Aastra Telecom AastraLink Pro 160 - Manual (Page 194)

Configuring VoIP Settings
4-84 41-001190-02 Rev. 01, Rel. 1.2
AastraLink Pro 160 Administrator Guide
Single and Multiple SIP Trunks
The AastraLink Pro supports the dialing of a prefix + index when multiple or
single SIP trunks are setup. The user must dial 8+index+number to dial out.
The AastraLink Pro also supports single-digit prefixes on a single SIP trunk. A
user can dial 8+number when a single SIP trunk is configured, and
8+index+number when multiple SIP trunks are configured.
You can select whether to configure single or multiple SIP trunks by choosing
"Single" or "Multiple" for the SIP Trunk Mode parameter at the location,
Configuration->Dial Plan->Settings. For more information about setting the SIP
Trunk Mode parameter, see
“Specifying Dial Plan Settings” on page 4-41 .
SIP Trunk Mode