E1/T1/J1 Trunk Settings
This topic describes all the settings on an E1/T1/J1 trunk for reference.
E1/T1/J1 signaling type
Yeastar P560 and P570 support the following ISDN signaling type, you can configure the trunk according to the information provided by the ISDN carrier.
PRI settings
The table below shows the Basic settings and Advanced settings for the E1/T1/J1 trunk (PRI signaling type).
Setting | Description |
---|---|
Basic Settings | |
Name |
Give this trunk a name to help you identify it. |
Interface Type |
Specify the interface type according to the trunk specification.
|
Signaling |
Specify the Signaling type PRI. |
Framing |
Select the frame format for this trunk according to the requirements of your country and carrier. The frame format of the PBX must be the same as that of the carrier. Otherwise, the link cannot be established.
|
Line Code |
Choose the line code for this trunk according to the direction provided by carrier.
|
Codec |
Choose the codec for this trunk.
|
Echo Cancellation |
This option enables or disables echo cancellation.
Note: If an
echo occurs during a call, you can enable echo
cancellation. |
D Channel |
Set the channel used to carry control information and
signaling information.
|
Switch Type |
Configure the switch type according to the direction provided
by carrier.
|
Signaling Role |
Specify whether this interface will act as the user or the
network.
|
Overlap Dial |
Define whether the system can dial this switch using overlap digits or not. If you need Direct Dial-in, then enable this option. |
Advanced Settings | |
Facility-based ISDN Supplementary Services | Decide whether to enable transmission of facility-based ISDN supplementary services (such as caller name from CPE over facility) or not. |
PRI Indication |
Select the PRI Indication.
|
Reset Interval (s) | This sets the time in seconds between restart of unused B
channels. The default is "Never". Note: Set the interval to
"Never" if you do not wish the channel to
restart. |
Carrier Hangup Tone Detection |
|
Dialplan | |
Calling Party Numbering Plan | Select the Calling Party Numbering Plan. |
Calling Party Numbering Type | Select the Calling Party Numbering Type. |
Called Party Numbering Plan | Select the Called Party Numbering Plan. |
Called Party Numbering Type | Select the Called Party Numbering Type. |
Presentation Indicator | The PI provides instructions on whether the provided calling line identity is allowed to be presented, or indicates that the number is not available. |
Screen Indicator | The SI provides information on the source and the quality of the provided information. |
ISDN Dialplan | Enable or disable the ISDN/telephony numbering plan (Recommendation E.164) |
International Prefix | Dialplan: '(Calling Party Numbering Plan:ISDN +)Calling Party Numbering Type:International' |
National Prefix | Dialplan: '(Calling Party Numbering Plan:ISDN +)Calling Party Numbering Type:National' |
Local Prefix | Dialplan: '(Calling Party Numbering Plan:ISDN +)Calling Party Numbering Type:Subscriber' |
Private Prefix | Dialplan: 'Calling Party Numbering Plan:private + Calling Party Numbering Type:Subscriber' |
Unknown Prefix | Dialplan: '(Calling Party Numbering Plan:ISDN +)Calling Party Numbering Type:Unknown' |
MFC/R2 settings
The table below shows the Basic settings and Advanced settings for the E1/T1/J1 trunk (MFC/R2 signaling type).
Setting | Description |
---|---|
Basic Settings | |
Name |
Give this trunk a name to help you identify it. |
Signaling |
Specify the Signaling type MFC/R2. |
Framing |
Select the frame format for this trunk according to the requirements of your country and carrier. The frame format of the PBX must be the same as that of the carrier. Otherwise, the link cannot be established. Framing options are:
|
Line Code | Choose the line code for this trunk according to the direction provided by carrier. Line Code options are:
|
Echo Cancellation |
This option enables or disables echo cancellation.
