Ambulance Service of Manchester | 1,264 followers on LinkedIn. The Ambulance Service of Manchester, LLC (ASM) provides Emergency Medical Services (EMS) to Manchester, East Hartford and Bolton. ASM also provides paramedic intercept services to Glastonbury, South Windsor, Stafford Springs and Somers. ASM responds to Basic Life Support (BLS) and Advanced Life Support (ALS) 9-1-1 requests to many surrounding communities in Hartford, Tolland and Windham Counties.