Perform data configuration on the OLT. When adding a gemport, usually select the type of service carried by the gemport. Which of the following business types does gemport support?

Question

Options

• AETH
• BPOTs
• CTDM
• DE1

• A
  77% (43)
• B
  7% (4)
• D
  16% (9)

Explanation

GEM (GPON Encapsulation Mode) ports are logical channels in GPON networks that carry traffic between the OLT and ONUs, and they are configured to support two primary bearer service types: ETH (Ethernet) for data and IP-based services, and TDM (Time Division Multiplexing) for legacy circuit-based voice and leased-line traffic. These two types correspond directly to the fundamental traffic categories that GPON must transport over the passive optical network.

POTs (Plain Old Telephone Service) is not a GEM port service type because it is an end-user application service, not a transport-layer bearer; POTS voice is actually delivered either via TDM circuits or over Ethernet using VoIP protocols, so it is already covered by options A and C. E1 is a specific 2.048 Mbps TDM circuit standard, not a separate GEM port classification - E1 traffic is encapsulated and carried under the TDM service type, making it a subset of option C rather than a standalone type.

Memory tip: Think of GEM port types as transport containers - ETH carries packets, TDM carries circuits. Any specific service (POTS, E1, VoIP) is cargo that fits inside one of those two containers, not a container type itself.

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