Wheelchair User Manual

Signaling System 7 (SS7)
Configuring an SS7 signaling gateway
APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide Preliminary May 9, 2000 18-9
[in T1/{ shelf-1 slot-1 7 }:line-interface:channel-config:24]
channel-usage = switched-channel
Example of configuring a T3 card for SS7 data
To configure lines of a T3 card as SS7 data trunks, you must first configure the T3 profile as in
the following example:
admin> read t3 {1 1 1}
T3/{ shelf-1 slot-1 1 } read
admin>
set enabled = yes
admin> set frame-type = m13
admin> set line-length = 0-225
admin> write
T3/{ shelf-1 slot-1 1 } written
After configuring the T3 line, configure the individual T1 lines that constitute the T3 line as
explained in the next section.
Example of configuring a T1 data trunk
The following commands configure a T1 line as an SS7 data trunk, enabling the signaling
gateway to control the line:
admin> read t1 {1 1 7}
T1/{ shelf-1 slot-1 7 } read
Parameter Usage for SS7 data trunks
Signaling-Mode For an SS7 data trunk, which carries no signaling, this parameter
can be set to either of the following values. The setting registers
the line with the signaling gateway and allows the gateway to take
control of the line and its calls.
ss7-data-trunk causes the unit to provide clear 64Kbps SS7
data trunk support. If any of the PSTN switches you are using is a
1AESS switch, which uses robbed-bit signaling, this setting can
sometimes cause that switch to receive fluctuating A/B bit status.
This condition might ultimately force the line out of service,
unless you disable robbed-bit signaling on the 1AESS switch.
ss7-robbed-bit causes the TAOS unit to send a steady A/B
bit status on the SS7 data trunk, which eliminates the need to
disable robbed-bit signaling on the 1AESS switch.
Incoming-Call-Handling
Specifies how the TAOS unit processes incoming calls on this line.
For SS7 data trunks, the parameter must be set to
internal-processing in this release. The
ss7-gateway-processing setting for passing incoming call
requests to an external signaling gateway is currently not
supported.
Channel-Usage
T1 lines typically use channel 24 for signaling. For SS7 data
trunks, the Channel-Usage setting for channel 24 must be
switched-channel.