Hello Ramakrishna,
You replied:
So, GFP-F/ GFP-T can perform the encapsulation of variable/ constantIndeed.
bit rate signals. And GMP is not a necessity in either of the cases.
Is there something that GMP can do but GFP cannot? If not, can we sayYes, GMP can be used for any new client signal. From now on it is not necessary to standardise the mapping for any new client signal.
GFP can replace GMP? (I am ignoring the cost, even if it is a factor driving that choice).
This was mandatory in the past, before GMP was introduced.
So conclusion: always use GMP because it is simpler, cheaper.
The GMP circuit can be re-used. Only the receiver and transmitter
circuits for each new signal will be different.
Best regards, Huub.
On Tuesday, August 25, 2015 at 7:27:20 PM UTC+5:30, Huub van Helvoort wrote:
Hello Ramakrishna,
You replied:
Just to be clear..
For variable bit rate client signals, the two stage process is:
step1: GFP-F would map the variable bitrate client signals onto OPUk
Yes, this is correct.
Note that GMP is not needed, because GFP can fill the OPU completely.
step2: OPUk gets mapped into ODUk using GMP. Correct?
No, the OPU is part of the ODU, the difference between OPU and ODU is
only the overhead bytes.
But On the other hand, in case of constant bit rate client signals,When GFP-F or GFP-T is used the GFP will completely fill the OPU
is GFP-T necessary followed by GMP? GMP alone seems to be sufficient? >>
no GMP is required.
Best regards, Huub.
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