The Ziron Inbound SIP service allows you to receive voice traffic to your SIP platform or switch. It is generally not suitable for directly providing service to end users.
Calls will be delivered to the SIP URI set in the relevant endpoint associated with the number being called. You may use %did - which is a placeholder for the called number in E164 format - anywhere in your endpoint URI, for example, a call destined for +442079460123 using the following URI:
will be expanded to:
This also allows the use of tech prefixes, e.g. to prefix all invites with 12345, you could use the following URI:
We will follow port and protocol designations, for instance:
We will also follow any preferences found in SRV records on a 'best efforts' basis.
CLI is provided in E164 format on a 'best efforts' translation basis. You can change this to one of the following via the Ziron dashboard or API:
|raw||as received from the originating network|
|national||national format for the called number country|
Please note that where CLI cannot be validated, the 'raw' data will be passed through.
CLI data is given in the P-Asserted-Identity header, and we support unknown/withheld CLI via the Privacy header.
DTMF is only supported out-of-band as per RFC2833.
Calls may contain the following additional headers:
|X-ziron-country-iso||Country ISO code of the called number, e.g. GB|
|X-ziron-number-type||Type of the called number, e.g. local, national, mobile|
|X-ziron-number-sid||Unique identifier representing the called number|
|X-ziron-endpoint-sid||Unique identifier representing the endpoint|
|X-ziron-trunk-sid||Unique identifier representing the trunk|
We currently support the following codecs:
- G711a /A-law
- G711u /μ-law
Firewall / IP information
You should allow traffic to and from the following IP addresses and network ranges in both directions:
SIP signalling (udp port 5060, tcp port 5060, tcp port 5061):
- 220.127.116.11 - London
- 18.104.22.168 - London
- 22.214.171.124 - London (legacy)
- 126.96.36.199 - London (legacy)
RTP Media (udp ports 1024-65534):