Aastra Telecom 57I CT, 55I, 53I manual Line Settings, IP Phone Available Model

IP Phone Administrator Guide Administrator Level Options

Administrator Options

Line Settings

An administrator can configure multiple lines on the IP phone with the same SIP network configuration (global) or a different SIP network configuration (per-line). The following table provides the number of lines available for each IP phone model.

IP Phone	Available
Model	Lines
53i	9
55i	9
57i	9
57i CT	9

On the IP Phones, you can configure the following on a per-line basis using the configuration files or the Aastra Web UI:

•Basic SIP Authentication Settings

•Basic SIP Network Settings

•Advanced SIP Settings (Missed Call Summary Subscription only)

•RTP Settings (DTMF Method and RTP Encryption only)

•Autodial Settings (You can enable/disable “Use Global Settings” on a per-line basis only)

References

For more information about configuring the features listed above on a per-line basis, see Chapter 4, the sections:

•“Basic SIP Settings” on page 4-46

•“Advanced SIP Settings (optional)” on page 4-58

•“Real-time Transport Protocol (RTP) Settings” on page 4-64

•“Autodial Settings” on page 4-74

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