Admin Guide - VoIP software provider

If you need more flexibility, you can edit the v_check_pxrules stored procedure manually using any SQL expression.For CLI control you can set the “cli” field for any user:CLI: CLIR and CLIP settings0: forward always (forward asserted as normal number always!). Will not hide, even if caller was set so.1: normal handling (forward asserted as normal number) -default2: forward as asserted identity always (identityrewrite asserted)3: forward as asserted identity only to trusted domains (identityrewrite asserted)4: normal hide (no idenityrewrite forwarding)5: force hide (no asserted identity too!). Always hidden.To completely rewrite the A number you can use the “rewriteanumber” field.To cut some prefixes from the A number use the “cutanumber” field.To allow some A numbers and rewrite other numbers you can use the identityrewrite and identityforward fields.This can be useful when not all your user have real PSTN numbers.Addtechprefix: we insert this number before the callednumber if the caller doesn‟t send its calls with tech prefix.identityforward: we can toward these kinds of usernames and the other we rewrite to „identityrewrite”.identityrewrite: if the caller username don‟t match the identityforward prefix, then we rewrite it.For more control over the A number you can use the prefix rules form or manually edit the v_check_pxrules stored procedure.Prefixed can be also used for authentication, routing and billing.5.89. Possible NATs and firewallsThere are several ways UDP might be handled by a specific NAT or firewall implementations, these are categorized into:Full Cone NATA full cone NAT is a solution, where all requests from the same internal IP address and port are mapped to the same external IP address and port.Furthermore, any external host can send a packet to the internal host, by sending a packet to the mapped external address.