Display Name

Set the display name. This name is shown on Caller ID.

 

 

Enable Registration

Check to submit registration information.

 

 

Domain Realm

SIP Domain if different than the SIP Registrar Server.

 

 

Proxy Server Address

SIP proxy server IP address or URIThis is normally the same as

 

the SIP Registrar Server)

 

 

Proxy Server Port

SIP Proxy server port. Normally 5060.

 

 

Proxy User

SIP Proxy server account.

 

 

Proxy Password

SIP Proxy server password.

 

 

Backup Server Address

Backup SIP Server Address or URI (This server will be used if the

 

primary server is unavailable)

 

 

Backup Server Port

Backup SIP Server Port

 

 

Server Name

Name of SIP Backup server

 

 

 

Codecs Settings

Click on the desired codec to select it. Then use the Left/Right arrow keys to move to the Enabled or Disabled List. Use the Up/Down arrow to change the priority of enabled codecs.

 

Advanced SIP Settings

 

 

Forward Type

There are 3 call forwarding modes plus Disabled.

 

DisabledNo call forwarding – Default mode

 

BusyIf the phone is busy, incoming calls will be forwarded.

 

No answerIf there is no answer, incoming calls will be forwarded

 

after a specified time.

 

AlwaysAll incoming calls will be forwarded.

 

 

Forward Number

Number to which calls are to be forwarded.

 

 

No Ans. Fwd Wait Time

Used in conjunction with Call Forward No Answer. Wait time in

 

seconds before call is forwarded.

 

 

Transfer Timeout

Time interval between sending “bye” message and hanging up

 

after the phone transfers a call.

 

 

Enable Hotline

Activate Hot Line feature. Automatically call a number by going

 

off hook.

 

 

Hotline Number

Number to be called in Hot Line Mode.

 

 

Warm Line Wait Time

Used in Hot Line Mode. Time the phone waits after off hook

 

before dialing the hot line number.

 

 

SIP Encryption

Enable/Disable SIP Encryption.

 

 

SIP Encryption Key

SIP Encryption key.

 

 

RTP Encryption

Enable/Disable RTP Encryption.

 

 

RTP Encryption Key

RTP encryption key

 

 

Enable Auto Answer

Activate Auto Answer mode. If activated, phone will

 

automatically answer an incoming call.

 

 

Auto Answer Timeout

Used in conjunction with Auto Answer. The phone will answer

 

an incoming call after the Auto Answer Timeout

 

 

Enable Session Timer

If enabled, this will refresh the SIP session timer per RFC4028.

 

 

Session Timeout

Refresh interval if Session Timer is enabled.

 

 

 

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Cortelco C56 user manual Codecs Settings, Advanced SIP Settings