Call-center traffic on a softswitch: what operators need
Office PBX traffic and call-center traffic both travel over SIP. That is where the similarity ends. A predictive dialer can fire more attempts in one second than a small office places in a morning....
View ArticleWhen your voice business needs more than 1,000 CPS
A wholesale carrier adds a fast-growing originator. A provider that serves outbound call centres takes on more dialling traffic. Several campaigns hit their busiest window at the same time. These...
View ArticleHow we lost our largest client
We lost our largest client. This is what happened, what we got wrong, and what we are changing. They were a fast-growing wholesale operator on M4. At peak they ran about 30 million calls per day. One...
View ArticleWhy carriers regret writing their own billing
You already have Asterisk. You have a few scripts that rate CDRs overnight. Prepaid works for the customers you have today. A commercial softswitch looks expensive next to “we already built it.” That...
View ArticleWhich dialer customer burned your CPS route
You carry call-centre and dialer traffic for several customers on the same US or UK termination. One campaign opens at 09:00. Setup attempts spike. The upstream trunk answers with SIP 503 and...
View ArticleWhite-label hosted PBX: one invoice for many resellers
You sell hosted PBX or UCaaS through partners. Each partner wants their logo, their rates, and their own customers. If every customer sits on a separate PBX box, month-end billing turns into CDR...
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Introducing the new client Support portal
Same tickets, servers, payments, and product votes. A clearer home screen, light and dark themes, and less hunting through menus. Kolmisoft clients already work in the Support System at...
View ArticleYour partner’s invoice and your CDRs disagree
The supplier PDF is 570 EUR above Last Calls for the same month. Finance wants to pay or to withhold. Pair their call file with yours before either. Averon Networks (4 May 2026) writes that wholesale...
View ArticleHow VoIP providers get drained in 30 minutes
You open Last Calls on a Monday and a prepaid balance is gone. Or a postpaid account with unlimited credit spent half an hour on satellite, cruise-ship, and premium-rate prefixes. The upstream carrier...
View ArticleIntroducing CDR export files on the server
A template export can stay on the server. You download it from CDR export files, and the email carries a link. The archive is attached only when you ask for that and the file is under 10 MB. If you run...
View ArticleWhy a dialer gets 503s when channels are still free
You start a predictive campaign. The trunk still shows free channels. A second later the dialer log fills with SIP 503 and congestion, and the leads burn. The channel counter never got close to its...
View ArticleOrigin-based rating: two prices, one prefix
Suppliers list prefix 356 twice on a Malta deck. You pay one price when the caller is inside the European Economic Area. You pay the other when the caller is outside it. Load a single rate for 356 and...
View ArticleYour minutes and theirs will not match
The partner invoice is higher than your CDRs for the same window. You export Last Calls. They send a CSV. One answered call shows whether the gap is a billing increment, a one-second round-up, a grace...
View ArticleCalls per second vs concurrent calls
You buy a trunk by concurrent calls. The contract says 100 channels. The dialer still fails in the first second of a campaign, and the channel counter is near zero. The number you did not buy is calls...
View Article2026 September Development Update
MOR adds a one-call anonymous dial prefix, voicemail greeting upload, and CDR exports you can download from the server. The API can edit a whitelist reason, set daily balance warnings, set device PAI,...
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Your Firewall Passed. Your Balance Didn’t.
You open Fail2Ban in the morning and the jail is quiet. Registrations succeeded. Last Calls shows a customer you know, on destinations you do not sell, for hours you were asleep. The prepaid wallet is...
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Introducing DID billing for MOR Resellers
You set the wholesale Reseller Rate. Your Reseller sets the retail Owner Rate. MOR bills both on the same answered inbound call, so inbound DID through the channel keeps a margin for both of you. If...
View Article2026 August Development Update
The main MOR change is DID billing for Resellers. You can sell inbound DID through Resellers and keep a wholesale margin: you set what the Reseller pays; they set what their user pays. Until now,...
View Article2026 July Development Update
MOR: Finances report for resellers and partners, Difference column and sorting on Finances, Reseller PhoneBook, missed-call email, Diversion header storage and localization, Integrity Check warning...
View Article2026 June Development Update
MOR: 2FA improvements, DID and reseller workflows, call-end webhooks, device and PJSIP settings, announcements, call forward, API fixes, Google Maps, alert logic. M4: 2FA improvements, Rate...
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