Retrieve SIP call logs for a phone number with cursor-based pagination.
call_id of the last call from the previous page to fetch the next page.call_id (string) — Unique SIP Call-IDdirection (string) — "inbound" or "outbound"from (string) — Caller numberto (string) — Callee numberstatus (string) — Final SIP status (e.g., "200 OK", "486 Busy")sip_code (number) — SIP response codeduration_seconds (number) — Call durationstarted_at (string) — ISO 8601 timestampended_at (string) — ISO 8601 timestampsource_ip (string) — Source IP address