SS7, 5ESS, DMS, GTD-5

Legacy TDM & SS7 NOC Operations

Maintaining yesterday’s platforms with today’s discipline

Mikkena’s Legacy NOC Division supports TDM and SS7 platforms that still carry critical voice traffic, providing skills that modern teams often lack.

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Technology scope

SS7: routing, linkset management, point codes, global title translation and signalling troubleshooting.
5ESS (5E): trunk maintenance, translations, routing tables and call-processing behaviour.
DMS-10 & DMS-100: line modules, remote switching, trunk control, routing plans and diagnostics.
GTD-5 / GTD-5 EAX: rural/central office switching, maintenance routines, line testing and signal analysis.
Other TDM & circuit switching: trunk groups, GR-303, ISUP, T1/E1 cross-connect and SS7 network health.

NOC support

24/7 monitoring of switch alarms, trunk outages, signalling failures and call anomalies.
Troubleshooting of trunk groups, SS7 links, translations, routing and service-impacting anomalies.
Preventive maintenance, diagnostics and performance analysis on ageing hardware.
Coordination with central office, field and modernisation teams.
Support for TDM decommissioning and migration planning.

Why Mikkena’s legacy team is critical:

Very few organisations still maintain deep SS7 and TDM expertise; Mikkena provides the operational continuity needed while networks transition to VoIP and IM