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ADTRAN NetVanta Series Quick Configuration Manual page 4

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4
Creating the E1 Interface TDM Group
The following steps demonstrate configuring an E1 network interface with timeslots 1-
15 for data.
1. At the (config-e1 1/1)# prompt, enter framing crc4 .
2. Enter sa4tx-bit 0 .
3. Enter tdm-group 1 timeslots 1-15 speed 64 to create a TDM group for timeslots 1-
15 (the data timeslots) on the E1 network connection (e1 1/1).
4. Enter no shutdown to activate the interface.
5. Enter interface e1 1/2 to activate the interface configuration mode for the G.703
network interface.
6. Enter no shutdown to activate the interface.
7. Enter exit to return to the global configuration mode.
The NetVanta automatically maps timeslots 1-31 from the network connection of the E1/FE1
+ G.703 NIM to the G.703 port. Creating a TDM group removes the specified timeslots from
the G.703 map. All remaining timeslots not included in the TDM group will be passed from
the network port (e1 1/1) to the G.703 port (e1 1/2).
Voice circuits require timeslot 16 for signaling. If voice is required on the e1 1/2 G.703 port,
the largest data map which can be configured is timeslots 1-15 (leaving 17-31 for voice) or
17-31 (leaving 1-15 for voice).
Timeslot 0 is for synchronization, alarm transport, and international carrier use. It is not
accessible for use for voice or data.
Skip to step 7 for PPP configuration.
4
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