S30817-Q0926-A308-04 Siemens HiPath 3550 PBX Expansion Card

The Siemens S30817-Q0926-A308-04 is a TLA8 analogue trunk card designed for the HiPath 3550 private branch exchange system. This card provides eight analogue trunk line interfaces, enabling connection to the public switched telephone network (PSTN) or analogue CO lines for inbound and outbound voice communications.

The TLA8 card is an expansion module for the Siemens HiPath 3550, a mid-range PBX platform designed for small to medium-sized business telephony deployments. It allows organisations to maintain analogue trunk connectivity alongside digital or IP-based telephony infrastructure within the HiPath 3000 series environment.

The HiPath 3550 and its associated line cards are legacy products, with Siemens having transitioned its enterprise communications portfolio to Unify. However, many HiPath 3550 systems remain in active service, and spare or replacement cards such as the TLA8 continue to be sought for system maintenance and capacity expansion.

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