Ericsson iPECS-100 Feature Description And Operation Manual page 459

iPECS-LIK
Feature Description & Operation Manual
5. RTP Connection
– VMEX is registered as a 'remote' mode phone by default.
And there need one VOIP relay channel between VMEX and internal local
mode station, CO, VSF/VMIM or misc device.
If you want to force VMEX to local mode, you can make that by set PGM 211 -
Device NAT Usage = 'NOT NAT'.
If then you need to establish all of routable IP configuration.
–
VMEX RTP is non-recursing by default.
6. DTMF
–
Outband signaling by default
– you can set this to INBAND or 2833 in PGM 211 - 'DTMF TYPE'
–
If DTMF type is set to INBAND or 2833 then VOIP RTP relay channel is utilized
automatically when voice connection is established.
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Issue 6.1