Line Number

Default = Auto-filled. Range = 1 to 249 (IP500 V2)/349 (Server Edition).

Enter the line number that you wish. Note that this must be unique. On IP500 V2 systems, line numbers 1 to 16 are reserved for internal hardware.

• Session Manager line prioritization: Up to two Session Manager lines can be configured. The two Session Manager lines are prioritized based on the line number. The lower line number is considered the primary Session Manager line. For example, if the first Session Manager line is configured as line number 17 and the second Session Manager line is configured as line 18, then line number 17 is considered the primary Session Manager line. If you want to designate the second Session Manager line (line 18 in this example) as the primary Session Manager line, you must change one or both of the line numbers so that the second Session Manager line is configured with a lower number than the current primary line.

• Session Manager line redundancy: Based on the priority of the Session Manager lines designated by the line number, the active line to which the IP Office> sends all calls will always be the highest priority Session Manager line in service. That is, if the primary Session Manager line is in service, it will be the active line for sending calls. If the connection to the primary Session Manager line is lost, causing the IP Office to switch to the secondary Session Manager line, then when the primary line comes back up later, the IP Office reverts back to the primary Session Manager line.

In Service

Default = Enabled

This option can be used to administratively disable the SM Line. It does not reflect the dynamic state of the line. If an SM Line is administratively disabled it is not equivalent to being in the dynamic out of service state.

SM Domain Name

This should match a SIP domain defined in the Session Manager system's SIP Domains table. Unless there are reasons to do otherwise, all the Enterprise Branch systems in the Avaya Aura® network can share the same domain.

SM Address

Enter the IP address of the Session Manager the line should use in the Avaya Aura network. The same Session Manager should be used for the matching Entity Link record in the Avaya Aura® configuration.

Outgoing Group ID

Default = 98888

This value is not changeable. However note the value as it is used in Enterprise Branch short codes used to route calls to the Session Manager.

Prefix

Default = Blank

This prefix will be added to any source number received with incoming calls.

Max Calls

Default = 10

Sets the number of simultaneous calls allowed between the Enterprise Branch and Session Manager using this connection. Each call will use one of the available licenses that are shared by all SIP trunks configured in the system.

Network Type

Default = Public.

This option is available when System | Telephony | Telephony | Restrict Network Interconnect  is enabled. It allows you to configure trunks as either Public or Private.

• The IP Office will return number busy indication to any attempt to connect a call on a Private trunk to a Public trunk or the opposite.

• The call restriction includes transfers, forwarding and conference calls.

• Avaya does not recommended use of this feature on IP Office systems using any of the following features:  multi-site networks, VPNremote, application telecommuter mode.

Include location specific information

Default = Off.

Enabled when Network Type is set to Private. Set to On if the PBX on the other end of the trunk is toll compliant.

URI Type

Default = SIP.

When SIP or SIPS is selected in the drop-down box, the SIP URI format is used (for example, name@example.com). This affects the From field of outgoing calls. The To field for outgoing calls will always use the format specified by the short codes used for outgoing call routing. Recommendation: When SIP Secured URI is required, the URI Type should be set to SIPS. SIPS can be used only when Layer 4 Protocol is set to TLS.

Media Connection Preservation

Default = Enabled.

When enabled, attempts to maintain established calls despite brief network failures. Call handling features are no longer available when a call is in a preserved state. When enabled, Media Connection Preservation applies to Avaya H.323 phones that support connection preservation.

Location

Network Configuration

TLS connections support the following ciphers:

• TLS_RSA_WITH_AES_128_CBC_SHA

• TLS_RSA_WITH_AES_256_CBC_SHA

• TLS_DHE_RSA_WITH_AES_128_CBC_SHA

• TLS_DHE_RSA_WITH_AES_256_CBC_SHA

Layer 4 Protocol

Default = TCP.

Send Port

When Network Configuration is set to TLS, the default setting is 5061. When Network Configuration is set to TCP, the default setting is 5060.

Listen Port

When Network Configuration is set to TLS, the default setting is 5061. When Network Configuration is set to TCP, the default setting is 5060.

Session Timer

Default = 1200. Range = 90 to 64800

This field specifies the session expiry time.  At the half way point of the expiry time, a session refresh message is sent. Setting the field to On Demand disables the session timer.

Communication Manager supports SIP session refresh via UPDATE in Communicaton Manger release 6.2 SP1 and later. If using an earlier release of Communication Manager, then the Session Timer parameter must be set to On Demand.

Description

Default = Blank. Maximum 31 characters.

You can use this field to enter a description for the configuration entry. The description is not used elsewhere.