BACK

P-Series PBX Update (Aug 2025): Outbound Bulk Messaging, Group Reply for Queues, Call Compliance & More

  • August 5, 2025
6.8 min read

P-Series_New_Update

In customer-facing communications, every missed message, delayed reply, or non-compliant call campaign can cost you business.  The latest P-Series PBX update addresses these challenges by improving how teams handle calls, collaborate on messages, and launch outbound outreach under compliance.

From Group Chat in Message Queue to Linkus Distinctive Ringtone, we enable faster customer message replies and precise call configuration from the start. With Outbound Message Campaign, you can launch bulk announcements via SMS and WhatsApp Template directly from your PBX. Plus, new controls to block DNC (Do not Call) numbers and manage Attempt Controls provide stronger protection for your outbound call campaigns.

More than these new features, this update brings your PBX closer to a fully unified contact center and UCaaS experience. To get a quick overview, check out our feature roundup video below！

Jump to ↓

Experience the new updates firsthand, start using them in the PBX now!

*Special Note: To explore Outbound Call Center Compliance, please apply for the P-Series Software Edition (PSE) free trial. For all other advanced features, we recommend applying for the P-Series Cloud Edition (PCE) free trial.

Group Chat in Message Queue

Managing inbound customer messages through Message Queues often means juggling high volumes with limited staff. Delays, missed replies, or inconsistent messaging, especially when only one agent sees the message at a time. That’s where the new Group Chat in Message Queue steps in.

With this feature, all assigned queue agents can view, track, and respond to customer messages in real time—as a team. When issues become complex, teamwork leads to faster resolution. And because everyone sees the same thread, agents can support each other, provide coaching, or step in when needed—enhancing both response quality and team accountability.

But here’s the best part: while your internal team collaborates behind the scenes, the customer only sees one unified reply channel, complete with consistent queue name and avatar. To the customer, it feels like a seamless 1:1 conversation.

Group Chat in Message Queue

To support different service strategies, the group chat supports three flexible chat assignment modes:

  • Default Pickup: The first agent to reply is automatically assigned to the conversation, helping avoid duplicate responses and ensuring customers get a quicker, more seamless first reply.
  • Manual Pickup: All agents can review the message before deciding whether to take it—ideal for more deliberate routing or avoiding message snatching.
  • Disable Pickup: No one “claims” the message—any agent can reply anytime. This is ideal for shared knowledge responses, coaching, or complex queries that benefit from teamwork.

Each message thread shows a complete conversation history to all agents before it’s picked and assigned to a dedicated agent, so nothing is lost and transitions between agents remain smooth. The result? Faster, more consistent replies, higher customer satisfaction.

*Learn how to enable and configure Group Chat in Message Queue in our setup guide.

Outbound Bulk Messaging

Customer engagement isn’t just about replying—it’s about reaching out at the right moment. With this update, P-Series PBX becomes a true communication and marketing engine, supporting bulk Message campaigns via SMS, WhatsApp Template and open APIs—perfect for alerts, promotions, and timely customer updates.

With the newly supported message campaign feature, your team can:

  • Reach hundreds of customers at once with personalized messages through SMS or Whatsapp Template, whether you’re replying to inquiries or running a proactive campaign.
  • Craft rich content using text, emojis, images, files, and more to suit various use cases—from service notifications to promotional offers.
  • Send immediately or schedule messages in advance to match your campaign strategy and boost response rates.
  • Choose how messages are stored: create individual chat threads for personalized interactions, or keep everything within the campaign view to save PBX storage.
  • Track performance in real time, including delivery status, failure rates, and customer responses—all from the central dashboard.

From message composition to analytics, everything happens right inside your PBX—centralized, efficient, and easy to manage.

Message campaigns

WhatsApp Template Message

WhatsApp Template Messaging extends the power of campaigns even further—breaking free from the 24-hour reply window and giving your team the tools to start conversations or reply instantly with consistent, approved content.

Whether you’re sending a campaign to multiple contacts or replying during an ongoing chat, templates help ensure speed, compliance, and message consistency, all without switching platforms. Watch the demo to see how it works.

There are two key use cases of this feature:

  • Outbound Message Campaigns: Start new WhatsApp conversations by sending pre-approved template messages to multiple contacts at once—ideal for reminders, alerts, and marketing offers.
  • In-Conversation Messaging: Use templates within ongoing chats to reply faster and ensure message accuracy, especially for repetitive or regulated communications.

Three Template Types to Fit Any Message

WhatsApp templates fall into three types, each designed to serve a specific purpose:

  • Utility: For sending appointment reminders, order confirmations, shipping updates, or payment notifications.
  • Authentication: For sending one-time passwords (OTPs), login verifications, or secure authentication prompts.
  • Marketing: For promotional offers, new product announcements, event invitations, and other customer engagement initiatives.

