Advantages of the TTT-GMP and GFP-T encapsulation modes for GE services

61

The TTT-GMP encapsulation mode can better support synchronous Ethernet, and GFP-T can transparently transmit data packets with low latency.

Other related questions:
Difference between TTT-GMP and GFP-T
TTT-GMP and GFP-T are two encapsulation modes of GE services. They are different in physical clock synchronization modes and transcoding modes. GFP-T implements timing transparent transcoding (TTT). TTT-GMP complies with ITU-T G.709, and implements asynchronous transcoding.

Difference between GFP-T and TTT-GMP encapsulation formats of the TOA board
In the GFP-T encapsulation format, client equipment connected to the TOA boards does not perform negotiation with the TOA boards. Instead, client equipment at two ends negotiates with each other directly. In the TTT-GMP encapsulation format, client equipment performs negotiation with the TOA boards.

Difference between the GE and GFP-T service modes
In the GE service mode, Ethernet port working modes are negotiated between WDM boards and client-side ports. In the GFP-T service mode, Ethernet port working modes are negotiated between client-side ports on both sides, and WDM boards transparently transmit negotiation signals.

Difference between GFP-T and GMP-PPP encapsulation modes on the TOA board
In the GFP-T encapsulation mode, the client-side port does not perform negotiation with the TOA boards. Instead, client devices at two ends negotiate with each other directly. In the GMP-PPP encapsulation mode, the client-side device performs negotiation with the TOA boards.

Major difference between GE (GFP-T) and GE (GFP-F) encapsulation modes at the client side of the TOM board
GE (GFP-F) can detect and respond to negotiation packets of the Ethernet working mode. It supports autonegotiation. GE (GFP-T), like an optical fiber, implements negotiation of the Ethernet working mode between the data devices interconnected with the TOM boards.

If you have more questions, you can seek help from following ways:
To iKnow To Live Chat
Scroll to top