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OnSite 2800 Series User Manual | 5 • T1/E1 port configuration |
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Configuring T1/E1 framing
Four framing formats are available for selection on the T1/E1 port. Unframed can only be used if the encapsu- lation is set for hdlc. All other currently available upper layer (encapsulation) protocols do not run in unframed mode, but in one of the framed modes.
In structured mode, E1 can be configured for crc4 or
The advantage of the unframed mode (obviously with hdlc encapsulation) is the utilization of the whole link speed for user data transmission, 2.048MBit/s for E1 and 1.544MBit/s for T1. However note that HDLC has its own overhead which decreases the actual data rate.
Mode: port e1t1 <slot> <port>
Step | Command | Purpose |
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1 | [name] | Configures the framing of the port. |
| {crc4 | E1 mode formats are: crc4, |
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| T1 mode formats are: esf, unframed. |
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| Default for e1: crc4 |
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| Default for t1: esf |
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Configuring T1/E1 line-build-out (T1 only)
The line build out configuration is used in long haul applications to prevent cross talk in the far end device.
Mode: port e1t1 <slot> <port>
Step | Command | Purpose |
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1[name]
out {0 | face. Default for t1: 0 dB |
Configuring T1/E1 used-connector (E1 only)
The E1 WAN port provides several line interface connector types,
Mode: port e1t1 <slot> <port>
Step | Command | Purpose |
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1 | [name] | Specifies the currently used connector. |
| nector {bnc rj45} | Default for e1: rj45 |
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T1/E1 port configuration task list | 61 |