Lines Settings
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Status |
Status of the line as reported by the PortMaster, up or down. |
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Status 2 |
The status of layer 2, as reported by the Portmaster, up or down. |
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Line Type |
Note - T1 and E1 settings are mutually exclusive and depend on the PortMaster mode. ISDN Uses the line as PRI B channels (default). T1 Uses the entire line as a T1 line. E1 Uses entire line as an E1 line. FRACTIONAL Divides the line into groups. INBAND Sets the line for inband signaling for channelized T1 and E1. Signaling must also be set. |
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Signaling |
When the line type is inband---for channelized T1---the type of inband signaling protocol in use: trunk e&m wink start E & M wink start protocol, an option for use with T1 lines (Default). trunk e&m immediate start E & M immediate start protocol. fxs loop start Foreign exchange station (FXS) loop start protocol. |
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Profile |
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Framing |
Framing format in use for the T1 or E1 line: ESF Extended superframe---default for T1. D4 D4 framing, alternative format for T1. CRC4 Cyclic redundancy check 4---E1 default. FAS Frame Alignment Signal---alternative format for E1. NONE |
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Encoding |
Encoding method in use for T1 and E1 lines: b8zs Bipolar 8-zero substitution---T1 default. ami Alternate mark inversion. hdb3 High-density bipolar 3---default for E1. |
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PCM |
Pulse code modulation (PCM), a digital encoding method used for analog signals. Change this setting only if required by your PRI service provider. U-LAW Default method of analog-to-digital conversion used for T1 PRI lines. A-LAW Default method of analog-to-digital conversion used for E1 PRI lines. |
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Loopback |
If enabled, you can test the telephone line of your T1 or E1 ISDN connection by setting the local network loopback. |
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Clocking |
Sets the source for the clock signal for the T1 expansion card. Line0 line0 or Line1 Line2 T1 expansion card. Internal Selects the built-in 1.544Mhz crystal to drive the line. This setting is used for dry wire configurations or back-to-back connections. External Built-in digitial service unit (DSU) channel service unit (CSU) extracts the clock signal from the line. This is the default. |
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Line Source |
See Clocking |
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External Source |
See Clocking |
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NFAS Type |
The NFAS setting for this line. Details |
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NFAS Group |
Group number. An integer between 0 and 19 that uniquely identifies a T1 interface in an NFAS group. Details |
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NFAS Interface |
Interface number. A common number assigned to all T1 lines belonging to the same NFAS group. Group is an integer between 1 and 99. Details |