*Templates are created and approved within WhatsApp, and will automatically sync to the PBX for use.

Easy to Create, Easy to Send

Each template can include:

  • Plain text or rich text
  • Images, videos, documents or locations
  • Interactive buttons
  • Dynamic placeholders (e.g., {{1}}, {{2}}) to personalize each message

Markeing discount template

Just pick a template, fill in the variables, and send it out in bulk—or use it in a live conversation. No platform switching. No manual copy-pasting. Just consistent, scalable messaging across your whole team.

*Learn how to enable WhatsApp Template Messaging and start sending at scale—step-by-step in the configuration guide.

SMS Bulk Messaging

From appointment reminders to promotional offers, you can now launch bulk SMS campaigns directly from your PBX, no approvals, no formatting constraints.

With SMS, your team can send fully customized outbound messages—including text, emojis, and file attachments—to hundreds of contacts in just a few clicks.

Just like WhatsApp message campaigns, SMS messages can be sent instantly or scheduled ahead, with delivery and response metrics tracked in real time. You can also choose whether to create individual conversation threads or consolidate replies under a single campaign activity for easier tracking.

Whether you’re using WhatsApp or SMS, the Message Campaign feature gives your team a centralized, flexible, and efficient way to engage proactively—without the manual work of sending messages one by one.

*See how to enable and configure SMS Bulk Messaging in the setup guide.

Enhanced Outbound Call Compliance

To help meet compliance requirements and reduce customer disturbance during outbound campaigns, we’ve introduced two powerful controls: DNC (Do Not Call) List and max Attempt Controls to our outbound call center solution. Identify and block DNC-listed contacts by name or number.

Do Not Call (DNC) List

Some customers or regions legally prohibit marketing calls to specific numbers. With DNC Lists, your outbound campaigns can automatically block calls to these restricted contacts.

Here’s how it works:

  • Centralized Management: Admins can maintain DNC lists by manually adding numbers (import & export), linking phonebooks, or syncing with third-party sources.
  • Campaign-Level Control: When a campaign uses a DNC list, the dialer automatically checks each number. If a contact matches the DNC list, it won’t be called.
  • Agent-Level Action: Agents with permission can also mark numbers as DNC during calls for real-time list updates.
  • Call History Tracking: All blocked attempts are logged for visibility and audit.

Do Not Call (DNC) List

This ensures high compliance, avoids potential violations, and respects recipients who opt out of marketing calls.

*See how to configure DNC Lists for compliant outbound dialing in the setup guide.

Attempt Controls

To further reduce disturbance, you can now limit how frequently your campaigns call the same number within a set time frame—e.g., once per day or once every 3 days.

Here’s how it works:

  • Import or Link Contacts: Connect your phonebook or contact list to the campaign.
  • Set Call Frequency Rules: Define the max number of calls allowed within a specific period.
  • Automatic Enforcement: The dialer checks the rule before each call attempt and skips contacts that exceed the limit.
  • View Attempt Logs: All restricted attempts are recorded and visible in call logs.

Attempt Controls

This keeps outreach controlled and considerate, while giving you the flexibility to align with local regulations or your own best practices.

*Check the setup guide to enable and customize Attempt Controls for your campaigns.

Linkus Distinctive Ringtone

In a busy office, using the same default ringtone for every call makes it hard to tell who’s calling. With Linkus Distinctive Ringtone, you can now assign different ringtones based on the caller or call source—so you instantly know whether it’s a customer, a VIP, a queue call, etc.

Distinctive Ringtone Setting

You can customize ringtones by contact, internal or external calls, and inbound routes like IVRs, ring groups, or queues. The feature works across all three Linkus UC clients -desktop, web, and mobile- and supports both 10+ built-in ringtones and custom voice prompt uploads.

This makes it easier to identify important calls, stay focused, and improve response during peak call hours.

*See how to configure Distinctive Ringtones on all Linkus platforms in the setup guide (Linkus Mobile Client, Linkus Desktop Client, Linkus Web Client).

More Optimizations

  • Administrators can now configure separate passwords for extension login and registration, with enforced password strength rules to enhance security.
  • Supports Webhooks for real-time event delivery, enabling seamless integration with third-party systems and automation tools.
  • Trunk SMS now supports Skyetel and Athena, expanding your ITSP options.
  • Linkus UC Client is compatible with Android 15 for a smoother experience.

For more details about this P-Series update, visit the release notes here: Cloud Edition | Appliance Edition | Software Edition

Keep Up with the Latest P-Series Updated Features:

Get Started with the Lasted P-Series PBX

  • Upgrade your P-Series firmware through the management portal to explore the latest features today.
  • If you’re new to the P-Series, take advantage of our 30-day free trial to discover its robust features.

New call-to-action

Leave a Reply

Your email address will not be published. Required fields are marked *