SIP User's Manual 110 Document #: LTRT-68806
Mediant 2000 & TP-1610 & TP-260/UNI
3. Click the Submit button to save your changes, or click the Subscribe to MWI or
Unsubscribe to MWI buttons to save your changes and to subscribe / unsubscribe to
the MWI server.
4. To save the changes to flash memory, refer to 'Saving Configuration' on page 256.
Table 5-13: Supplementary Services Parameters
Parameter Description
Enable Hold
[EnableHold]
Enables interworking of the Hold/Retrieve supplementary service from PRI
to SIP.
 [0] Disable = Disables.
 [1] Enable = Enables (default).
Notes:
 This capability is only supported for QSIG and Euro ISDN variants.
 To support interworking of the Hold/Retrieve supplementary service
from SIP to ISDN, set EnableHold2ISDN = 1.
Enable Transfer
[EnableTransfer]
 [0] Disable = Disable the call transfer service.
 [1] Enable = The gateway responds to a REFER message
with‘Referred-To’ header to initiates a call transfer (default).
Notes:
 To use this service, the gateways at both ends must support this option.
 To use this service, set the parameter EnableHold to 1.
Transfer Prefix
[xferPrefix]
Defined string that is added, as a prefix, to the transferred / forwarded
called number, when REFER / 3xx message is received.
Notes:
 The number manipulation rules apply to the user part of the 'REFER-
TO / Contact' URI before it is sent in the INVITE message.
 The xferPrefix parameter can be used to apply different manipulation
rules to differentiate transferred number from the original dialed
number.
Enable Call Forward
[EnableForward]
 [0] Disable = Disable the Call Forward service.
 [1] Enable = Enable Call Forward service(default).
The gateway doesn't initiate call forward, it can only respond to call
forward requests.
Enable Call Waiting
[EnableCallWaiting]
 [0] Disable = Disable the Call Waiting service.
 [1] Enable = Enable the Call Waiting service (default).
If enabled, when the gateway initiates a Tel to IP call to a destination that
is busy, it plays a Call Waiting Ringback tone to the originator of the call.
Notes:
 The gateway's Call Progress Tones file must include a Call Waiting
Ringback tone.
 The EnableHold parameter must be enabled on the called side.
 ini For information on the Call Waiting feature, refer to Call Waiting.
 For information on the Call Progress Tones file, refer to the SIP Series
Reference Manual.
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