Routing your tracking numbers to a SIP Client enables your advanced voice applications to initiate SIP sessions from CallTrackingMetrics towards your existing SIP communications infrastructure, such as IP-PBX, SBC, and IP-phones.
Create a Receiving SIP Client in CTM
In your CallTrackingMetrics account, you must create a SIP Client receiving number.
4) Enter your SIP Client in the field provided (example: firstname.lastname@example.org).
If your SIP Client requires authentication, set a user and password in the SIP User and SIP Password fields provided.
5) Click Save & Continue.
Media codec: CallTrackingMetrics uses G.711/μ-law CODEC for media. This is the most popular CODEC used by the carriers so transcoding is unnecessary.
DTMF: CallTrackingMetrics implements RFC-2833 for sending and receiving DTMF.
Securing SIP Traffic using TLS Encryption ensures that the call media and associated signaling remains private during transmission. Transport Layer Security (TLS) provides encryption for SIP signaling. When receiving SIP from CallTrackingMetrics, only a single crypto suite will be advertised: AES_CM_128_HMAC_SHA1_80
IP Address Whitelist
Prepare your communications infrastructure to make sure that your SIP infrastructure has connectivity toCallTrackingMetrics and vice versa. To ensure that your communications infrastructure doesn’t block communication, you must update your whitelist. We strongly encourage you to whitelist all of the following IP address ranges and ports on your firewall for SIP signaling and RTP media traffic.
This is important if you have numbers in different regions as well as for availability purposes (for example, if North America Virginia gateways are down, then North America Oregon gateways will be used).