User's Manual 1260 Document #: LTRT-10632
Mediant 800B Gateway & E-SBC
Parameter Description
(unless the SIP183Behaviour parameter is set to 1).
ISDN: The device operates according to the
LocalISDNRBSource parameter:
1) If the device receives a 180 Ringing response (with
or without SDP) and the LocalISDNRBSource parameter
is set to 1, it plays a ringback tone and sends an ISDN
Alert with PI = 8 (unless the ProgressIndicator2ISDN_x
parameter is configured differently).
2) If the LocalISDNRBSource parameter is set to 0, the
device doesn't play a ringback tone and an Alert
message without PI is sent to the ISDN. In this case, the
PBX / PSTN plays the ringback tone to the originating
terminal. Note that the receipt of a 183 response does
not cause the device configured for ISDN to play a
ringback tone; the device issues a Progress message
(unless SIP183Behaviour is set to 1). If the
SIP183Behaviour parameter is set to 1, the 183
response is handled the same way as a 180 Ringing
response.
[2] Prefer IP = (Default):
Analog Interfaces: Plays a ringback tone to the Tel side
only if a 180/183 response without SDP is received. If
180/183 with SDP message is received, the device cuts
through the voice channel and doesn't play the ringback
tone.
Digital Interfaces: Plays according to 'Early Media'. If a
SIP 180 response is received and the voice channel is
already open (due to a previous 183 early media
r
esponse or due to an SDP in the current 180 response),
the device doesn't play the ringback tone; PI = 8 is sent
in an ISDN Alert message (unless the
ProgressIndicator2ISDN_x parameter is configured
differently).
CAS: If a 180 response is received, but the 'early media'
voice channel is not opened, the device plays a ringback
tone to the PSTN.
ISDN: The device operates according to the
LocalISDNRBSource parameter:
1) If LocalISDNRBSource is set to 1, the device plays a
ringback tone and sends an ISDN Alert
ISDN (unless the ProgressIndicator2ISDN_x parameter
is configured differently).
2) If LocalISDNRBSource is set to 0, the device doesn't
play a ringback tone. No PI is sent in the ISDN Alert
message (unless the ProgressIndicator2ISDN_x
parameter is configured differently). In this case, the
PBX / PSTN plays a ringback tone to the originating
terminal. Note that the receipt of a 183 response results
in an ISDN Progress message (unless SIP183Behaviour
is set to 1). If SIP183Behaviour is set to 1 (183 is
handled the same way as a 180 + SDP), the device
sends an Alert message with PI = 8, without playing a
ringback tone.
[3] Play Local Until Remote Media Arrive = Plays a ringback
tone according to received media. The behaviour is similar to
[2]. If a SIP 180 response is received and the voice channel
To Next Page
Loading...
