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All phones reflect the usage of the BLA DA. If the call is put on "hold", any one from the group can pick up the "held" call. • As a multiple BLA group - On one single phone, multiple BLA DA can be associated with different line appearances. Every BLA DA is independent from each other and follows the same rules as "a single BLA group". • As multiple instances of a BLA DA - A "x-line-id" parameter was defined in draft-anil-sipping-bla-02.txt to present the incoming call to or place an outgoing call on the specified line appearance instance. The parameter is carried in "Alert-Info" header field over the request-URI (INVITE e.g.) or in the NOTIFY messages to report the status of a dialog. BLA DA can be configured on a global basis or on a per-line basis on the IP phones using the Aastra Web UI or the configuration files. Operational 41-001129-00 Rev 09, Release 1.4.1 5-39 IP Phone Administrator Guide Operational Features The following table shows the number of lines that can be set to BLA for each model phone. Operational Features IP Phone Model Possible # of BLA Lines 480i 9 480i CT 9 9133i 9 Configuring BLA You can configure BLA on a global or per-line basis using the configuration files or the Aastra Web UI. Global BLA You configure BLA on a global basis in the configuration files using the following parameters: sip modesip user namesip bla number You configure BLA on a global basis in the Aastra Web UI using the following fields at Advanced Settings->Global SIP->Basic SIP Settings: • Line Mode • Phone Number • BLA Number 5-40 41-001129-00 Rev 09, Release 1.4.1 Operational Features Operational Features Per-Line BLA You configure BLA on a per-line basis in the configuration files using the following parameters: sip lineN modesip lineN usernamesip lineN bla number You configure BLA on a per-line basis in the Aastra Web UI using the following fields at Advanced Settings->Line 1 thru Line 9: • Line Mode • Phone Number • BLA Number Sylantro servers and ININ servers require specific configuration methods for per-line configurations. For Sylantro Server When configuring the BLA feature on a per-ine basis for a Sylantro server, the value set for the "sip lineN bla number" parameter shall be the same value set for the "sip lineN user name" parameter for all the phones in the group. For example, if sip lineN user name is 1010, you would configure BLA on a per-line basis for the Sylantro server as follows: sip line 1 mode: 3sip line1 user name: 1010 (# for all the phones) sip line1 bla number: 1010 Operational 41-001129-00 Rev 09, Release 1.4.1 5-41 IP Phone Administrator Guide Operational Features Operational Features For ININ Server When configuring the BLA feature on an ININ server, the value set for the sip lineN bla number parameter shall be the same value set for the sip lineN user name parameter without the incremented digit added to the phone #. For example, if the sip lineN user name for the first phone is 10101, and the sip lineN user name for the second phone is 10102, etc., you would configure BLA on a per-line basis for the ININ server as follows: (# for phone 1 with appearance of phone 3) sip line1 mode: 3sip line1 user name: 10101 sip line1 bla number: 1010 (# for phone 2 with appearance of phone 3) sip line1 mode: 3sip line1 user name: 10102sip line1 bla number: 1010 (# for phone 3) sip line1 mode: 3sip line1 user name: 1010sip line1 bla number: 1010 Note: The original phone number which has the bridged line appearance on other phones, will have the "sip lineN user name" parameter the same as the "sip lineN bla number" (1010 in the above example on Phone 3). Use the following procedures to configure BLA on the IP phone. Configuring Global BLA Configuration Files For specific global parameters you can set in the configuration files, see Appendix A, the section, “SIP Basic, Global Settings” on page A-35. Configuring Per-Line BLA Configuration Files For specific per-line parameters you can set in the configuration files, see Appendix A, the section, “SIP Basic, Per-Line Settings” on page A-43. 5-42 41-001129-00 Rev 09, Release 1.4.1 Operational Features Operational Features Aastra Web UI 1 For global configuration of BLA: Click on Advanced Settings->Global SIP->Basic SIP Authentication Settings. Operational 41-001129-00 Rev 09, Release 1.4.1 5-43 IP Phone Administrator Guide Operational Features Operational Features Aastra Web UI For per-line configuration of BLA: Click on Advanced Settings->Line N (1-9). 3 2 For global configuration of BLA: In the "BLA Number" field, enter the Bridge Line Appearance (BLA) number to be shared across all IP phones. For per-line configuration of BLA: In the "BLA Number" field, enter the Bridge Line Appearance (BLA) number to be shared on a specific line. In the "Line Mode" field, select the BLA option. In the "Phone Number" field, enter the phone number of the IP phone. 4 Click to save your changes. You must restart your IP phone for the changes to take affect. 6 5 Click on...

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