Note: If an
echo occurs during a call, you can enable echo
cancellation. |
Variant | Set the MFC/R2 variant.
|
Category | Set the category of the calling party.
|
MAX DNIS | Maximum amount of DNIS to ask for. Note: If you wish to
customize the size, enter the value in the text box
directly. |
MAX ANI | Maximum amount of ANI to ask for. |
Advanced Settings | |
Forced Release | Enable or disable forced release of channel. Note: If the call
can not be hung up properly, check this
option. |
Immediate Accept | Most variants of MFC/R2 offer a way to go directly to the call accepted state, by passing the use of group B and II tones. This option enables or disables the use of that feature for incoming calls. The default is unchecked. |
Double Answer | Block collect calls with double answer. This will cause that every answer signal is changed by answer -> clear back -> answer. The default is unchecked. |
Charge Calls | Whether to report to the other end "accept call with charge" or not. |
Allow Collect Calls | Specify whether to accept collect calls or not. |
MF Back Timeout (ms) | MFC/R2 value in milliseconds for the MF timeout. |
Metering Pulse Timeout (ms) | MFC/R2 value in milliseconds for the metering pulse timeout. Enter "-1" to use the value. |
Incoming DTMF Mode | Specify the incoming DTMF mode. |
Outgoing DTMF Mode | Specify the outgoing DTMF mode. |
SS7 settings
The table below shows the Basic settings and Advanced settings for the E1/T1 trunk (SS7 signaling type).
Setting | Description |
---|---|
Basic Settings | |
Name |
Give this trunk a name to help you identify it. |
Signaling |
Specify the Signaling type SS7. |
Framing |
Select the frame format for this trunk according to the requirements of your country and carrier. The frame format of the PBX must be the same as that of the carrier. Otherwise, the link cannot be established. Framing options are:
|
Line Code | Choose the line code for this trunk according to the direction provided by your carrier. Line Code options are:
|
Codec | Choose the codec for this trunk. |
Echo Cancellation |
This option enables or disables echo cancellation.
Note: If an
echo occurs during a call, you can enable echo
cancellation. |
D Channel |
Set the channel used to carry control information and signaling information. Enter a channel number from 1 to 31. |
Variant | Set the SS7 variant.
|
Linkset | Display SS7 linkset numbers. |
Network indicator | Specify the network indicator according to the network environment. |
SLC |
Specify the Signal Linking Code. |
OPC |
Specify the Originating Point Code. This is generally assigned by your carrier. |
DPC |
Specify the Destination Point Code. This is generally assigned by your carrier. |
Advanced Settings | |
Start CIC No. | Specify the Circuit Identification Code number of the first B
channel of E1 line (SS7). Note: The suggested value is the
multiples of 32 plus 1, for example: 1, 33,
65. |
Calling Party Number Type | Specify the calling party number type.
|
Called Party Number Type | Specify the
called
party number type.
|
E&M settings
The table below shows the Basic settings and Advanced settings for the E1/T1/J1 trunk (E&M signaling type).
Setting | Description |
---|---|
Name |
Give this trunk a name to help you identify it. |
Interface Type |
Specify the interface type according to the trunk specification.
|
Signaling |
Specify the Signaling type E&M. |
Framing |
Select the frame format for this trunk according to the requirements of your country and carrier. The frame format of the PBX must be the same as that of the carrier. Otherwise, the link cannot be established.
|
Line Code | Choose the line code for this trunk according to the direction provided by your carrier. Line Code options are:
|
Codec | Choose the codec for this trunk. |
Echo Cancellation |
This option enables or disables echo cancellation.
Note: If an
echo occurs during a call, you can enable echo
cancellation. |
DIDs/DDIs
Direct Inward Dialling (DID), also called Direct Dial-in (DDI), is a service offered by telephone companies. For more information of DID concepts, see DID Number Overview.
- DID numbers are usually configured on inbound routes to distinguish inbound
calls.
For more information, see Route Inbound Calls based on DID Numbers.
- For more instructions on configuring the DID numbers, see Configure DID Numbers on a Trunk.
Inbound Caller ID Reformatting
When a user calls in the PBX, the trunk provider may send a caller ID that is inconvenient for you to redial directly.
In this case, you can reformat inbound caller ID based on a trunk. The caller ID will be reformatted before it is sent to the called party.
For more information, see Reformat Inbound Caller ID based on a Trunk.
Outbound Caller ID
Outbound caller ID is the phone number or name that is displayed on the called party's device.
You can set up a global outbound caller ID for a trunk or assign caller IDs for extension users.
If you set the caller ID number, when users make outbound calls through this trunk, the called party will see this caller ID number instead of the calling party's number.
For more information of outbound caller ID configurations, see Customize Outbound Caller IDs for Outbound Calls