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Chapter 3. Terminal Menu Operation and Structure
3-12 Express 4110/4120 User Manual 61200176L3-1
multipoint. If the line has only one SPID, then it must be entered in
SPID 1.
National ISDN1 switches require the addition of a two-digit terminal identifier (TID) at the end
of the SPID.
Dial Line/LDN 1 or 2
Write security: 2; Read security: 5
This option allows the entry of 0, 1, or 2 LDNs. The LDN is used
when placing or receiving calls. The LDN is the local phone number
assigned to the line.
Disconnect the network interface from the unit before initially entering or altering the SPIDs
and LDNs.
ISDN/Leased Line
Write security: 2; Read security: 5
Leased Line parameters are entered under this menu. Leased mode
would be used for permanent circuits.
Leased Line/Clock Mode
Write security: 2; Read security: 5
The clock mode determines which unit will supply the clock for
synchronization. If the two units are connected through channel
banks, both units should be configured for Slave mode. The 4110/
4120 only supports the slave mode.
Leased Line/Channel Rate
Write security: 2; Read security: 5
SPID 1 = 0155512120
SPID 2 = 0155512130
LDN 1 = 5 5 5 1 2 1 2
LDN 2 = 5 5 5 1 2 1 3
Slave (def)
Timing is derived from the master unit.
64k
Only B1 is used.
2x64k
B1 and B2 go to different locations.
128k
(def) B1 and B2 are used together.