1.10 Conversation Features88 Feature Guide1.10.8 Paralleled TelephoneDescriptionBy connecting telephones in parallel, you can increase the number of telephones connected to the PBXwithout adding additional extension cards.Both wired and wireless telephones can be connected in parallel. Single line telephones (SLTs) and analogproprietary telephones (APTs) can be connected to other telephones or connectors, allowing twotelephones to be connected to the PBX through just one extension port. Additionally, portable stations (PSs)can be linked to other telephones wirelessly and be used as a "paired" extension.The different type of parallel connections are described below.Conditions[APT + SLT]• If one telephone goes off-hook while the other is on a call, a three-party call is established. If one usergoes on-hook, the other user continues the call.• An extension user cannot originate a call from the SLT if the APT is:– playing background music (BGM)– receiving a paging announcement over the built-in speaker.Features Descriptions ConnectionsParallel Mode Allows an SLT to be connected to an APT which isconnected to a preinstalled hybrid port of the PBX.When the two telephones are connected in parallel mode:• Both share one extension number (APT'sextension number).• Either telephone can make or answer calls.Wireless XDPParallel ModeFor information on this type of parallel connection, refer tothe Wireless XDP Parallel mode feature. (→ 1.20.3Wireless XDP Parallel Mode)PBXAPT + SLTAPTExtn. 102 Extn. 102SLTPBXPSAPTAPT/SLT + PSPSSLTExtn. 101Extn. 101Extn. 102Extn. 102
