we are a supplier of hosted telephony, business telephone systems and it supportBT Ambassador Telephone System Maintenance
The BT Ambassador was originally known by it's development name of "Electronic Plan System (EPS)". The Ambassador ESS (AESS) is a microprocessor controlled switching system produced in two different sizes, AESS 1+3 (1 exchange line and up to 3 extensions) and AESS 2+4 (up to 2 exchange lines and up to 4 extensions). Both types can have AESS 1 or AESS 2 software, later production AESS 2+4 with Mk 2 hardware has AESS 2 software only. All AESS central control units (CCU) are externally similar (the 2+4 CCU is larger than 1+3) and all AESS systems with AESS 2 software were marketed as 'AESS 2'.
BT Senator Telephone System Maintenance
Manufactured by GEC the Senator system came as a Mk1 or Mk2 system and both had an ultimate configuration of 5+10. When the Merlin trading arm of BT took over marketing of business systems the Senator Mk 2 became the S4022. The Senator system case was wall mounted and had an integral MDF. Adaptors could be supplied to cover 2 wire external extensions, inter PBX circuits and extension bells. These adaptors would be wall mounted along side the system box.
The terminals used are the same ones used on the Ambassador system but a 10 memory type (Telephone 8550) was introduced that was not sold as a Senator terminal. These telephones are connected by four wires to the CCU are are connected via PST sockets. The style of telephone was changed in the mid to late eighties, away from the generic Ambassador telephone style. The later Ambassador/Senator system telephone is shown on the right.
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