AltiGen MAXCS 7.0 Update 1 ACM Administration - Manual (Page 157)

Setting General Trunk Attributes
MaxCS 7.5 Administration Manual 141
• Overlap – Transmitting dialed DTMF digits to the CO without buffering digits in the system first. Use
Overlap dialing for analog and T1-CAS trunks for best results. Calls will be completed faster.
• En-bloc – The system will buffer all dialed digits and send it to the CO at once. Typically is used in
ISDN-PRI trunk and SIP trunk.
Note: For IP tie trunks, use the IP Dialing Table in Enterprise Manager to set the dialing
scheme (Enterprise Manager is available by selecting VoIP > Enterprise Network
Management
, or from the Windows Start menu).
• Trunk Call Predial String – To have the system automatically insert the configured digits whenever the
selected trunk is used for outgoing calls. This feature is used to prevent having to dial “9” twice for trunk
access when the system is used behind another PBX system or this trunk is a Centrex line, which requires
dialing “9” to make a call. If you select this option, type the predial digit(s) into the text box.
• Enable Centrex Transfer – When checked, the system is able to transfer an incoming call to another out-
side number through the same trunk and release the incoming trunk. Before you configure this option for
the trunk, please make sure your trunk is a Centrex line or supports the Release Line Transfer (RLT) fea-
ture. Depending on the type of trunk, your configuration may be different:
• If this is an analog Centrex line, you only need to check the Enable Centrex Transfer check box. A
FLASH signal will be transmitted to the CO if the incoming trunk call needs to be transferred to an out-
side number.
• If this is a T1-CAS trunk, you may need to add “transfer predial string.” From the CO point of view, it is
their feature code to initiate RLT. Please check with your carrier to get the specification.
• If this is a PRI trunk, you need to ask your carrier if they support RLT through DTMF. Some carriers
accept *8 to signal RLT. AltiGen PRI trunks currently do not support 2-B channel transfer feature.
How to signal MAXCS that it is a Centrex transfer:
• If a call is connected to an extension, the extension user needs to dial
FLASH * plus trunk access code and the outside number.
• If a virtual extension forwarding or speed dialing number is configured to an outside number and the
extension user transfers a call to the virtual extension or speed dialing number, the system will add the
Centrex FLASH automatically. You don’t need to add the “*” in the forwarding or speed dialing digit
stream.
• Attribute – In Service makes the trunk available for use. Out of Service prevents the trunk from being
used (for example, while performing maintenance).
• Enable Tie Trunk – This configuration field is meaningful only if you use T1 or PRI to connect two MAXCS
systems back-to-back. Do not check this box if you connect a MAXCS to a third-party PBX via T1 or PRI
trunk.
When this configuration is checked, the system software will interpret the incoming [ANI] [DNIS] digit
sequence as [Caller’s Extension Number] and [Target Extension Number]. An incoming tie trunk call will
be routed to the target extension and all the Incall Routing rules will be bypassed. If you do not check this
box for system-to-system tie trunk, the system will check the Ext. DID/DNIS Routing/Caller ID Routing
table first. If there is no match, the trunk incall routing rule will apply.
Note: The Enable Tie Trunk field under Board Configuration > Protocol needs to be
enabled for T1/PRI tie trunks as well. It will tell the system to transmit [Caller’s Extension
Number] and [Target’s Extension Number] as [ANI] [DNIS] to the other system. In case
this is a T1-CAS, which typically cannot transmit any data to the CO, the system will use
DTMF as a way to transmit [Caller’s Extension Number] and [Target’s Extension
Number] to the other side of the tie trunk. Because the format is AltiGen proprietary, you
may have a problem if you enable this configuration when connecting to a non-AltiGen
PBX.
• Holiday Profile – A holiday profile can be assigned to a trunk. The list selection is based on settings
configured in the Holiday tab of System Configuration (see “Routing Calls on Holidays” on page 53).