Primary Line
Defining a Primary Line means that when you dial a new number using the phone connected to your
device, or the AA, you do not need to first dial a service route access code.
You can add as many as four SP VoIP services to your device. The VoIP services are SIP-based
services. In addition, all device models come with the PDMS-SP (peer-to-peer) service. In this
document, any one of these voice services is referred to as a
trunk
. A trunk group (TG) is a comma-
separated ordered list of trunks. If a TG is selected for making an outbound call, the device picks
the first available member in that trunk group for the call. As many as four TGs can be defined for a
device. See the {Xref Error! Target does not exist.}Trunk Groups section for details.
You can designate one of the available trunks, or TGs, as the Primary Line for outbound calls. This
trunk is then used when users make calls without dialing any service route access codes. See Place a
Call On the Primary Line on page 39 for more information.
To make a call via a service that is not the Primary Line, you need to dial that service's access code
before the destination number.
The default service route access codes are defined as:
● **1 : SIP Service Provider 1 (SP1)
● **2 : SIP Service Provider 2 (SP2)
● **3 : SIP Service Provider 3 (SP3)
● **4 : SIP Service Provider 4 (SP4)
● **9 : PDMS-SP Network (PP)
Configure the Primary Line
Use the system web interface to configure a line as the Primary Line for outbound calls made from the
Phone port and via the device Auto Attendant. The primary line is the default service used to make
calls when users aren't using an explicit access code prefix.
When you set the name of the primary line, occurrences of (Mpli) and pli are substituted
internally with the abbreviated trunk name of the selected primary line, in the device DigitMap and
OutboundCallRoute parameters as follows:
Table 6-1
Primary Line Parameter Mapping
Primary Line Parameter Value
SP1 sp1
SP2 sp2
SP3 sp3
SP4 sp4
PDMS-SP pp
Trunk Group 1 tg1
Trunk Group 2 tg2
1. In the system web interface, go to Physical Interfaces > PHONE n Port.
Primary Line
37
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