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VoIP Phones - Grandstream HT8xx: Difference between revisions
VoIP Phones - Grandstream HT8xx (view source)
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You can set up distinctive ring tones based on the calling number, and it even allows matching on part of a number. I use '020836xxxxx' to match calls from a number of exchanges on the northern edge of London (which is where your author lives). You can't match a E.164 number (+442036xxxxx) directly but under ''FXS Port'' is an option ''Replace Beginning '+' with 00 in Caller ID'' which changes +4420... into 004420... which can be matched.
== NAT notes ==
Some customers have had problems with one-way audio or only being able to make outbound calls and inbound fail. This would be related to NAT breaking things. Some settings in the SIP settings area may help, eg:
* NAT Traversal: Keep-Alive (or try stun, with stun.aa.net.uk)
* Register Expiration = 10
* Register expiration = 5
== Other useful settings to set ==
* Unregister on Reboot = Yes
==IPv6 Only==
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