Cisco Systems IPMUX-1 External, Default Disable, 10 dB, -32 dB, Default -10 dB, Unframed, To FF

Appendix E Configuration MenusIPmux-1/1EInstallation and Operation Manual

Table E-12. E1 Physical Layer Configuration Parameters (Cont.)

Parameter	Possible Values	Remarks
Loopback State	Internal	Data received from the IP network side will be looped back to
		the network transmit line. An unframed all ‘1’ code (AIS) will
		be transmitted in the E1 Tx path toward the PBX. Incoming
		data from the PBX will be ignored.
	External	Data received from the PBX at the receive E1 line will be
		looped back to the E1 Tx path (toward the same PBX), and will
		continue its way to the IP network. Data coming from the IP
		network will be ignored.
	Disable	No loopback; regular operation
		Default: Disable
Rx Sensitivity	-10 dB, -32 dB	Maximum attenuation of the receive signal that can be
		compensated for by the interface receive path
		Default: -10 dB
Line Type		Framing mode and operation mode for each configuration
	Unframed	Framer will be configured to pass through mode and the
		operation mode will be set to Transparent (see Chapter 1)
	CRC4 Enable	Framer will be configured to CRC4 MF mode. Operation
		mode will be set by Signaling Mode field #6 to either
		Fractional or Fractional with CAS (see Chapter 1).
	CRC4 Disable	CRC4 MF mode is disabled. Operation mode will be set by
		Signaling Mode field #6 to either Fractional or Fractional with
		CAS (see Chapter 1).
		Note: Changing the Line Type setting disables the Line.
		Default: CRC4 enabled
Idle Code	00 to FF	Determines the idle code inserted into unused timeslots by
		IPmux-1 at the transmit path towards E1 equipment.
		Note: This field will not appear if “unframed” is selected in the
		Line Type field.
		Default: 7E

E-18 IPmux-1 E1/T1 Configuration