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A. Configuration Options
8700-A2-GB20-40 May 2002
A-5
Table A-2, Payload Rates and DSL Line Rates for Model 8777, and Table A-3,
Payload Rates and DSL Line Rates for G.703, provide the maximum payload rates
achievable for each DSL line rate and the number of time slots required to achieve
that payload rate. For G.703, the payload rate depends on whether you are using
signaling (time slots 0 and 16) or data only (time slot 0).
DS0 Cross Connect Line Framing
(Model 8777, LTU)
Possible Settings: ESF, D4
Default Setting: ESF
Specifies the framing format to be used at the DSL interface for DS0 cross connects,
regardless of the framing format specified for the DSX-1 ports.
DS0 Cross Connect Line Framing is only available on the Model 8777, only when
the unit is configured as an LTU, and only when the port is in a DS0 cross connect.
ESF – ESF framing formatting is used for transmitted and received data over the DSL
Interface.
D4 – D4 framing format is used for transmitted and received data over the DSL Interface.
Circuit Identifier
Possible Settings:
ASCII text field
Default Setting: [blank]
Uniquely identifies the circuit number of the transmission vendor’s DSL line for
troubleshooting purposes.
ASCII text field
– Enter a maximum of 128 characters. All printable ASCII characters
except the ^ (caret) are allowed.
Clear – Clears the field.
Table A-2. Payload Rates and DSL Line Rates for Model 8777
DSL Line
Rate
(Kbps)
DSX-1-to-DSX-1 DSX-1- to-EIA-530-A
Payload Rate
(Kbps)
Time
Slots
Payload Rate
(Kbps)
Time
Slots
1552 1536 24 1536 24
1040 960 15 1024 16
784 704 11 768 12
528 448 7 512 8
400 320 5 384 6
272 192 3 256 4
144 64 1 64, 128 1, 2
Table A-1. Network Interface Options (4 of 4)