/E1 resiliency.
• Resilient operation requires that both the primary and secondary
controllers are running Release 7.0 or later software. The secondary
controller may be configured with the new or old version T1/E1 Combo
card or a Dual T1/E1 Framer module.
Quad BRI Framer
• BRI (Basic Rate Interface) is a basic ISDN service consisting of two 64
Kbps channels and a single 16 Kbps channel (see page 250 in the
Hardware Reference chapter for connection details)
• The Quad BRI Framer is not supported in North America.