Voice Network Details
DC Tech operates as a Active/Active Geo Redundant Infrastructure to best meet the needs of our partners and your customers.
Below are the addresses and related IPs for different segments of the network.
We recommend that you always use auto provisioning, and if manually configuring a device, use its SRV feature, to benefit from the best available redundancy methods.
We also suggest that you avoid using a specific DNS A Record or direct IP if manually configuring a device.
SIP Servers
IMPORTANT: If using this list to white list IPs on your local router or firewall, please ensure you whitelist all IP's or you may experience a service interruption during a maintenance or failover event.
| Address | DNS A record resolution IP | SRV record resolution IP | |
|
SBC Global |
|||
|
SIP Trunking T38 IP-Fax Legacy Hosted PBX |
sbc.simplelogin.net |
192.92.8.30 Primary 64.52.82.30 Secondary |
192.92.8.30 64.52.82.30 |
| PBX East | |||
|
Hosted PBX Hosted Call Center |
pbx1.mia.simplelogin.net pbx2-mia.simplelogin.net |
192.92.8.71 | All PBX IPs in varying order based on network needs |
| PBX Central | |||
|
Hosted PBX Hosted Call Center |
pbx2.dfw.simplelogin.net | 64.52.82.25 | All PBX IPs in varying order based on network needs |
| PBX West | |||
|
Hosted PBX Hosted Call Center |
pb1.sjc.simplelogin.net | 64.52.83.20 | All PBX IPs in varying order based on network needs |
Codecs
DC Tech operates transparent proxies and does not perform transcoding. This ensure your media does not suffer any quality degradation from the transcoding process. Offered codecs will be negotiated by the SIP Server and a matching preferred codec will be used.
Supported Audio Codecs:
G.711U (PCMU)*
G.711A (PCMA)
G.722
G.729*
*Note: These codecs should always be enabled to guarantee call completion.
Supported Video Codes:
H.263
H.264
DTMF
RFC2833 should always be the preferred DTMF method.
IP Fax
DC Tech supports IP Faxing via T.38 and G.711 fallback.
T.38 faxing is supported on most DIDs and Termination carriers and initiated via a T.38 re-INVITE.