Signaling System 7 (SS7)

Configuring an SS7 signaling gateway

[in T1/{ shelf-1 slot-1 7 }:line-interface:channel-config:24]

channel-usage = switched-channel

Parameter

Signaling-Mode

Incoming-Call-Handling

Channel-Usage

Usage for SS7 data trunks

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-trunkcauses 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-bitcauses 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.

Specifies how the TAOS unit processes incoming calls on this line. For SS7 data trunks, the parameter must be set to internal-processingin this release. The ss7-gateway-processingsetting for passing incoming call requests to an external signaling gateway is currently not supported.

T1 lines typically use channel 24 for signaling. For SS7 data trunks, the Channel-Usage setting for channel 24 must be 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

APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide

18-9

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Lucent Technologies 7820-0802-003 Example of configuring a T3 card for SS7 data, Example of configuring a T1 data trunk